alert(2),
critical(3),
error(4),
warning(5),
notice(6),
information(7),
debug(8)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The priority level of this event as defined by the
vendor. These are ordered from most serious (emergency)
to least serious (debug)."
::= { docsDevEventEntry 5 }
--
-- Vendors will provide their own enumerations for the following.
-- The interpretation of the enumeration is unambiguous for a
-- particular value of the vendor's enterprise number in sysObjectID.
--
docsDevEvId OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"For this product, uniquely identifies the type of event
that is reported by this entry."
::= { docsDevEventEntry 6 }
docsDevEvText OBJECT-TYPE
SYNTAX SnmpAdminString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Provides a human-readable description of the event,
including all relevant context (interface numbers,
etc.)."
::= { docsDevEventEntry 7 }
docsDevFilter OBJECT IDENTIFIER ::= { docsDevMIBObjects 6 }
--
-- Link Level Control Filtering
--
-- docsDevFilterLLCDefault renamed to docsDevFilterLLCUnmatchedAction
docsDevFilterLLCUnmatchedAction OBJECT-TYPE
SYNTAX INTEGER {
discard(1),
accept(2)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"LLC (Link Level Control) filters can be defined on an
inclusive or exclusive basis: CMs can be configured to
forward only packets matching a set of layer three
protocols, or to drop packets matching a set of layer
three protocols. Typical use of these filters is to
filter out possibly harmful (given the context of a large
metropolitan LAN) protocols.
If set to discard(1), any L2 packet which does not match at
least one filter in the docsDevFilterLLCTable will be
discarded. If set to accept(2), any L2 packet which does not
match at least one filter in the docsDevFilterLLCTable
will be accepted for further processing (e.g., bridging).
At initial system startup, this object returns accept(2)."
::= { docsDevFilter 1 }
docsDevFilterLLCTable OBJECT-TYPE
SYNTAX SEQUENCE OF DocsDevFilterLLCEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A list of filters to apply to (bridged) LLC
traffic. The filters in this table are applied to
incoming traffic on the appropriate interface(s) prior
to any further processing (e.g. before handing the packet
off for level 3 processing, or for bridging). The
specific action taken when no filter is matched is
controlled by docsDevFilterLLCUnmatchedAction."
::= { docsDevFilter 2 }
docsDevFilterLLCEntry OBJECT-TYPE
SYNTAX DocsDevFilterLLCEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Describes a single filter to apply to (bridged) LLC traffic
received on a specified interface. "
INDEX { docsDevFilterLLCIndex }
::= { docsDevFilterLLCTable 1 }
DocsDevFilterLLCEntry ::= SEQUENCE {
docsDevFilterLLCIndex Integer32,
docsDevFilterLLCStatus RowStatus,
docsDevFilterLLCIfIndex InterfaceIndexOrZero,
docsDevFilterLLCProtocolType INTEGER,
docsDevFilterLLCProtocol Integer32,
docsDevFilterLLCMatches Counter32
}
docsDevFilterLLCIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Index used for the identification of filters (note that LLC
filter order is irrelevant)."
::= { docsDevFilterLLCEntry 1 }
docsDevFilterLLCStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Controls and reflects the status of rows in this
table. There is no restriction on changing any of the
associated columns for this row while this object is set
to active."
::= { docsDevFilterLLCEntry 2}
docsDevFilterLLCIfIndex OBJECT-TYPE
SYNTAX InterfaceIndexOrZero
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The entry interface to which this filter applies.
The value corresponds to ifIndex for either a CATV MAC
or another network interface. If the value is zero, the
filter applies to all interfaces. In Cable Modems, the
default value is the customer side interface. In Cable
Modem Termination Systems, this object has to be
specified to create a row in this table."
::= { docsDevFilterLLCEntry 3 }
docsDevFilterLLCProtocolType OBJECT-TYPE
SYNTAX INTEGER {
ethertype(1),
dsap(2)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The format of the value in docsDevFilterLLCProtocol:
either a two-byte Ethernet Ethertype, or a one-byte
802.2 SAP value. EtherType(1) also applies to SNAP-
encapsulated frames."
DEFVAL { ethertype }
::= { docsDevFilterLLCEntry 4 }
docsDevFilterLLCProtocol OBJECT-TYPE
SYNTAX Integer32 (0..65535)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The layer three protocol for which this filter applies.
The protocol value format depends on
docsDevFilterLLCProtocolType. Note that for SNAP frames,
etherType filtering is performed rather than DSAP=0xAA."
DEFVAL { 0 }
::= { docsDevFilterLLCEntry 5 }
docsDevFilterLLCMatches OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Counts the number of times this filter was matched."
::= { docsDevFilterLLCEntry 6 }
-- The default behavior for (bridged) packets that do not match IP
-- filters is defined by
-- docsDevFilterIpDefault.
docsDevFilterIpDefault OBJECT-TYPE
SYNTAX INTEGER {
discard(1),
accept(2)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"If set to discard(1), all packets not matching an IP filter
will be discarded. If set to accept(2), all packets not
matching an IP filter will be accepted for further
processing (e.g., bridging).
At initial system startup, this object returns accept(2)."
::= { docsDevFilter 3 }
docsDevFilterIpTable OBJECT-TYPE
SYNTAX SEQUENCE OF DocsDevFilterIpEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An ordered list of filters or classifiers to apply to
IP traffic. Filter application is ordered by the filter
index, rather than by a best match algorithm (Note that
this implies that the filter table may have gaps in the
index values). Packets which match no filters will have
policy 0 in the docsDevFilterPolicyTable applied to them if
it exists. Otherwise, Packets which match no filters
are discarded or forwarded according to the setting of
docsDevFilterIpDefault.
Any IP packet can theoretically match multiple rows of
this table. When considering a packet, the table is
scanned in row index order (e.g. filter 10 is checked
before filter 20). If the packet matches that filter
(which means that it matches ALL criteria for that row),
actions appropriate to docsDevFilterIpControl and
docsDevFilterPolicyId are taken. If the packet was
discarded processing is complete. If
docsDevFilterIpContinue is set to true, the filter
comparison continues with the next row in the table
looking for additional matches.
If the packet matches no filter in the table, the packet
is accepted or dropped for further processing based on
the setting of docsDevFilterIpDefault. If the packet is
accepted, the actions specified by policy group 0
(e.g. the rows in docsDevFilterPolicyTable which have a
value of 0 for docsDevFilterPolicyId) are taken if that
policy group exists.
Logically, this table is consulted twice during the
processing of any IP packet - once upon its acceptance
from the L2 entity, and once upon its transmission to the
L2 entity. In actuality, for cable modems, IP filtering
is generally the only IP processing done for transit
traffic. This means that inbound and outbound filtering
can generally be done at the same time with one pass
through the filter table."
::= { docsDevFilter 4 }
docsDevFilterIpEntry OBJECT-TYPE
SYNTAX DocsDevFilterIpEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Describes a filter to apply to IP traffic received on a
specified interface. All identity objects in this table
(e.g. source and destination address/mask, protocol,
source/dest port, TOS/mask, interface and direction) must
match their respective fields in the packet for any given
filter to match.
To create an entry in this table, docsDevFilterIpIfIndex
must be specified."
INDEX { docsDevFilterIpIndex }
::= { docsDevFilterIpTable 1 }
DocsDevFilterIpEntry ::= SEQUENCE {
docsDevFilterIpIndex Integer32,
docsDevFilterIpStatus RowStatus,
docsDevFilterIpControl INTEGER,
docsDevFilterIpIfIndex InterfaceIndexOrZero,
docsDevFilterIpDirection INTEGER,
docsDevFilterIpBroadcast TruthValue,
docsDevFilterIpSaddr IpAddress,
docsDevFilterIpSmask IpAddress,
docsDevFilterIpDaddr IpAddress,
docsDevFilterIpDmask IpAddress,
docsDevFilterIpProtocol Integer32,
docsDevFilterIpSourcePortLow Integer32,
docsDevFilterIpSourcePortHigh Integer32,
docsDevFilterIpDestPortLow Integer32,
docsDevFilterIpDestPortHigh Integer32,
docsDevFilterIpMatches Counter32,
docsDevFilterIpTos OCTET STRING,
docsDevFilterIpTosMask OCTET STRING,
docsDevFilterIpContinue TruthValue,
docsDevFilterIpPolicyId Integer32
}
docsDevFilterIpIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Index used to order the application of filters.
The filter with the lowest index is always applied
first."
::= { docsDevFilterIpEntry 1 }
docsDevFilterIpStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Controls and reflects the status of rows in this
table. Specifying only this object (with the appropriate
index) on a CM is sufficient to create a filter row which
matches all inbound packets on the ethernet interface,
and results in the packets being
discarded. docsDevFilterIpIfIndex (at least) must be
specified on a CMTS to create a row. Creation of the
rows may be done via either create-and-wait or
create-and-go, but the filter is not applied until this
object is set to (or changes to) active. There is no
restriction in changing any object in a row while this
object is set to active."
::= { docsDevFilterIpEntry 2 }
docsDevFilterIpControl OBJECT-TYPE
SYNTAX INTEGER {
discard(1),
accept(2),
policy(3)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"If set to discard(1), all packets matching this filter
will be discarded and scanning of the remainder of the
filter list will be aborted. If set to accept(2), all
packets matching this filter will be accepted for further
processing (e.g., bridging). If docsDevFilterIpContinue
is set to true, see if there are other matches, otherwise
done. If set to policy (3), execute the policy entries
matched by docsDevIpFilterPolicyId in
docsDevIpFilterPolicyTable.
If is docsDevFilterIpContinue is set to true, continue
scanning the table for other matches, otherwise done."
DEFVAL { discard }
::= { docsDevFilterIpEntry 3 }
docsDevFilterIpIfIndex OBJECT-TYPE
SYNTAX InterfaceIndexOrZero
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The entry interface to which this filter applies. The
value corresponds to ifIndex for either a CATV MAC or
another network interface. If the value is zero, the
filter applies to all interfaces. Default value in Cable
Modems is the index of the customer-side (e.g. ethernet)
interface. In Cable Modem Termination Systems, this
object MUST be specified to create a row in this table."
::= { docsDevFilterIpEntry 4 }
docsDevFilterIpDirection OBJECT-TYPE
SYNTAX INTEGER {
inbound(1),
outbound(2),
both(3)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Determines whether the filter is applied to inbound(1)
traffic, outbound(2) traffic, or traffic in both(3)
directions."
DEFVAL { inbound }
::= { docsDevFilterIpEntry 5 }
docsDevFilterIpBroadcast OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"If set to true(1), the filter only applies to multicast
and broadcast traffic. If set to false(2), the filter
applies to all traffic."
DEFVAL { false }
::= { docsDevFilterIpEntry 6 }
docsDevFilterIpSaddr OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The source IP address, or portion thereof, that is to be
matched for this filter. The source address is first
masked (and'ed) against docsDevFilterIpSmask before being
compared to this value. A value of 0 for this object
and 0 for the mask matches all IP addresses."
DEFVAL { '00000000'h }
::= { docsDevFilterIpEntry 7 }
docsDevFilterIpSmask OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"A bit mask that is to be applied to the source address
prior to matching. This mask is not necessarily the same
as a subnet mask, but 1's bits must be leftmost and
contiguous."
DEFVAL { '00000000'h }
::= { docsDevFilterIpEntry 8 }
docsDevFilterIpDaddr OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The destination IP address, or portion thereof, that is
to be matched for this filter. The destination address is
first masked (and'ed) against docsDevFilterIpDmask before
being compared to this value. A value of 0 for this
object and 0 for the mask matches all IP addresses."
DEFVAL { '00000000'h }
::= { docsDevFilterIpEntry 9 }
docsDevFilterIpDmask OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"A bit mask that is to be applied to the destination
address prior to matching. This mask is not necessarily
the same as a subnet mask, but 1's bits must be leftmost
and contiguous."
DEFVAL { '00000000'h }
::= { docsDevFilterIpEntry 10 }
docsDevFilterIpProtocol OBJECT-TYPE
SYNTAX Integer32 (0..256)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The IP protocol value that is to be matched. For example:
icmp is 1, tcp is 6, udp is 17. A value of 256 matches
ANY protocol."
DEFVAL { 256 }
::= { docsDevFilterIpEntry 11 }
docsDevFilterIpSourcePortLow OBJECT-TYPE
SYNTAX Integer32 (0..65535)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"If docsDevFilterIpProtocol is udp or tcp, this is the
inclusive lower bound of the transport-layer source port
range that is to be matched, otherwise it is ignored
during matching."
DEFVAL { 0 }
::= { docsDevFilterIpEntry 12 }
docsDevFilterIpSourcePortHigh OBJECT-TYPE
SYNTAX Integer32 (0..65535)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"If docsDevFilterIpProtocol is udp or tcp, this is the
inclusive upper bound of the transport-layer source port
range that is to be matched, otherwise it is ignored
during matching."
DEFVAL { 65535 }
::= { docsDevFilterIpEntry 13 }
docsDevFilterIpDestPortLow OBJECT-TYPE
SYNTAX Integer32 (0..65535)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"If docsDevFilterIpProtocol is udp or tcp, this is the
inclusive lower bound of the transport-layer destination
port range that is to be matched, otherwise it is ignored
during matching."
DEFVAL { 0 }
::= { docsDevFilterIpEntry 14 }
docsDevFilterIpDestPortHigh OBJECT-TYPE
SYNTAX Integer32 (0..65535)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"If docsDevFilterIpProtocol is udp or tcp, this is the
inclusive upper bound of the transport-layer destination
port range that is to be matched, otherwise it is ignored
during matching."
DEFVAL { 65535 }
::= { docsDevFilterIpEntry 15 }
docsDevFilterIpMatches OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Counts the number of times this filter was matched.
This object is initialized to 0 at boot, or at row
creation, and is reset only upon reboot."
::= { docsDevFilterIpEntry 16 }
docsDevFilterIpTos OBJECT-TYPE
SYNTAX OCTET STRING ( SIZE (1))
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This is the value to be matched to the packet's
TOS (Type of Service) value (after the TOS value
is AND'd with docsDevFilterIpTosMask). A value for this
object of 0 and a mask of 0 matches all TOS values."
DEFVAL { '00'h }
::= { docsDevFilterIpEntry 17 }
docsDevFilterIpTosMask OBJECT-TYPE
SYNTAX OCTET STRING ( SIZE (1) )
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The mask to be applied to the packet's TOS value before
matching."
DEFVAL { '00'h }
::= { docsDevFilterIpEntry 18 }
docsDevFilterIpContinue OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"If this value is set to true, and docsDevFilterIpControl
is anything but discard (1), continue scanning and
applying policies."
DEFVAL { false }
::= { docsDevFilterIpEntry 19 }
docsDevFilterIpPolicyId OBJECT-TYPE
SYNTAX Integer32 (0..2147483647)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object points to an entry in docsDevFilterPolicyTable.
If docsDevFilterIpControl is set to policy (3), execute
all matching policies in docsDevFilterPolicyTable.
If no matching policy exists, treat as if
docsDevFilterIpControl were set to accept (1).
If this object is set to the value of 0, there is no
matching policy, and docsDevFilterPolicyTable MUST NOT be
consulted."
DEFVAL { 0 }
::= { docsDevFilterIpEntry 20 }
--
--
docsDevFilterPolicyTable OBJECT-TYPE
SYNTAX SEQUENCE OF DocsDevFilterPolicyEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A Table which maps between a policy group ID and a set of
policies to be applied. All rows with the same
docsDevFilterPolicyId are part of the same policy group
and are applied in the order in which they are in this
table.
docsDevFilterPolicyTable exists to allow multiple policy
actions to be applied to any given classified packet. The
policy actions are applied in index order For example:
Index ID Type Action
1 1 TOS 1
9 5 TOS 1
12 1 IPSEC 3
This says that a packet which matches a filter with
policy id 1, first has TOS policy 1 applied (which might
set the TOS bits to enable a higher priority), and next
has the IPSEC policy 3 applied (which may result in the
packet being dumped into a secure VPN to a remote
encryptor).
Policy ID 0 is reserved for default actions and is
applied only to packets which match no filters in
docsDevIpFilterTable."
::= { docsDevFilter 5 }
docsDevFilterPolicyEntry OBJECT-TYPE
SYNTAX DocsDevFilterPolicyEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in the docsDevFilterPolicyTable. Entries are
created by Network Management. To create an entry,
docsDevFilterPolicyId and docsDevFilterPolicyAction
must be specified."
INDEX { docsDevFilterPolicyIndex }
::= { docsDevFilterPolicyTable 1 }
DocsDevFilterPolicyEntry ::= SEQUENCE {
docsDevFilterPolicyIndex Integer32,
docsDevFilterPolicyId Integer32,
-- docsDevFilterPolicyType INTEGER,
-- docsDevFilterPolicyAction Integer32,
docsDevFilterPolicyStatus RowStatus,
docsDevFilterPolicyPtr RowPointer
}
docsDevFilterPolicyIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION "Index value for the table."
::= { docsDevFilterPolicyEntry 1 }
docsDevFilterPolicyId OBJECT-TYPE
SYNTAX Integer32 (0..2147483647)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Policy ID for this entry. A policy ID can apply to
multiple rows of this table, all relevant policies are
executed. Policy 0 (if populated) is applied to all
packets which do not match any of the filters. N.B. If
docsDevFilterIpPolicyId is set to 0, it DOES NOT match
policy 0 of this table. "
::= { docsDevFilterPolicyEntry 2 }
-- docsDevFilterPolicyType ::= { docsDevFilterPolicyEntry 3} Removed
-- docsDevFilterPolicyAction ::= { docsDevFilterPolicyEntry 4 } removed
docsDevFilterPolicyStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Object used to create an entry in this table."
::= { docsDevFilterPolicyEntry 5 }
docsDevFilterPolicyPtr OBJECT-TYPE
SYNTAX RowPointer
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object points to a row in an applicable filter policy
table. Currently, the only standard policy table is
docsDevFilterTosTable. Per the textual convention, this
object points to the first accessible object in the row.
E.g. to point to a row in docsDevFilterTosTable with an
index of 21, the value of this object would be the object
identifier docsDevTosStatus.21.
Vendors must adhere to the same convention when adding
vendor specific policy table extensions.
The default upon row creation is a null pointer which
results in no policy action being taken."
DEFVAL { zeroDotZero }
::= { docsDevFilterPolicyEntry 6 }
--
-- TOS Policy action table
--
docsDevFilterTosTable OBJECT-TYPE
SYNTAX SEQUENCE OF DocsDevFilterTosEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Table used to describe Type of Service (TOS) bits
processing.
This table is an adjunct to the docsDevFilterIpTable, and
the docsDevFilterPolicy table. Entries in the latter
table can point to specific rows in this (and other)
tables and cause specific actions to be taken. This table
permits the manipulation of the value of the Type of
Service bits in the IP header of the matched packet as
follows:
Set the tosBits of the packet to
(tosBits & docsDevFilterTosAndMask) |
docsDevFilterTosOrMask
This construct allows you to do a clear and set of all
the TOS bits in a flexible manner."
::= { docsDevFilter 6 }
docsDevFilterTosEntry OBJECT-TYPE
SYNTAX DocsDevFilterTosEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A TOS policy entry."
INDEX { docsDevFilterTosIndex }
::= { docsDevFilterTosTable 1 }
DocsDevFilterTosEntry ::= SEQUENCE {
docsDevFilterTosIndex Integer32,
docsDevFilterTosStatus RowStatus,
docsDevFilterTosAndMask OCTET STRING (SIZE (1)),
docsDevFilterTosOrMask OCTET STRING (SIZE (1))
}
docsDevFilterTosIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The unique index for this row. There are no ordering
requirements for this table and any valid index may be
specified."
::= { docsDevFilterTosEntry 1 }
docsDevFilterTosStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The object used to create and delete entries in this
table. A row created by specifying just this object
results in a row which specifies no change to the TOS
bits. A row may be created using either the create-and-go
or create-and-wait paradigms. There is no restriction on
the ability to change values in this row while the row is
active."
::= { docsDevFilterTosEntry 2 }
docsDevFilterTosAndMask OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (1))
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This value is bitwise AND'd with the matched packet's
TOS bits."
DEFVAL { 'ff'h }
::= { docsDevFilterTosEntry 3 }
docsDevFilterTosOrMask OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (1))
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"After bitwise AND'ing with the above bits, the packet's
TOS bits are bitwise OR'd with these bits."
DEFVAL { '00'h }
::= { docsDevFilterTosEntry 4 }
--
-- CPE IP Management and anti spoofing group. Only implemented on
-- Cable Modems.
--
docsDevCpe OBJECT IDENTIFIER ::= { docsDevMIBObjects 7}
docsDevCpeEnroll OBJECT-TYPE
SYNTAX INTEGER {
none(1),
any(2)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This object controls the population of docsDevFilterCpeTable.
If set to none, the filters must be set manually.
If set to any, the CM wiretaps the packets originating
from the ethernet and enrolls up to docsDevCpeIpMax
addresses based on the source IP addresses of those
packets. At initial system startup, default value for this
object is any(2)."
::= { docsDevCpe 1 }
docsDevCpeIpMax OBJECT-TYPE
SYNTAX Integer32 (-1..2147483647)
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This object controls the maximum number of CPEs allowed to
connect behind this device. If set to zero, any number of
CPEs may connect up to the maximum permitted for the device.
If set to -1, no filtering is done on CPE source addresses,
and no entries are made in the docsDevFilterCpeTable. If an
attempt is made to set this to a number greater than that
permitted for the device, it is set to that maximum.
At iniitial system startup, default value for this object
is 1."
::= { docsDevCpe 2 }
docsDevCpeTable OBJECT-TYPE
SYNTAX SEQUENCE OF DocsDevCpeEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table lists the IP addresses seen (or permitted) as
source addresses in packets originating from the customer
interface on this device. In addition, this table can be
provisioned with the specific addresses permitted for the
CPEs via the normal row creation mechanisms."
::= { docsDevCpe 3 }
docsDevCpeEntry OBJECT-TYPE
SYNTAX DocsDevCpeEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in the docsDevFilterCpeTable. There is one entry
for each IP CPE seen or provisioned. If docsDevCpeIpMax
is set to -1, this table is ignored, otherwise: Upon receipt
of an IP packet from the customer interface of the CM, the
source IP address is checked against this table. If the
address is in the table, packet processing continues.
If the address is not in the table, but docsDevCpeEnroll
is set to any and the table size is less than
docsDevCpeIpMax, the address is added to the table and
packet processing continues. Otherwise, the packet is
dropped.
The filtering actions specified by this table occur after
any LLC filtering (docsDevFilterLLCTable), but prior
to any IP filtering (docsDevFilterIpTable,
docsDevNmAccessTable)."
INDEX { docsDevCpeIp }
::= {docsDevCpeTable 1 }
DocsDevCpeEntry ::= SEQUENCE {
docsDevCpeIp IpAddress,
docsDevCpeSource INTEGER,
docsDevCpeStatus RowStatus
}
docsDevCpeIp OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The IP address to which this entry applies."
::= { docsDevCpeEntry 1 }
docsDevCpeSource OBJECT-TYPE
SYNTAX INTEGER {
other(1),
manual(2),
learned(3)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object describes how this entry was created. If the
value is manual(2), this row was created by a network
management action (either configuration, or SNMP set).
If set to learned(3), then it was found via
looking at the source IP address of a received packet."
::= { docsDevCpeEntry 2 }
docsDevCpeStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Standard object to manipulate rows. To create a row in this
table, you only need to specify this object. Management
stations SHOULD use the create-and-go mechanism for
creating rows in this table."
::= { docsDevCpeEntry 3 }
--
-- Placeholder for notifications/traps.
--
docsDevNotification OBJECT IDENTIFIER ::= { docsDev 2 }
--
-- Conformance definitions
--
docsDevConformance OBJECT IDENTIFIER ::= { docsDev 3 }
docsDevGroups OBJECT IDENTIFIER ::= { docsDevConformance 1 }
docsDevCompliances OBJECT IDENTIFIER ::= { docsDevConformance 2 }
docsDevBasicCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The compliance statement for MCNS Cable Modems and
Cable Modem Termination Systems."
MODULE -- docsDev
-- conditionally mandatory groups
GROUP docsDevBaseGroup
DESCRIPTION
"Mandatory in Cable Modems, optional in Cable Modem
Termination Systems."
GROUP docsDevEventGroup
DESCRIPTION
"Mandatory in Cable Modems, optional in Cable Modem
Termination Systems."
GROUP docsDevFilterGroup
DESCRIPTION
"Mandatory in Cable Modems, optional in Cable Modem
Termination Systems."
GROUP docsDevNmAccessGroup
DESCRIPTION
"This group is only implemented in devices which do not
implement SNMPv3 User Security Model. It SHOULD NOT be
implemented by SNMPv3 conformant devices.
For devices which do not implement SNMPv3 or later, this
group is Mandatory in Cable Modems and is optional
in Cable Modem Termination Systems."
GROUP docsDevServerGroup
DESCRIPTION
"This group is implemented only in Cable Modems and is
not implemented in Cable Modem Termination Systems."
GROUP docsDevSoftwareGroup
DESCRIPTION
"This group is Mandatory in Cable Modems and optional in
Cable Modem Termination Systems."
GROUP docsDevCpeGroup
DESCRIPTION
"This group is Mandatory in Cable Modems, and is
not implemented in Cable Modem Termination Systems. A
similar capability for CMTS devices may be proposed later
after study."
OBJECT docsDevSTPControl
MIN-ACCESS read-only
DESCRIPTION
"It is compliant to implement this object as read-only.
Devices need only support noStFilterBpdu(2)."
OBJECT docsDevEvReporting
MIN-ACCESS read-only
DESCRIPTION
"It is compliant to implement this object as read-only.
Devices need only support local(0)."
::= { docsDevCompliances 1 }
docsDevBaseGroup OBJECT-GROUP
OBJECTS {
docsDevRole,
docsDevDateTime,
docsDevResetNow,
docsDevSerialNumber,
docsDevSTPControl
}
STATUS current
DESCRIPTION
"A collection of objects providing device status and
control."
::= { docsDevGroups 1 }
docsDevNmAccessGroup OBJECT-GROUP
OBJECTS {
docsDevNmAccessIp,
docsDevNmAccessIpMask,
docsDevNmAccessCommunity,
docsDevNmAccessControl,
docsDevNmAccessInterfaces,
docsDevNmAccessStatus
}
STATUS current
DESCRIPTION
"A collection of objects for controlling access to SNMP
objects."
::= { docsDevGroups 2 }
docsDevSoftwareGroup OBJECT-GROUP
OBJECTS {
docsDevSwServer,
docsDevSwFilename,
docsDevSwAdminStatus,
docsDevSwOperStatus,
docsDevSwCurrentVers
}
STATUS current
DESCRIPTION
"A collection of objects for controlling software
downloads."
::= { docsDevGroups 3 }
docsDevServerGroup OBJECT-GROUP
OBJECTS {
docsDevServerBootState,
docsDevServerDhcp,
docsDevServerTime,
docsDevServerTftp,
docsDevServerConfigFile
}
STATUS current
DESCRIPTION
"A collection of objects providing status about server
provisioning."
::= { docsDevGroups 4 }
docsDevEventGroup OBJECT-GROUP
OBJECTS {
docsDevEvControl,
docsDevEvSyslog,
docsDevEvThrottleAdminStatus,
docsDevEvThrottleInhibited,
docsDevEvThrottleThreshold,
docsDevEvThrottleInterval,
docsDevEvReporting,
docsDevEvFirstTime,
docsDevEvLastTime,
docsDevEvCounts,
docsDevEvLevel,
docsDevEvId,
docsDevEvText
}
STATUS current
DESCRIPTION
"A collection of objects used to control and monitor
events."
::= { docsDevGroups 5 }
docsDevFilterGroup OBJECT-GROUP
OBJECTS {
docsDevFilterLLCUnmatchedAction,
docsDevFilterIpDefault,
docsDevFilterLLCStatus,
docsDevFilterLLCIfIndex,
docsDevFilterLLCProtocolType,
docsDevFilterLLCProtocol,
docsDevFilterLLCMatches,
docsDevFilterIpControl,
docsDevFilterIpIfIndex,
docsDevFilterIpStatus,
docsDevFilterIpDirection,
docsDevFilterIpBroadcast,
docsDevFilterIpSaddr,
docsDevFilterIpSmask,
docsDevFilterIpDaddr,
docsDevFilterIpDmask,
docsDevFilterIpProtocol,
docsDevFilterIpSourcePortLow,
docsDevFilterIpSourcePortHigh,
docsDevFilterIpDestPortLow,
docsDevFilterIpDestPortHigh,
docsDevFilterIpMatches,
docsDevFilterIpTos,
docsDevFilterIpTosMask,
docsDevFilterIpContinue,
docsDevFilterIpPolicyId,
docsDevFilterPolicyId,
docsDevFilterPolicyStatus,
docsDevFilterPolicyPtr,
docsDevFilterTosStatus,
docsDevFilterTosAndMask,
docsDevFilterTosOrMask
}
STATUS current
DESCRIPTION
"A collection of objects to specify filters at link layer
and IP layer."
::= { docsDevGroups 6 }
docsDevCpeGroup OBJECT-GROUP
OBJECTS {
docsDevCpeEnroll,
docsDevCpeIpMax,
docsDevCpeSource,
docsDevCpeStatus
}
STATUS current
DESCRIPTION
"A collection of objects used to control the number
and specific values of IP addresses allowed for
associated Customer Premises Equipment (CPE)."
::= { docsDevGroups 7 }
END
5. Acknowledgments
This document was produced by the IPCDN Working Group. It is based
on a document written by Pam Anderson from CableLabs, Wilson Sawyer
from BayNetworks, and Rich Woundy from Continental Cablevision. The
original working group editor, Guenter Roeck of cisco Systems, did
much of the grunt work of putting the document into its current form.
Special thanks is also due to Azlina Palmer, who helped a lot
reviewing the document.
6. References
[1] Harrington, D., Presuhn, R. and B. Wijnen, "An Architecture for
Describing SNMP Management Frameworks", RFC2571, April 1999.
[2] Rose, M. and K. McCloghrie, "Structure and Identification of
Management Information for TCP/IP-based Internets", STD 16, RFC
1155, May 1990.
[3] Rose, M. and K. McCloghrie, "Concise MIB Definitions", STD 16,
RFC1212, March 1991.
[4] Rose, M., "A Convention for Defining Traps for use with the
SNMP", RFC1215, March 1991.
[5] McCloghrie, K., Perkins, D. and J. Schoenwaelder, "Structure of
Management Information for Version 2 (SMIv2)", STD 58, RFC2578,
April 1999.
[6] McCloghrie, K., Perkins, D. and J. Schoenwaelder, "Textual
Conventions for SMIv2", STD 58, RFC2579, April 1999.
[7] McCloghrie, K., Perkins, D. and J. Schoenwaelder, "Conformance
Statements for SMIv2", STD 58, RFC2580, April 1999.
[8] Case, J., Fedor, M., Schoffstall, M. and J. Davin, "Simple
Network Management Protocol", STD 15, RFC1157, May 1990.
[9] Case, J., McCloghrie, K., Rose, M. and S. Waldbusser,
"Introduction to Community-based SNMPv2", RFC1901, January
1996.
[10] Case, J., McCloghrie, K., Rose, M. and S. Waldbusser, "Transport
Mappings for Version 2 of the Simple Network Management Protocol
(SNMPv2)", RFC1906, January 1996.
[11] Case, J., Harrington D., Presuhn R. and B. Wijnen, "Message
Processing and Dispatching for the Simple Network Management
Protocol (SNMP)", RFC2572, April 1999.
[12] Blumenthal, U. and B. Wijnen, "User-based Security Model (USM)
for version 3 of the Simple Network Management Protocol
(SNMPv3)", RFC2574, April 1999.
[13] Case, J., McCloghrie, K., Rose, M. and S. Waldbusser, "Protocol
Operations for Version 2 of the Simple Network Management
Protocol (SNMPv2)", RFC1905, January 1996.
[14] Levi, D., Meyer, P. and B. Stewart, "SNMP Applications", RFC
2573, April 1999.
[15] Wijnen, B., Presuhn, R. and K. McCloghrie, "View-based Access
Control Model (VACM) for the Simple Network Management Protocol
(SNMP)", RFC2575, April 1999.
[16] "Data-Over-Cable Service Interface Specifications: Cable Modem
Radio Frequency Interface Specification SP-RFI-I04-980724",
DOCSIS, July 1998,
http://www.cablemodem.com/public/pubtechspec/SP-RFI-I04-
980724.pdf.
[17] Steinberg, L., "Techniques for Managing Asynchronously Generated
Alerts", RFC1224, May 1991.
[18] "Data-Over-Cable Service Interface Specifications: Operations
Support System Interface Specification RF Interface SP-OSSI-RF-
I02-980410", DOCSIS, April 1998,
http://www.cablemodem.com/public/pubtechspec/ossi/sp-ossi.PDF.
[19] Bradner, S., "Key words for use in RFCs to Indicate Requirement
Levels", BCP 14, RFC2119, March 1997.
[20] "Data-Over-Cable Service Interface Specifications: Baseline
Privacy Interface Specification SP-BPI-I01-970922", DOCSIS,
September 1977,
http://www.cablemodem.com/public/pubtechspec/ss/SP-BPI-I01-
970922.pdf
7. Security Considerations
This MIB relates to a system which will provide metropolitan public
internet access. As such, improper manipulation of the objects
represented by this MIB may result in denial of service to a large
number of end-users. In addition, manipulation of the
docsDevNmAccessTable, docsDevFilterLLCTable, docsDevFilterIpTable and
the elements of the docsDevCpe group may allow an end-user to
increase their service levels, spoof their IP addresses, change the
permitted management stations, or affect other end-users in either a
positive or negative manner.
There are a number of management objects defined in this MIB that
have a MAX-ACCESS clause of read-write and/or read-create. Such
objects may be considered sensitive or vulnerable in some network
environments. The support for SET operations in a non-secure
environment without proper protection can have a negative effect on
network operations. In addition to those mentioned above:
o The use of docsDevNmAccessTable to specify management stations
is considered to be only limited protection and does not protect
against attacks which spoof the management station's IP address.
The use of stronger mechanisms such as SNMPv3 security should be
considered where possible. Specifically, SNMPv3 VACM and USM
MUST be used with any v3 agent which implements this MIB.
Administrators may also wish to consider whether even read
access to docsDevNmAccessTable may be undesirable under certain
circumstances.
o The CM may have its software changed by the actions of the
management system. An improper software load may result in
substantial vulnerabilities and the loss of the ability of the
management system to control the cable modem.
o The device may be reset by setting docsDevResetNow = true(1).
This causes the device to reload its configuration files as well
as eliminating all previous non-persistent network management
settings. As such, this may provide a vector for attacking the
system.
o Setting docsDevEvThrottleAdminStatus = unconstrained(1) (which
is also the DEFVAL) may cause flooding of traps, which can
disrupt network service.
This MIB does not affect confidentiality of services on a cable modem
system. [20] specifies the implementation of the DOCSIS Baseline
privacy mechanism. The working group expects to issue a MIB for the
management of this mechanism at a later time.
SNMPv1 by itself is not a secure environment. Even if the network
itself is secure (for example by using IPSec), even then, there is no
control as to who on the secure network is allowed to access and
GET/SET (read/change/create/delete) the objects in this MIB.
It is recommended that the implementers consider the security
features as provided by the SNMPv3 framework. Specifically, the use
of the User-based Security Model [12] and the View-based Access
Control Model [15] is recommended.
It is then a customer/user responsibility to ensure that the SNMP
entity giving access to an instance of this MIB, is properly
configured to give access to the objects only to those principals
(users) that have legitimate rights to indeed GET or SET
(change/create/delete) them.
8. Intellectual Property
The IETF takes no position regarding the validity or scope of any
intellectual property or other rights that might be claimed to
pertain to the implementation or use of the technology described in
this document or the extent to which any license under such rights
might or might not be available; neither does it represent that it
has made any effort to identify any such rights. Information on the
IETF's procedures with respect to rights in standards-track and
standards-related documentation can be found in BCP-11. Copies of
claims of rights made available for publication and any assurances of
licenses to be made available, or the result of an attempt made to
obtain a general license or permission for the use of such
proprietary rights by implementors or users of this specification can
be obtained from the IETF Secretariat.
The IETF invites any interested party to bring to its attention any
copyrights, patents or patent applications, or other proprietary
rights which may cover technology that may be required to practice
this standard. Please address the information to the IETF Executive
Director.
9. Author's Address
Michael StJohns
@Home Network
425 Broadway
Redwood City, CA 94063
U.S.A
Phone: +1 650 569 5368
EMail: stjohns@corp.home.net
10. Full Copyright Statement
Copyright (C) The Internet Society (1999). All Rights Reserved.
This document and translations of it may be copied and furnished to
others, and derivative works that comment on or otherwise explain it
or assist in its implementation may be prepared, copied, published
and distributed, in whole or in part, without restriction of any
kind, provided that the above copyright notice and this paragraph are
included on all such copies and derivative works. However, this
document itself may not be modified in any way, such as by removing
the copyright notice or references to the Internet Society or other
Internet organizations, except as needed for the purpose of
developing Internet standards in which case the procedures for
copyrights defined in the Internet Standards process must be
followed, or as required to translate it into languages other than
English.
The limited permissions granted above are perpetual and will not be
revoked by the Internet Society or its successors or assigns.
This document and the information contained herein is provided on an
"AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
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Acknowledgement
Funding for the RFCEditor function is currently provided by the
Internet Society.