Panasonic NN46240-710 - Manual (Page 4)

2.3 Troubleshooting cases.............................................................................................................................. 2-10
2.3.1 Ping of the peer tunnel fails although the network layer protocols on both ends are up................. 2-11
2.3.2 PCs cannot ping through each other although tunnel interfaces on two ends can ping each other
successfully............................................................................................................................................. 2-14
2.4 FAQs.........................................................................................................................................................2-15
2.5 Diagnostic tools........................................................................................................................................ 2-17
2.5.1 display commands.......................................................................................................................... 2-17
2.5.2 debugging commands.....................................................................................................................2-19
2.5.3 Alarms............................................................................................................................................ 2-21
3 BGP/MPLS IP VPN troubleshooting...........................................................................3-1
3.1 BGP/MPLS IP VPN overview....................................................................................................................3-2
3.1.1 Introduction to VPN......................................................................................................................... 3-2
3.1.2 Network topology.............................................................................................................................3-3
3.1.3 Operation model...............................................................................................................................3-3
3.2 MPLS L3VPN troubleshooting.................................................................................................................. 3-5
3.2.1 Typical networking...........................................................................................................................3-5
3.2.2 Configuration notes.......................................................................................................................... 3-6
3.2.3 Troubleshooting flowchart............................................................................................................... 3-9
3.2.4 Troubleshooting procedure.............................................................................................................3-10
3.3 Troubleshooting cases.............................................................................................................................. 3-14
3.3.1 PE fails to send private network routes to the remote CE............................................................... 3-14
3.3.2 CEs cannot communicate............................................................................................................... 3-17
3.3.3 Failure to ping large packets of the private network...................................................................... 3-18
3.3.4 PE cannot ping through the remote CE network segment...............................................................3-19
3.3.5 Failure to establish the MP-EBGP peer in inter-AS VPN-OptionC...............................................3-20
3.4 FAQs.........................................................................................................................................................3-21
3.5 Diagnostic tools........................................................................................................................................ 3-23
3.5.1 display commands.......................................................................................................................... 3-23
3.5.2 debugging commands.....................................................................................................................3-23
3.5.3 Alarms............................................................................................................................................ 3-24
3.5.4 Logs................................................................................................................................................ 3-26
4 MPLS L2VPN troubleshooting.................................................................................... 4-1
4.1 MPLS Layer 2 VPN overview....................................................................................................................4-2
4.1.1 Introduction to MPLS Layer 2 VPN................................................................................................ 4-2
4.1.2 CCC MPLS Layer 2 VPN................................................................................................................ 4-3
4.1.3 SVC MPLS Layer 2 VPN................................................................................................................ 4-4
4.1.4 Martini MPLS Layer 2 VPN............................................................................................................ 4-4
4.1.5 PWE3 MPLS Layer 2 VPN..............................................................................................................4-5
4.1.6 Kompella MPLS Layer 2 VPN.........................................................................................................4-6
4.1.7 MPLS Layer 2 VPN IP-interworking...............................................................................................4-6
4.2 Layer 2 VPN troubleshooting.....................................................................................................................4-7
Nortel Secure Router 8000 Series
_____________________________________________________________________________________ Troubleshooting - VPN
Nortel Networks Inc. Issue 5.3 (19 January 2009) ii