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vpn question

From: "kevin Young" <kvyoung@21cn.com>
Date: Tue, 21 Nov 2000 18:13:57 +0800
Resent-Date: Tue, 21 Nov 2000 06:45:11 -0500
To: <cisco-nsp@puck.nether.net>, <mpls-ops@mplsrc.com>

hi, group

when i config mpls vpn, r1 and r2 are 3640, as PE; r3 and r4 are 2610, as CE. IOS are 12.1.3T

r3-------------r1--------------r2---------------r4

ether atm ether

r1 could ping r3, and r2 could ping r4, r3 and r4 could see each other routes, but r3 couldn't ping r4

and r1 couldn't ping r4, r2 could not ping r3.

i fould r1 and r2 didn't tag the vpn, this is the show on r1:

r1#sh tag-switching for vrf vpn-lab detail
Local Outgoing    Prefix            Bytes tag Outgoing   Next Hop
tag    tag or VC   or Tunnel Id      switched   interface
16     Untagged    136.5.1.0/24[V]   0          Fa0/1      10.1.1.1
        MAC/Encaps=0/0, MTU=1500, Tag Stack{}
        VPN route: vpn-lab
    Per-packet load-sharing
17     Aggregate   10.1.1.0/24[V]    0
        MAC/Encaps=0/0, MTU=0, Tag Stack{}
        VPN route: vpn-lab
    Per-packet load-sharing

any advice are appreciated.

one another question: one PE in a AS through static route connects to another PE in another AS,

could it can solve the mpls vpn could not span AS problem ? thanks.