Configuration Guide User guide

1196 FastIron Configuration Guide
53-1002494-02
Other Layer 3 protocols
Enabling learning of default routes
By default, the software does not learn RIP default routes.
To enable learning of default RIP routes, enter commands such as the following.
Brocade(config)#interface ethernet 0/1/1
Brocade(config-if-e1000-1)#ip rip learn-default
Syntax: [no] ip rip learn-default
Changing the route loop prevention method
RIP can use the following methods to prevent routing loops:
• Split horizon – The Brocade device does not advertise a route on the same interface as the one
on which it learned the route.
• Poison reverse – The Brocade device assigns a cost of 16 (“infinite” or “unreachable”) to a
route before advertising it on the same interface as the one on which it learned the route. This
is the default.
NOTE
These methods are in addition to the RIP maximum valid route cost of 15.
To enable split horizon, enter commands such as the following.
Brocade(config)#interface ethernet 0/1/1
Brocade(config-if-e1000-1)#no ip rip poison-reverse
Syntax: [no] ip rip poison-reverse
Other Layer 3 protocols
For information about other IP configuration commands in the Layer 2 with base Layer 3 image that
are not included in this chapter, refer to Chapter 26, “IP Configuration”.
For information about enabling or disabling Layer 3 routing protocols, refer to “Enabling or disabling
routing protocols” on page 1196.
Enabling or disabling routing protocols
This section describes how to enable or disable routing protocols. For complete configuration
information about the routing protocols, refer to “RIP overview” on page 1199.
The full Layer 3 code supports the following protocols:
• BGP4
• DVMRP
• IGMP
• IP
• IP multicast (PIM-SM, PIM-DM)
• OSPF