Re: VRF - Problem

He may be testing the RR feature for the VPNv4.......RR is very handy
in MPLS core.......suppose i have 50 PE routers in the SP so each of
my PE router need BGP connectivity with the other 49......with RR each
router only establishes connectivity with the RR.... ideally u should
have at least 2 RRs in a live network....

On Sun, Jan 17, 2010 at 5:09 PM, Jack Router <pan.router_at_gmail.com> wrote:
> I am not en expert but can you explain your design ?
>
> Is this MPLS network ?
>
> What IGP you run between P and PE routers?
>
> Why do you run VPNv4 on R3 (P router)? I think that normally you run vpnv4
> only between edge routers (PEs) and leave the core unaware of client
> networks.
>
> Configuration:
>
> Under R1 there is "neighbor internal remote-as 3" while R3 and R4 are
> configured with "remote-as 1" command.
>
> On R2 there is no neighbor under vpnv4 family.
>
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> CCIE-Newbie
> Sent: 17-Jan-10 01:57
> To: Cisco certification
> Subject: VRF - Problem
>
> Hi experts,
>
> I'm having a strange problem with a vrf configuration.
> Maybe this seems to very simple but it doesn't work.
> First of all here is the topology:
>
> R1 (CE) --- R2 (PE) ----R3 (P-Router) Router ----R4 (PE)-----R5 (CE)
>
> Between R1 an R2 are running ospf. On R2 there is a vrf:
> ip vrf TEST
> rd 10:10
> route-target export 10:10
> route-target import 10:10
>
> The Interface which point to R1 have
> ip vrf forwarding TEST
>
> Also I saw the routes from R1 on R2 with "show ip route vrf TEST !!
> Then I have also a M-BGP Session between R2-R3-R4 with R3 as
> route-reflector and R2/R4:
>
> R2
> router bgp 1
> no synchronization
> bgp router-id 2.2.2.2
> bgp log-neighbor-changes
> network 2.2.2.2 mask 255.255.255.255
> neighbor internal peer-group
> neighbor internal remote-as 3
> neighbor internal update-source Loopback0
> neighbor 3.3.3.3 peer-group internal
> network 2.2.2.2 mask 255.255.255.255
> no auto-summary
> !
> address-family vpnv4
> neighbor internal send-community extended
> exit-address-family
> !
> address-family ipv4 vrf TEST
> redistribute ospf 101 vrf TEST match internal external 1 external 2
> no synchronization
> exit-address-family
>
> R3 (P Router)
> router bgp 1
> no synchronization
> bgp router-id 3.3.3.3
> bgp log-neighbor-changes
> neighbor internal peer-group
> neighbor internal remote-as 1
> neighbor internal update-source Loopback0
> neighbor internal route-reflector-client
> neighbor internal next-hop-self
> neighbor 2.2.2.2 peer-group internal
> neighbor 4.4.4.4 peer-group internal
> no auto-summary
> !
> address-family vpnv4
> neighbor internal send-community extended
> neighbor internal route-reflector-client
> neighbor internal next-hop-self
> neighbor 2.2.2.2 activate
> neighbor 4.4.4.4 activate
> exit-address-family
>
> R4 (PE- Router)
> router bgp 1
> no synchronization
> bgp router-id 4.4.4.4
> bgp log-neighbor-changes
> neighbor internal peer-group
> neighbor internal remote-as 1
> neighbor internal update-source Loopback0
> neighbor 3.3.3.3 peer-group internal
> no auto-summary
> !
> address-family vpnv4
> neighbor internal send-community extended
> neighbor 3.3.3.3 activate
> exit-address-family
> !
> address-family ipv4 vrf TEST
> redistribute ospf 101 vrf TEST match internal external 1 external 2
> no synchronization
> exit-address-family
>
> The bgp sessions are working...because I can see the network from R2 on
> R4 !
> Maybe there is a misconfiguration in the P-Router with the VPNv4 address
> family.
> When I configure peering between both PE-Routers all works fine...and I
> can see als the vrf TEST routes on both sides ...
>
> Please can anyone help me ?
>
> Thanks
>
> Dennis
>
>
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Received on Sun Jan 17 2010 - 17:17:22 ART