Cisco Cisco IOS Software Release 12.2(27)SBC
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L2TP Dial-Out Load Balancing and Redundancy
The L2TP Dial-Out Load Balancing and Redundancy feature introduces the ability to configure a tunnel
server with the IP addresses of multiple network access servers (NASs). You can control load balancing,
redundancy, and failover for Layer 2 Tunnel Protocol (L2TP) virtual private dialup network (VPDN)
calls by assigning each NAS the desired priority settings on the tunnel server. Load balancing occurs
between NASs with identical priority settings. When NASs are assigned different priority settings, if the
NAS with the highest priority goes down the tunnel server will fail over to a lower priority NAS.
server with the IP addresses of multiple network access servers (NASs). You can control load balancing,
redundancy, and failover for Layer 2 Tunnel Protocol (L2TP) virtual private dialup network (VPDN)
calls by assigning each NAS the desired priority settings on the tunnel server. Load balancing occurs
between NASs with identical priority settings. When NASs are assigned different priority settings, if the
NAS with the highest priority goes down the tunnel server will fail over to a lower priority NAS.
Configuration Information
Configuration information is included in the “Configuring Additional VPDN Features” module of the
, Release 12.4T, at the following URL:
Command Reference
This section documents modified commands.
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