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OSPF
Feature Overview
PE-1# show ip cef vrf ospf 10.3.1.7
10.3.1.7/32, version 73, epoch 0, cached adjacency to POS3/0/0 0 packets, 0 bytes
tag information set
local tag:
fast tag rewrite with PO3/0/0, point2point, tags imposed: {42 38} via 10.3.1.2, 0 dependencies, recursive
next hop 10.1.1.17, POS3/0/0 via 10.3.1.2/32 valid cached adjacency
tag rewrite with PO3/0/0, point2point, tags imposed: {42 38}
If a prefix is learned across the
In the following example,
PE-2# show ip route vrf ospf 10.3.1.7
Routing entry for 10.3.1.7/32
Known via "ospf 100", distance 110, metric 12, type intra area
Redistributing via bgp 215
Last update from 10.3.1.2 00:00:10 ago
Routing Descriptor Blocks:
*10.3.1.2
PE-2# show ip bgp vpnv4 all 10.3.1.7
BGP routing table entry for 100:251:10.3.1.7/32, version 166 Paths: (1 available, best #1)
Not advertised to any peer Local
10.3.1.2 (metric 30) from 10.3.1.2 (10.3.1.2)
Origin incomplete, metric 11, localpref 100, valid, internal, best
Extended Community: RT:1:793 OSPF DOMAIN ID:0.0.0.100 OSPF RT:1:2:0 OSPF 2
The PE router uses the information received from
Benefits
Client Site Connection Across the MPLS VPN Backbone
A
Flexible Routing in an MPLS VPN Configuration
In an MPLS VPN configuration, the OSPF cost configured with a
Cisco IOS Release 12.2(8)T
7