Panasonic NN46240-710 - Manual (Page 5)

4.2.1 Typical networking...........................................................................................................................4-8
4.2.2 Configuration notes........................................................................................................................ 4-10
4.2.3 Troubleshooting flowchart............................................................................................................. 4-13
4.2.4 Troubleshooting procedure.............................................................................................................4-14
4.3 Troubleshooting cases................................................................................................................................ 4-17
4.3.1 VC type is not supported when setting up a PW on an ATM subinterface....................................4-17
4.3.2 A static PW cannot be switched with other PWs........................................................................... 4-19
4.3.3 Switch-L2VC is down after PW switching configuration............................................................. 4-21
4.3.4 PW attributes cannot be changed by using the reset pw command................................................4-22
4.3.5 VC is up but the PPP session cannot establish............................................................................... 4-26
4.3.6 VC under the interface is missing after the link protocol changes.................................................4-27
4.3.7 Both the session and the AC are up, but the VC cannot be up.......................................................4-29
4.3.8 Ethernet interconnects with ATM, the VC is up, but the ping between CEs fails......................... 4-33
4.3.9 CEs cannot communicate by using the accessing mode of VLAN................................................4-35
4.3.10 CEs cannot access each other though the static VC is up..............................................................4-35
4.3.11 VC is down though AC is up......................................................................................................... 4-37
4.3.12 Large-sized packets are lost between CEs on two ends of Layer 2 VPN...................................... 4-38
4.3.13 Failure to establish the MPLS LDP session between PEs when RIP-1 is used in the Layer 2 VPN
backbone.................................................................................................................................................. 4-39
4.4 FAQs.........................................................................................................................................................4-40
4.5 Diagnostic tools........................................................................................................................................ 4-44
4.5.1 display commands.......................................................................................................................... 4-44
4.5.2 debugging commands.....................................................................................................................4-45
5 VPLS troubleshooting...................................................................................................5-1
5.1 VPLS overview...........................................................................................................................................5-2
5.1.1 Related concepts of VPLS................................................................................................................5-2
5.1.2 Encapsulation type........................................................................................................................... 5-3
5.1.3 MTU................................................................................................................................................. 5-4
5.2 VPLS troubleshooting................................................................................................................................ 5-4
5.2.1 Typical networking...........................................................................................................................5-4
5.2.2 Configuration notes.......................................................................................................................... 5-6
5.2.3 Troubleshooting flowchart............................................................................................................. 5-10
5.2.4 Troubleshooting procedures........................................................................................................... 5-10
5.3 Troubleshooting cases.............................................................................................................................. 5-11
5.3.1 A VSI cannot be up in LDP signaling mode.................................................................................. 5-12
5.3.2 Packets cannot forward successfully between two PEs though VSI is up.......................................5-14
5.3.3 A VSI cannot be up in BGP signaling mode.................................................................................. 5-15
5.4 FAQs.........................................................................................................................................................5-17
5.5 Diagnostic tools........................................................................................................................................ 5-19
5.5.1 display commands.......................................................................................................................... 5-19
5.5.2 debugging command...................................................................................................................... 5-20
Nortel Secure Router 8000 Series
Troubleshooting - VPN_______________________________________________________________________________________
Issue 5.3 (19 January 2009) Nortel Networks Inc. iii