Avaya 8600 Engineering page 31

Step 5 Configure a Prefix List with the default route
config ip prefix-list "Default_Prefix"
add-prefix 0.0.0.0/0
Step 6 Configure a Route Policy to distribute for default route distribution
config ip route-policy "Default_Route" seq
1 create
config ip route-policy "Default_Route" seq
1 enable
config ip route-policy "Default_Route" seq
1 action permit
config ip route-policy "Default_Route" seq
1 set-injectlist "Default_Prefix"
config ip route-policy "Default_Route" seq
1 set-metric 100
config ip route-policy "Default_Route" seq
1 set-metric-type type2
Step 7 Configure OSPF Route Distribution
config ip ospf redistribute bgp create
config ip ospf redistribute bgp metric 1
config ip ospf redistribute bgp route-
policy "Default_Route"
config ip ospf redistribute bgp enable

Please refer to the „Configure BGP Services‟ manual on how to distribute OSPF routes to BGP.
Viewing AS_External LSA's
An ASBR will advertise, such as RIP routes from the example above, as AS_external LSA‟s (LSA Type
5). AS_external LSA‟s can viewed by using the following command:
ERS-8610:6# show ip ospf ase
================================================================================
================================================================================
LSTYPE LINKSTATEID
--------------------------------------------------------------------------------
AsExternal 0.0.0.0
AsExternal 15.15.15.0
AsExternal 172.2.2.0
You can also use the „show ip ospf lsdb‟ command to view all the LSA‟s including AS_External LSA‟s.
November 2010
Ospf AsExternal Lsas
ADV_ROUTER E_METRIC
1.1.1.1 1 100
1.1.1.2 1 2
1.1.1.3 0 10
ERS 8600 / 8800 OSPF Technical Configuration Guide
This commands add a Prefix List with the default route
which will be used in Step 6.
These commands create a Route Policy named „Default-
Route" and adds the Prefix List created in Step 5. Notice
the external metric is set for Type 2.
These command enable BGP route importation into
OSPF, but, distribute only a Default Route.
ASE_FWD_ADDR AGE
0.0.0.0 276
10.1.1.18 262
0.0.0.0 236
avaya.com
SEQ_NBR CSUM
0x8000015c 0x2fdc
0x800000ed 0xaa28
0x800000be 0x769d
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