North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical RE: RFC2547 VPN discussion group? (With an inter-AS VPN question )
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 > ____________________________________________ > >
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