Hi All,

I noticed a really unusual thing. When multipath is enabled between eBGP and iBGP, the AD of iBGP path also appears as 20 instead of 200. However, if eBGP path is not available and only iBGP path is available, the AD becomes 200.

This seems like a bug. Any ideas?

Here's the sample output- Notice network 10.2.2.0 in the both outputs.

PE1#sh ip route vrf CUST1

Gateway of last resort is not set

172.64.0.0/30 is subnetted, 3 subnets

C 172.64.1.0 is directly connected, Serial0/0

B 172.64.2.0 is directly connected, 00:22:35, Serial0/1

B 172.64.3.0 [200/0] via 2.2.2.2, 00:04:33

10.0.0.0/24 is subnetted, 2 subnets

B 10.2.2.0 [20/0] via 172.64.2.1 (CUST2), 00:22:35

[20/0] via 2.2.2.2, 00:00:27

B 10.1.1.0 [20/0] via 172.64.1.1, 00:22:45

PE1#sh ip bgp vpnv4 all 10.2.2.0

BGP routing table entry for 1:1:10.2.2.0/24, version 24

Paths: (2 available, best #2, table CUST1)

Multipath: eiBGP

Flag: 0x800

Advertised to update-groups:

1

65002, imported path from 2:2:10.2.2.0/24

2.2.2.2 (metric 11) from 2.2.2.2 (2.2.2.2)

Origin IGP, metric 0, localpref 100, valid, internal, multipath

Extended Community: RT:2:2

mpls labels in/out nolabel/20

65002, imported path from 1:2:10.2.2.0/24

172.64.2.1 from 172.64.2.1 (10.2.2.1)

Origin IGP, metric 0, localpref 100, valid, external, multipath, best

Extended Community: RT:1:2

Regards,

Amit.