7) The FC Entity may require the FCIP Entity to perform TCP close
requests.
8) The FC Entity may recover from connection failures.
9) The FC Entity must recover from events that the FCIP Entity cannot
handle, such as:
a) loss of synchronization with FCIP Frame headers from the
Encapsulated Frame Receiver Portal requiring resetting the TCP
Connection; and
b) recovering from FCIP Frames that are discarded as a result of
synchronization problems (see section 5.6.2.2 and section
5.6.2.3).
10) The FC Entity must work cooperatively with the FCIP Entity to
manage flow control problems in either the IP Network or FC
Fabric.
11) The FC Entity may test for failed TCP Connections.
Note that the Fibre Channel standards must be consulted for a
complete understanding of the requirements placed on an FC
Entity.
Table 2 shows the explicit interactions between the FCIP Entity
and the FC Entity.
+-------------+-----------------+-----------------------------------+
| | | Information/Parameter Passed and |
| | | Direction |
| Reference | +-----------------+-----------------+
| Section | Condition | FCIP Entity---> | <---FC Entity |
+-------------+-----------------+-----------------+-----------------+
| 5.6 | FC Frame ready | | Provide FC |
| FCIP Data | for IP transfer | | Frame and |
| Engine | | | time stamp at |
| | | | FC Frame |
| | | | Receiver Portal |
+-------------+-----------------+-----------------+-----------------+
| WWN = World Wide Name |
+-------------------------------------------------------------------+
| continued |
+-------------------------------------------------------------------+
Table 2: FC/FCIP Entity pair interactions (part 1 of 5)
+-------------+-----------------+-----------------------------------+
| | | Information/Parameter Passed and |
| | | Direction |
| Reference | +-----------------+-----------------+
| Section | Condition | FCIP Entity---> | <---FC Entity |
+-------------+-----------------+-----------------+-----------------+
| continued |
+-------------+-----------------+-----------------+-----------------+
| 5.6 | FCIP Frame | Provide FC | |
| FCIP Data | received from | Frame and | |
| Engine | IP Network | time stamp at | |
| | | FC Frame Trans- | |
| | | mitter Portal | |
+-------------+-----------------+-----------------+-----------------+
| 5.6.2.2 | FCIP_DE | Inform FC | |
| Errors | discards bytes | Entity that | |
| in FCIP | delivered | bytes have been | |
| Headers and | through | discarded with | |
| Discarding | Encapsulated | reason | |
| FCIP Frames | Frame Receiver | | |
| | Portal | | |
+-------------+-----------------+-----------------+-----------------+
| 5.6.2.3 | FCIP Entity | Inform FC | |
| Synchron- | closes TCP | Entity that TCP | |
| ization | Connection due | Connection has | |
| Failures | to synchron- | been closed | |
| | ization failure | with reason | |
| | | for closure | |
+-------------+-----------------+-----------------+-----------------+
| 8.1.2.3 | Receipt of the | Inform FC | |
| Connection | echoed FSF | Entity that TCP | |
| Setup | takes too long | Connection has | |
| Following a | or the FSF | been closed | |
| Successful | contents have | with reason | |
| TCP Connect | changed | for closure | |
| Request | | | |
+-------------+-----------------+-----------------+-----------------+
| WWN = World Wide Name |
+-------------------------------------------------------------------+
| continued |
+-------------------------------------------------------------------+
Table 2: FC/FCIP Entity pair interactions (part 2 of 5)
+-------------+-----------------+-----------------------------------+
| | | Information/Parameter Passed and |
| | | Direction |
| Reference | +-----------------+-----------------+
| Section | Condition | FCIP Entity---> | <---FC Entity |
+-------------+-----------------+-----------------+-----------------+
| continued |
+-------------+-----------------+-----------------+-----------------+
| 8.1.2.1 | New TCP | Inform FC | |
| Non-Dynamic | Connection | Entity of | |
| Creation of | created based | new or existing | |
| a New TCP | on "shared" | FCIP_LEP and | |
| Connections | database | new FCIP_DE | |
| | information | along with | |
| | | Destination FC | |
| | | Fabric Entity | |
| | | WWN, Connection | |
| | | Usage Flags, | |
| | | Connection | |
| | | Usage Code and | |
| | | Connection | |
| | | Nonce | |
+-------------+-----------------+-----------------+-----------------+
| 8.1.2.2 | New TCP | Inform FC | |
| Dynamic | Connection | Entity of | |
| Creation of | created based | new or existing | |
| a New TCP | on SLP service | FCIP_LEP and | |
| Connections | advertisement | new FCIP_DE | |
| | and "shared" | along with | |
| | database | Destination FC | |
| | information | Fabric Entity | |
| | | WWN, Connection | |
| | | Usage Flags, | |
| | | Connection | |
| | | Usage Code and | |
| | | Connection | |
| | | Nonce | |
+-------------+-----------------+-----------------+-----------------+
| WWN = World Wide Name |
+-------------------------------------------------------------------+
| continued |
+-------------------------------------------------------------------+
Table 2: FC/FCIP Entity pair interactions (part 3 of 5)
+-------------+-----------------+-----------------------------------+
| | | Information/Parameter Passed and |
| | | Direction |
| Reference | +-----------------+-----------------+
| Section | Condition | FCIP Entity---> | <---FC Entity |
+-------------+-----------------+-----------------+-----------------+
| continued |
+-------------+-----------------+-----------------+-----------------+
| 8.1.3 | New TCP | Inform FC | |
| Processing | Connection | Entity of | |
| Incoming | created based | new or existing | |
| TCP Connect | on incoming TCP | FCIP_LEP and | |
| Requests | Connect request | new FCIP_DE | |
| | and "shared" | along with | |
| | database | Source FC | |
| | information | Fabric Entity | |
| | | WWN, Source | |
| | | FC/FCIP Entity | |
| | | Identifier, | |
| | | Connection | |
| | | Usage Flags, | |
| | | Connection | |
| | | Usage Code and | |
| | | Connection | |
| | | Nonce | |
+-------------+-----------------+-----------------+-----------------+
| 8.1.3 | TCP Connect | Request FC | Yes or No |
| Processing | Request wants | Entity to | answer about |
| Incoming | to add a new | authenticate | whether the |
| TCP Connect | TCP Connection | the source of | source of the |
| Requests | to an existing | the TCP Connect | TCP Connect |
| | FCIP_LEP | Request | Request can be |
| | | | authenticated |
+-------------+-----------------+-----------------+-----------------+
| 8.1.3 | Receipt of the | Inform FC | |
| Processing | FSF takes too | Entity that TCP | |
| Incoming | long or | Connection has | |
| TCP Connect | duplicate | been closed | |
| Requests | Connection | with reason | |
| | Nonce value | for closure | |
+-------------+-----------------+-----------------+-----------------+
| WWN = World Wide Name |
+-------------------------------------------------------------------+
| continued |
+-------------------------------------------------------------------+
Table 2: FC/FCIP Entity pair interactions (part 4 of 5)
+-------------+-----------------+-----------------------------------+
| | | Information/Parameter Passed and |
| | | Direction |
| Reference | +-----------------+-----------------+
| Section | Condition | FCIP Entity---> | <---FC Entity |
+-------------+-----------------+-----------------+-----------------+
| concluded |
+-------------+-----------------+-----------------+-----------------+
| 8.2 | FC Entity | Acknowledgement | Identification |
| Closing TCP | determines | of TCP | of the FCIP_DE |
| Connections | that a TCP | Connection | whose TCP |
| | Connection | closure | Connection |
| | needs to be | | needs to be |
| | closed | | closed |
+-------------+-----------------+-----------------+-----------------+
| 8.4 | Discovery that | Inform FC | |
| TCP | TCP connectiv- | Entity that TCP | |
| Connection | ity has been | Connection has | |
| Considera- | lost | been closed | |
| tions | | with reason | |
| | | for closure | |
+-------------+-----------------+-----------------+-----------------+
| 9.4.1 | IKE phase 1 | Inform FC | |
| FCIP | failed, result- | Entity that TCP | |
| Link | ing in termin- | Connection can | |
| Initializ- | ation of link | not be opened | |
| ation Steps | initialization | with reason for | |
| | | failure | |
+-------------+-----------------+-----------------+-----------------+
| 9.4.3 | Excessive | Inform FC | |
| Handling | numbers of | Entity that TCP | |
| data | dropped | Connection has | |
| integrity | datagrams | been closed | |
| and confi- | detected and | with reason | |
| dentiality | TCP Connection | for closure | |
| violations | closed | | |
+-------------+-----------------+-----------------+-----------------+
| RFC 3723 | TCP Connection | Inform FC | |
| | closed due to | Entity that TCP | |
| Handling SA | SA parameter | Connection has | |
| parameter | mismatch | been closed | |
| mismatches | problems | with reason | |
| | | for closure | |