Modifying L2Tp Lac Default Settings For Managing Destinations, Tunnels And Sessions - Juniper JUNOSE SOFTWARE 11.0.X - BROADBAND ACCESS CONFIGURATION GUIDE 4-1-2010 Configuration Manual

JUNOSe 11.0.x Broadband Access Configuration Guide
2.
CAUTION: You must explicitly assign a router ID to a virtual router rather than using
a dynamically assigned router ID. A fixed ID is required because every time the ID
changes, L2TP must disconnect all existing tunnels and sessions that use the old ID.
If you use a dynamically assigned router ID, the value can change without warning,
leading to failure of all L2TP tunnels and sessions. Also, the router could dynamically
assign a router ID that is not reachable by the L2TP peer, causing a complete failure
of L2TP. You must set the router ID even if you specified a source address in the
domain map or a local address in the host profile.
3.
NOTE: If you are using shared tunnel-server ports, you must configure the shared
tunnel-server ports before you configure Layer 2 Tunneling Protocol (L2TP) network
server (LNS) support. You use the tunnel-server command in Global Configuration
mode to specify the physical location of the shared tunnel-server port that you want
to configure.
See JUNOSe Physical Layer Configuration Guide for additional information about the
tunnel-server command and shared tunnel-server ports.
Related Topics
Modifying L2TP LAC Default Settings for Managing Destinations, Tunnels, and
Sessions
Configuring an E Series router for B-RAS enables the router to operate as an LAC
with default settings. You can modify the default settings as follows:
NOTE: The previous two operations also apply to an LNS, however there is no default
configuration that enables the LNS.
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Modifying L2TP LAC Default Settings for Managing Destinations, Tunnels, and Sessions
Assign a router ID IP address, such as that for a loopback interface, to the virtual
router. This address must be reachable by the L2TP peer.
host1:west(config)#ip router-id 10.10.45.3
When configuring the router as a LAC, configure the router or virtual router for
Broadband Remote Access Server (B-RAS).
virtual-router
ip router-id
Enable the verification of data integrity via UDP.
Specify the time period for which the router maintains dynamic destinations,
tunnels, or sessions after termination.