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    <title>FCIP Links  </title>
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<a name="wp1072994"> </a><h1 class="pTitle">
FCIP Links 

</h1>
<a name="wp1072996"> </a><p class="pBody">
FCIP links consist of one or more TCP connections between two FCIP link endpoints. Each link carries 
encapsulated Fibre Channel frames. 

</p>
<a name="wp1072997"> </a><p class="pBody">
When the FCIP link comes up, the VE ports at both ends of the FCIP link create a virtual Fibre Channel 
(E)ISL and initiate the E port protocol to bring up the (E)ISL.

</p>
<a name="wp1072999"> </a><p class="pBody">
By default, the FCIP feature on any Cisco MDS 9000 Family switch creates two TCP connections for 
each FCIP link:

</p>
<div class="pSmartList1"><ul class="pSmartList1">
<a name="wp1073000"> </a><li class="pSmartList1">One connection is used for data frames.
</li>
<a name="wp1073001"> </a><li class="pSmartList1">The other connection is used only for Fibre Channel control frames, that is, switch-to-switch 
protocol frames (all Class F). This arrangement provides low latency for all control frames.
</li>
</ul></div>
<a name="wp1073002"> </a><p class="pBody">
To enable FCIP on the IPS module or MPS-14/2 module, an FCIP profile and FCIP interface (interface 
FCIP) must be configured.

</p>
<a name="wp1073003"> </a><p class="pBody">
The FCIP link is established between two peers, the VE port initialization behavior is identical to a 
normal E port. This behavior is independent of the link being FCIP or pure Fibre Channel, and is based 
on the E port discovery process (ELP, ESC). 

</p>
<a name="wp1073004"> </a><p class="pBody">
Once the FCIP link is established, the VE port behavior is identical to E port behavior for all inter-switch 
communication (including domain management, zones, and VSANs). At the Fibre Channel layer, all VE 
and E port operations are identical.

</p>
<a name="wp1074268"> </a><p class="pBody">
When two FCIP link endpoints are created, an FCIP link is established between the two IPS modules or 
MPS-14/2 modules. To create an FCIP link, assign a profile to the FCIP interface and configure the peer 
information. The peer IP switch information initiates (creates) an FCIP link to that peer switch. 

</p>
<hr /><br><p class="pBody">Copyright 2010-2013, Cisco Systems, Inc. All rights reserved.</p> 

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