Troubleshooting MPLS VPN Networks (Cisco

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Extra info for Troubleshooting MPLS VPN Networks (Cisco

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5 We Already Verified this Earlier c) or PE1 is dropping the received MPLS packets for some reason Ok… so let’s troubleshoot for (a) first. RST-3061 8186_05_2003_c1 RST-3061 8186_05_2003_c1 © 2003, Cisco Systems, Inc. All rights reserved. 62 Type escape sequence to abort. 62, timeout is 2 seconds: !!!!! 61 Type escape sequence to abort. 61, timeout is 2 seconds: !!!!! 10 • IP reachability is confirmed between PE1 and PE2. GOOD. But that doesn’t validate the LSP. • We will have to check P1’s LFIB to confirm whether it has correct label for PE1.

5 Type escape sequence to abort. 5, timeout is 2 seconds: ..... 5 PE2# • Ok… Although the pings failed on PE1, ICMP debugs on PE2 confirms that PE1->PE2 LSP is error free • Let’s ping in the other direction to find out the opposite path RST-3061 8186_05_2003_c1 75 © 2003, Cisco Systems, Inc. All rights reserved. 5 Type escape sequence to abort. 5, timeout is 2 seconds: ..... 5 We Already Verified this Earlier c) or PE1 is dropping the received MPLS packets for some reason Ok… so let’s troubleshoot for (a) first.

61/32 CE1 CE1 MPLS Backbone router bgp 1 ! 21 update-source Lo0 ! 21 send-comm both PE2 PE2 ! 6 CE2 PE2# V AS MsgRcvd MsgSent 4 1 6219 6188 4 65000 6185 6220 TblVer 96 96 InQ OutQ Up/Do wn 0 0 4d07h 0 0 4d07h State/PfxRcd 4 0 • CE2 is not advertising any prefix to PE2 RST-3061 8186_05_2003_c1 107 © 2003, Cisco Systems, Inc. All rights reserved. router bgp 1 ! 21 update-source Lo0 ! 21 send-comm both ! 62 Status codes: s suppressed, d damped, h history, * valid, > best , i - internal, r RIB-failure, S Stale Origin codes: i - IGP, e - EGP, ?

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