Cisco 10000 User Manual
Page 265
9-7
Cisco 10000 Series Router Software Configuration Guide
OL-2226-23
Chapter 9 Configuring Multihop
Optional Configuration Tasks for Multihop
Configuring a Request-Dialout VPDN Group to Preserve IP TOS
To configure a request-dialout VPDN group to preserve IP TOS, enter the following commands
beginning in global configuration mode:
configures vpdn-group 1 for L2TP dialout tunnel preservation of the IP TOS.
Example 9-2
Configuring a Request-Dialout VPDN Group for IP TOS Preservation
vpdn-group 1
request-dialout
protocol l2tp
pool-member 1
initiate-to ip 10.16.49.94
ip tos reflect
Command
Purpose
Step 1
Router(config)# vpdn-group number
Selects the VPDN group and enters VPDN configuration
mode.
Step 2
Router(config-vpdn)# request-dialout
Enables the LNS to request L2TP tunnels for dialout calls.
Step 3
Router(config-vpdn-req-out)# protocol l2tp
Specifies the Layer 2 Tunnel Protocol (L2TP) that the VPDN
subgroup will use.
Note
L2TP is the only protocol that supports dialout and IP
TOS preservation.
Step 4
Router(config-vpdn-req-out)# pool-member
pool-number
OR
Router(config-vpdn-req-out)# rotary-group
group-number
Specifies the dialer profile pool or dialer rotary group to use to
dial out.
Note
You can only configure one dialer profile pool or one
dialer rotary group. Attempting to configure a second
dialer resource removes the first resource from the
configuration.
Step 5
Router(config-vpdn-req-out)# exit
Returns to VPDN group mode.
Step 6
Router(config-vpdn)# initiate-to ip
ip-address [limit limit-number] [priority
priority-number]
Specifies the IP address of the LNS that is dialed out.
Optionally, you can configure the maximum number of
connections that can be made to the IP address and the priority
for the IP address (1 is the highest).
Step 7
Router(config-vpdn)# local name local-name
Specifies the local host name that the tunnel uses to identify
itself.
Step 8
Router(config-vpdn)# ip tos reflect
Configures the VPDN group to preserve the TOS field of L2TP
tunneled IP packets.