Cisco 10000-2P2-2DC Software Configuration Manual page 270

Monitoring and Maintaining Multihop Configurations
Command
Router# show running-config
Router# show vpdn
Router# show vpdn session [all [interface |
tunnel | username] | packets | sequence | state |
timers | window]
Router# show vpdn tunnel [all [id | local-name |
remote-name] | packets | state | summary |
transport]
Router# show interface virtual-access number
Router# clear vpdn tunnel [l2tp [remote-name |
local-name]]
Router# debug vpdn event [protocol |
flow-control]
Router# debug vpdn error
Router# debug vpdn packet [control | data]
[detail]
Router# debug vpdn 12x-events
Router# debug vpdn 12x-errors
Router# debug vpdn 12x-packets
Router# debug vpdn 12x-data
Cisco 10000 Series Router Software Configuration Guide
9-10
Purpose
Displays the current router configuration. Use the output of this
command to ensure that the configuration:
Enables VPDN and multihop functionality
•
Terminates tunnels from the LAC
•
Maps the ingress tunnel name to the LNS
•
Performs VPDN tunnel authorization searches by ingress
•
tunnel name
(Optional) Configures an accept-dialin and request-dialout
•
VPDN group to preserve the TOS field of L2TP tunneled
IP packets
Displays information about active L2TP tunnels and sessions.
Displays VPDN session information including interface, tunnel,
username, packets, status, and window statistics.
Displays VPDN tunnel information including tunnel protocol,
ID, local and remote tunnel names, packets sent and received,
tunnel, and transport status.
Displays information about the virtual access interface, LCP,
protocol states, and interface statistics. The following
information indicates a normal working status for the virtual
access interface (# indicates the number of the VAI):
Virtual-Access# is up, line protocol is up
Shuts down a specific tunnel and all the sessions within the
tunnel.
Displays VPDN errors and basic events within the L2TP
protocol. Also displays errors associated with flow control.
Flow control is only possible if you use L2TP and you
Note
configure the remote peer receive window with a value
greater than zero.
Displays errors that prevent a tunnel from being established or
errors that cause an established tunnel to be closed.
Displays protocol-specific packet header information, such as
sequence numbers, flags, and length.
Displays L2TP events that are part of tunnel establishment or
shutdown.
Displays L2TP protocol errors that prevent tunnel establishment
or normal operation.
Displays the dialog between the LAC and LNS for tunnel or
session creation.
Checks L2TP data transfer.
Chapter 9 Configuring Multihop
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