Cisco IOS Wide-Area Networking Configuration Guide - Free Books

Syslog, SNMP Trap, and show Command Enhancements for L2TPv3 in Cisco IOS Release 12.0(31)S, Cisco IOSRelease 12.2(27)SBC.Cisco IOS Release 12.0(31)S and Cisco IOS Release 12.2(27)SBC introduce new or enhancedcommands for managing and diagnosing problems with xconnect configurations:• debug vpdn—The output of this command includes authentication failure messages.• show l2tun session—The hostname keyword option allows the peer hostname to be displayed inthe output.• show l2tun tunnel—The authentication keyword option allows the display of global informationabout L2TP control channel authentication attribute-value pairs (AV pairs).• show xconnect—Displays xconnect-specific information, providing a sortable single point ofreference for information about all xconnect configurations.• snmp-server enable traps l2tun pseudowire status—Enables the sending of Simple NetworkManagement Protocol (SNMP) notifications when a pseudowire changes state.• xconnect logging pseudowire status—Enables syslog reporting of pseudowire status events.Control Message Statistics and Conditional Debugging Command EnhancementsThis feature introduces new commands and modifies existing commands for managing control messagestatistics and conditionally filtering xconnect debug messages.For this feature, the following commands were introduced:• clear l2tun counters—Clears session counters for Layer 2 tunnels.• clear l2tun counters tunnel l2tp—Clears global or per-tunnel control message statistics.• debug condition xconnect—Allows the conditional filtering of debug messages related to xconnectconfigurations (allows pseudowire conditional debugging)• monitor l2tun counters tunnel l2tp—Enables or disables the collection of per-tunnel controlmessage statistics.• show l2tun counters tunnel l2tp—Displays global or per-tunnel control message statistics.For this feature, the following command was modified:• show l2tun tunnel—The authentication keyword was removed. The statistics previously displayedby the show l2tun tunnel authentication command are now displayed by the show l2tun counterstunnel l2tp authentication command.38