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    <title>IPv4 Default Network Configuration </title>
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<a name="wp1073413"> </a><h1 class="pTitle">
IPv4 Default Network Configuration

</h1>
<a name="wp1073414"> </a><p class="pBody">
If you assign the IPv4 default network address, the switch considers routes to that network as the last 
resort. If the IPv4 default network address is not available, the switch uses the IPv4 default gateway 
address. For every network configured with the IPv4 default network address, the switch flags that route 
as a candidate default route, if the route is available. 

</p>
<a name="wp1073415"> </a><p class="pBodyAutonumRel">
<strong>Tip	&nbsp;&nbsp;&nbsp;</strong> If you configure the static route IP forwarding and the default network details, these IPv4 addresses will 
be used regardless of the default gateway being enabled or disabled. If these IPv4 addresses are 
configured and not available, the switch will fall back to using the default gateway IPv4 address, if you 
have configured it. Be sure to configure IPv4 addresses for all entries in the switch if you are using IPv4.

</p>
<a name="wp1073417"> </a><p class="pBody">
When the Ethernet interface is configured, the switch should point to the gateway router for the IP 
network. The host accesses the gateway using a gateway switch. This gateway switch is configured as 
the default gateway. The other switches in the fabric that are connected to the same VSAN as the gateway 
switch can also be connected through the gateway switch. Every interface connected to this VSAN 
should be configured with the VSAN IPv4 address of the gateway switch. 

</p>
<a name="wp1073432"> </a><p class="pBody">
When forwarding is disabled (default), IP frames are not sent from one interface to another. In these 
cases, the software performs local IP routing between two switches using the in-band option for Fibre 
Channel traffic and the mgmt0 option for Ethernet traffic.

</p>
<a name="wp1073434"> </a><p class="pBody">
When a VSAN is created, a VSAN interface is not created automatically. You need to specifically create 
the interface.

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

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