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Re: RFC2547 VPN discussion group? (With an inter-AS VPN question )

  • From: Franklin Lian
  • Date: Tue May 22 09:26:17 2001

Hello, Yu Ning

Clear ip bgp is fine with me, I used it quite often.  It works
well on both global table or address family.  The format I use
is "clear ip bgp x.x.x.x vrf xxx", or clear the whole iBGP peer.

rgds

Yu Ning wrote:
> 
> 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: [email protected] [mailto:[email protected]]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
> > ____________________________________________
> >
> >