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    <title>Information About IPv4 and IPv6 Access Control Lists </title>
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<a name="wp1072727"> </a><h1 class="pTitle">
Information About IPv4 and IPv6 Access Control Lists

</h1>
<a name="wp1072764"> </a><p class="pBody">
Cisco MDS 9000 Family switches can route IP version 4 (IPv4) traffic between Ethernet and Fibre 
Channel interfaces. The IP static routing feature routes traffic between VSANs. To do so, each VSAN 
must be in a different IPv4 subnetwork. Each Cisco MDS 9000 Family switch provides the following 
services for network management systems (NMS):

</p>
<div class="pSmartList1"><ul class="pSmartList1">
<a name="wp1072766"> </a><li class="pSmartList1">IP forwarding on the out-of-band Ethernet interface (mgmt0) on the front panel of the supervisor 
modules.
</li>
<a name="wp1072767"> </a><li class="pSmartList1">IP forwarding on the in-band Fibre Channel interface using the IP over Fibre Channel (IPFC) 
function&#8212;IPFC specifies how IP frames can be transported over Fibre Channel using encapsulation 
techniques. IP frames are encapsulated into Fibre Channel frames so NMS information can cross the 
Fibre Channel network without using an overlay Ethernet network.
</li>
<a name="wp1072768"> </a><li class="pSmartList1">IP routing (default routing and static routing)&#8212;If your configuration does not need an external 
router, you can configure a default route using static routing.
</li>
</ul></div>
<a name="wp1072770"> </a><p class="pBody">
IPv4 Access Control Lists (IPv4-ACLs and IPv6-ACLs) provide basic network security to all switches 
in the Cisco MDS 9000 Family. IPv4-ACLs and IPv6-ACLs restrict IP-related traffic based on the 
configured IP filters. A filter contains the rules to match an IP packet, and if the packet matches, the rule 
also stipulates if the packet should be permitted or denied. 

</p>
<a name="wp1072733"> </a><p class="pBody">
Each switch in the Cisco MDS 9000 Family can have a maximum total of 128 IPv4-ACLs or 128 
IPv6-ACLs and each IPv4-ACL or IPv6-ACL can have a maximum of 256 filters.

</p>
<a name="wp1074641"> </a><p class="pBody">
This section contains the following topics:

</p>
<div class="pSmartList1"><ul class="pSmartList1">
<a name="wp1074642"> </a><li class="pSmartList1"><a href="ipacl03.html">About Filter Contents</a>
</li>
<a name="wp1075074"> </a><li class="pSmartList1"><a href="ipacl04.html">Protocol Information</a>
</li>
<a name="wp1075183"> </a><li class="pSmartList1"><a href="ipacl05.html">Address Information</a>
</li>
<a name="wp1075187"> </a><li class="pSmartList1"><a href="ipacl06.html">Port Information</a>
</li>
<a name="wp1075191"> </a><li class="pSmartList1"><a href="ipacl07.html">ICMP Information</a>
</li>
<a name="wp1075199"> </a><li class="pSmartList1"><a href="ipacl08.html">ToS Information</a>
</li>
</ul></div>
<hr /><br><p class="pBody">Copyright 2010-2013, Cisco Systems, Inc. All rights reserved.</p> 

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