Configuration Guide User guide

FastIron Configuration Guide 1253
53-1002494-01
Configuring OSPF
NOTE
The Layer 3 Switch advertises the default route into OSPF even if redistribution is not enabled, and
even if the default route is learned through an IBGP neighbor. IBGP routes (including the default
route) are not redistributed into OSPF by OSPF redistribution (for example, by the OSPF redistribute
command).
In Figure 164 on page 1253, an administrator wants to configure the FastIron Layer 3 Switch
acting as the ASBR (Autonomous System Boundary Router) between the RIP domain and the OSPF
domain to redistribute routes between the two domains.
NOTE
The ASBR must be running both RIP and OSPF protocols to support this activity.
To configure for redistribution, define the redistribution tables with deny and permit redistribution
filters. Use the deny redistribute and permit redistribute commands for OSPF at the OSPF router
level.
NOTE
Do not enable redistribution until you have configured the redistribution filters. If you enable
redistribution before you configure the redistribution filters, the filters will not take affect and all
routes will be distributed.
FIGURE 164 Redistributing OSPF and static routes to RIP routes
OSPF Domain
RIP Domain
Switch
Switch
ASBR (Autonomous
System Border
Router)