Re: MPLS BGP problem

Hi,

I think you need to put default-information originate and redistribute it
under VPNV4 address-family.

Regards,
Vignesh

2009/11/27 Ryder, Keith <Keith.Ryder_at_globalcrossing.com>

> Here you go
>
>
>
> Good router
>
>
>
> r RIB-failure, S Stale
>
> Origin codes: i - IGP, e - EGP, ? - incomplete
>
>
>
> Network
> Next Hop Metric LocPrf Weight
> Path
>
> Route Distinguisher:
> 65000:1009 (default for vrf test)
>
> *>i0.0.0.0
> 192.168.151.117 1 100 0 65495
> i
>
> * i10.238.163.128/26
> 192.168.151.129 2 100 0 65529 i
>
> *>
> 10.238.165.121 2
> 0 65529 i
>
> * i10.238.165.96/27
> 192.168.151.129 0 100 0 65529 i
>
> *>
> 10.238.165.121 0
> 0 65529 i
>
>
>
>
>
>
>
> Bad router
>
>
>
> Origin codes: i - IGP, e - EGP, ? - incomplete
>
>
>
> Network Next Hop Metric LocPrf
> Weight Path
>
> Route Distinguisher: 65000:1009 (default for vrf test)
>
> *> 10.238.163.128/26
>
> 10.238.165.125 2 0 65529 i
>
> * i 192.168.151.128 2 100 0 65529 i
>
> *> 10.238.165.96/27 10.238.165.125 0 0 65529 i
>
> * i 192.168.151.128 0 100 0 65529 i
>
>
>
>
>
> But is the route not being installed due to lack of cef next hop?
>
>
>
> If ip split the default in to two halves 128.0.0..0/1 and 0.0.0.0/1 it
> works OK on both routers.
>
>
>
>
>
> From: Marcin PolaE ski [mailto:mcinus_at_gmail.com]
> Sent: 27 November 2009 12:01
> To: Ryder, Keith
> Subject: Re: MPLS BGP problem
>
>
>
> Keith
>
> Show us sh ip bgp vpnv4 vrf test
> Maybe your 0.0.0.0 doesn't have next hop in routing table
>
> Best
> Marcin
>
>
>
> On Fri, Nov 27, 2009 at 12:14 PM, Ryder, Keith <
> Keith.Ryder_at_globalcrossing.com> wrote:
>
> I have a working MPLS network but when a new VRF is added one router
> refuses to install the default received from an Ebgp peer.
>
>
>
> Below is the simple part if the VRF config
>
>
>
> ip vrf test
>
> rd 60000:1009
>
> route-target export 60000:1009
>
> route-target import 60000:1009
>
>
>
>
>
> router bgp 60000
>
> neighbor etc etc
>
>
>
>
>
>
>
> address-family ipv4 vrf test
>
> neighbor 10.238.165.125 remote-as 60000
>
> neighbor 10.238.165.125 version 4
>
> neighbor 10.238.165.125 activate
>
> neighbor 10.238.165.125 send-community
>
> no auto-summary
>
> no synchronization
>
> exit-address-family
>
>
>
> routes in the vrf look fine
>
>
>
> Show ip route vrf test
>
>
>
>
>
> 1.0.0.0/32 is subnetted, 1 subnets
>
> B 1.1.1.1 [200/0] via 192.168.151.117, 00:30:02
>
> 10.0.0.0/8 is variably subnetted, 3 subnets, 3 masks
>
> B 10.238.165.96/27 [20/0] via 10.238.165.125, 22:39:07
>
> C 10.238.128.0/18 is directly connected, FastEthernet2/5.938
>
> B 10.238.163.128/26 [20/2] via 10.238.165.125, 22:43:23
>
>
>
> But no default route installed.
>
>
>
>
>
> CEF shows
>
> Prefix Next Hop Interface
>
> 0.0.0.0/0 drop Null0 (default route handler
> entry)
>
> 0.0.0.0/32 receive
>
> 1.1.1.1/32 192.168.151.7 SRP1/1
>
> 10.238.128.0/18 attached FastEthernet2/5.938
>
> 10.238.128.0/32 receive
>
> 10.238.163.128/26 10.238.165.125 FastEthernet2/5.938
>
> 10.238.165.96/27 10.238.165.125 FastEthernet2/5.938
>
> 10.238.165.125/32 10.238.165.125 FastEthernet2/5.938
>
>
>
>
>
>
>
> Same config on another router (all connected via an srp ring)
>
> 1.0.0.0/32 is subnetted, 1 subnets
>
> B 1.1.1.1 [200/0] via 192.168.151.117, 00:32:29
>
> 10.0.0.0/8 is variably subnetted, 3 subnets, 3 masks
>
> B 10.238.165.96/27 [20/0] via 10.238.165.121, 5w1d
>
> C 10.238.165.120/30 is directly connected, FastEthernet2/5.937
>
> B 10.238.163.128/26 [20/2] via 10.238.165.121, 5w1d
>
> B* 0.0.0.0/0 [200/1] via 192.168.151.117, 21:10:25
>
>
>
> Default route installed.
>
>
>
> CEF shows
>
>
>
> Prefix Next Hop Interface
>
> 0.0.0.0/0 192.168.151.7 SRP1/1
>
> 0.0.0.0/32 receive
>
> 1.1.1.1/32 192.168.151.7 SRP1/1
>
> 10.238.163.128/26 10.238.165.121 FastEthernet2/5.937
>
> 10.238.165.96/27 10.238.165.121 FastEthernet2/5.937
>
> 10.238.165.120/30 attached FastEthernet2/5.937
>
> 10.238.165.120/32 receive
>
> 10.238.165.121/32 10.238.165.121 FastEthernet2/5.937
>
> 10.238.165.122/32 receive
>
> 10.238.165.123/32 receive
>
> 224.0.0.0/24 receive
>
> 255.255.255.255/32 receive
>
>
>
> I can force a route to be advertised as I have done with 1.1.1.1 using a
> null route.
>
>
>
> Is the default route not being installed due to the cef drop or
> something else?
>
>
>
> Driving me nuts everything works but not a default route.
>
>
>
>
>
>
>
>
>
> FE-----Router 1----SRP 1/1------Router2------FE------Router3(origin of
> 1.1.1.1-------R4(origin of 0.0.0.0)
>
>
>
> Default OK No default
> <<<<0.0.0.0
>
> 1.1.1.1 ok 1.1.1.1 ok
>
>
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Received on Fri Nov 27 2009 - 22:54:24 ART