RFC2547 VPN discussion group? (With an inter-AS VPN question )
Yu Ning
yuning at ns.chinanet.cn.net
Tue May 22 08:39:51 UTC 2001
Hi nanog,
I've solved the problem mentioned in my former letter. I'm too over-worked
and forget to add "next-hop-self" in the PE1 to PE2 MP-iBGP peer, so no
PE can reach PE1 in other AS, unless the directly connected one. But Cisco
MPLS VPN command seems not very friendly,:-) After add the "next-hop-self"
in the VPNV4 section, the MP-iBGP peer won't refresh itself, and I have
no command to clear the VPNV4 peer, then I have to delete the config
and paste it again to trigger the new update. I hope the "clear ip b n
vrf xxx.xxx " can be added into IOS soon,:-)
regards,
> -----Original Message-----
> From: owner-nanog at merit.edu [mailto:owner-nanog at merit.edu]On Behalf Of
> Yu Ning
> Sent: Tuesday, May 22, 2001 10:18 AM
> To: Nanog-Post
> Subject: RFC2547 VPN discussion group? (With an inter-AS VPN question )
>
>
> Hi All,
>
> Does anyone know RFC2547 VPN discussion group ? I can only find
> generic MPLS
> discussion from IETF. Better cisco oriented, because we use Cisco RFC2547
> solution.
>
> Here is one of the problem we encountered now. Can anyone help ?
>
> We have 3 PEs connected with 3 CEs. PE1, PE2 are in the same AS4134, while
> PE3 in AS41340. It's not so luck that PE1 and PE3 is not back-to-back
> connected, but can be reached via a tag-switching enabled intermediate
> network. PE1-PE2 has MP-iBGP peer, while PE1-PE3 has MP-eBGP peer.
>
> Then we verify the traffic, and see that CE3, CE1 can ping each other,
> while CE3 can't ping CE2 ? But all three CEs can see prefix from other
> CEs.
>
>
>
> AS4134 AS41340
>
> |----| |---| |---|
> |CE1 |-------|PE1|--(Tag switching )--|PE3|
> |----| |---| enabled inter- |---|
> | mediate network |
> | |
> | |---|
> | |CE3|
> |----| |---| |---|
> |CE2 |-------|PE2|
> |----| |---|
>
>
> BTW, We run PE on IOS Version 12.1(5)T6
>
>
> regards,
>
> Yu Ning
> ____________________________________________
>
> (Mr.) Yu Ning, Chief Engineer
> ChinaNET(AS4134) Sr. Sup.& New Sev. R&D
> Internet Product Dep. DCB, China Telecom
> Beijing, P.R.China +86-10-62072357/62072354
> ____________________________________________
>
>
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