User manual

Nortel Secure Router 8000 Series
Configuration -WAN Access
ii Nortel Networks Inc. Issue 5.3 (
30 March 2009)
6.6.2 Creating a VT and assigning an IP address........................................................................................6-27
6.6.3 Directly binding the interface to an existing VT................................................................................6-27
6.6.4 Checking the configuration................................................................................................................6-28
6.7 Configuring MP authentication binding through the VT.............................................................................6-29
6.7.1 Establishing the configuration task ....................................................................................................6-29
6.7.2 Creating a VT.....................................................................................................................................6-30
6.7.3 Configuring a PPP interface to work in MP mode .............................................................................6-31
6.7.4 Checking the configuration................................................................................................................6-32
6.8 Configuring MP binding using the MP-group.............................................................................................6-33
6.8.1 Establishing the configuration task ....................................................................................................6-33
6.8.2 Adding an interface to an MP-group..................................................................................................6-34
6.8.3 Disabling the endpoint discriminator negotiation ..............................................................................6-36
6.8.4 Checking the configuration................................................................................................................6-37
6.9 Configuring MP limiting parameters...........................................................................................................6-38
6.9.1 Establishing the configuration task ....................................................................................................6-38
6.9.2 Configuring the MTU of the MP group .............................................................................................6-39
6.9.3 Configuring the maximum number of MP bundled links ..................................................................6-39
6.9.4 Configuring the minimum number of MP bundled links...................................................................6-40
6.9.5 Configuring the damping of the MP bundled links............................................................................6-41
6.9.6 Checking the configuration................................................................................................................6-41
6.10 Configuring MP fragment function...........................................................................................................6-42
6.10.1 Establishing the configuration task ..................................................................................................6-42
6.10.2 Configuring the minimum packet length of the fragment of the outbound packet ..........................6-43
6.10.3 Disabling the re-group of the fragments of the MP packets.............................................................6-43
6.10.4 Configuring the packet order guarantee function on the MP-group interface..................................6-44
6.10.5 Checking the configuration..............................................................................................................6-45
6.11 Maintaining PPP and MP ..........................................................................................................................6-46
6.12 Configuration examples ............................................................................................................................6-47
6.12.1 Example for configuring PAP authentication...................................................................................6-47
6.12.2 Example for configuring unidirectional CHAP authentication ........................................................6-50
6.12.3 Example for configuring bidirectional CHAP authentication..........................................................6-52
6.12.4 Example for binding MPs into the MP-group..................................................................................6-54
6.12.5 Example for configuring MP direct binding using the VT...............................................................6-59
6.12.6 Example for configuring MP authentication binding using the VT .................................................6-62
6.13 Troubleshooting.........................................................................................................................................6-68
6.13.1 Physical link is not in the up state....................................................................................................6-68
6.13.2 Link is always in the down state ......................................................................................................6-69
6.13.3 CHAP authentication of a PPP link fails..........................................................................................6-69
6.13.4 MP configured through the VT works abnormally ..........................................................................6-70