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Configuring an LNS ······················································································································································· 34
Creating a VT interface ········································································································································ 35
Configuring an LNS to accept L2TP tunneling requests from a specified LAC ··············································· 35
Configuring user authentication on an LNS ······································································································· 35
Configuring AAA authentication on an LNS ······································································································ 37
Configuring optional L2TP parameters ························································································································ 37
Configuring L2TP tunnel authentication ··············································································································· 37
Setting the Hello interval ······································································································································· 38
Enabling session flow control ······························································································································· 38
Configuring the DSCP value of L2TP packets ····································································································· 38
Configuring the VPN for a tunnel peer ··············································································································· 39
Configuring the TSA ID of the LTS device ··········································································································· 39
Displaying and maintaining L2TP ································································································································· 40
L2TP configuration examples ········································································································································ 40
Configuration example for NAS-initiated L2TP tunnel ······················································································· 40
Configuration example for client-initiated L2TP tunnel ······················································································ 42
Configuration example for LAC-auto-initiated L2TP tunnel ················································································ 44
Troubleshooting L2TP ····················································································································································· 46
Index ··········································································································································································· 48
