These log messages refer to the L2TP (L2TP tunnel events) category.
2.42.1. l2tpclient_resolve_successful (ID: 02800001)
- Default Severity
- NOTICE
- Log Message
- L2TP client <iface> resolved <remotegwname> to <remotegw>
- Explanation
- The L2TP client successfully resolved the DNS name of the remote gateway.
- Firewall Action
- None
- Recommended Action
- None
- Revision
- 1
- Parameters
- iface
remotegwname
remotegw
2.42.2. l2tpclient_resolve_failed (ID: 02800002)
- Default Severity
- WARNING
- Log Message
- L2TP client <iface> failed to resolve <remotegwname>
- Explanation
- The L2TP client failed to resolve the DNS name of the remote gateway.
- Firewall Action
- None
- Recommended Action
- Make sure you have configured the DNS name of the remote gateway and the DNS servers correctly.
- Revision
- 1
- Parameters
- iface
remotegwname
2.42.3. l2tpclient_init (ID: 02800003)
- Default Severity
- NOTICE
- Log Message
- L2TP client initialized, request sent to server on <remotegw>
- Explanation
- The L2TP client has been initialized and a request has been sent to the remote gateway.
- Firewall Action
- None
- Recommended Action
- None
- Revision
- 1
- Parameters
- iface
remotegw
2.42.4. l2tp_connection_disallowed (ID: 02800004)
- Default Severity
- NOTICE
- Log Message
- L2TP connection disallowed according to rule <rule>! Tunnel ID: <tunnelid>, Session ID: <sessionid>
- Explanation
- The L2TP connection is disallowed according to the specified userauth rule.
- Firewall Action
- None
- Recommended Action
- Make sure the userauth rules are configured correctly.
- Revision
- 1
- Parameters
- rule
tunnelid
sessionid
2.42.5. unknown_l2tp_auth_source (ID: 02800005)
- Default Severity
- WARNING
- Log Message
- Unknown L2TP authentication source for <rule>! Tunnel ID: <tunnelid>, Session ID: <sessionid>
- Explanation
- The authentication source for the specified userauth rule is unknown to the L2TP server.
- Firewall Action
- None
- Recommended Action
- Make sure the userauth rules are configured correctly.
- Revision
- 1
- Parameters
- rule
tunnelid
sessionid
2.42.6. only_routes_set_up_by_server_iface_allowed (ID: 02800006)
- Default Severity
- WARNING
- Log Message
- L2TP server <iface> received a packet routed by a route not set up by the interface itself. Dropping packet
- Explanation
- The L2TP server received a packet that was routed to the interface by a route that was either manually configured or set up
by another subsystem.
- Firewall Action
- drop
- Recommended Action
- Make sure no manually configured routes to the L2TP server interface exists in the configuration.
- Revision
- 1
- Parameters
- iface
2.42.7. l2tp_session_closed (ID: 02800007)
- Default Severity
- NOTICE
- Log Message
- Closed L2TP session. Session ID: <sessionid>, Tunnel ID: <tunnelid>
- Explanation
- The L2TP session with the specified session ID has been closed. The session was set up using the specified tunnel.
- Firewall Action
- None
- Recommended Action
- None
- Revision
- 1
- Parameters
- iface
sessionid
tunnelid
2.42.8. l2tp_tunnel_closed (ID: 02800008)
- Default Severity
- NOTICE
- Log Message
- Closed L2TP tunnel. Tunnel ID: <tunnelid>, Interface: <iface>.
- Explanation
- The L2TP tunnel with the specified tunnel ID has been closed.
- Firewall Action
- None
- Recommended Action
- None
- Revision
- 1
- Parameters
- iface
tunnelid
2.42.9. session_closed (ID: 02800009)
- Default Severity
- WARNING
- Log Message
- MPPE failed but is required, closing session <sessionid> to <remotegw> on <iface>
- Explanation
- MPPE is required by the configuration but the MPPE negotiation failed. Session will be closed.
- Firewall Action
- None
- Recommended Action
- Make sure the peer is capable of MPPE encryption, or disable the MPPE requirement.
- Revision
- 1
- Parameters
- iface
sessionid
remotegw
2.42.10. l2tp_session_request (ID: 02800010)
- Default Severity
- NOTICE
- Log Message
- L2TP session request sent. Tunnel ID: <tunnelid>
- Explanation
- An L2TP session request has been sent over the specified L2TP tunnel.
- Firewall Action
- None
- Recommended Action
- None
- Revision
- 1
- Parameters
- tunnelid
2.42.11. l2tp_session_up (ID: 02800011)
- Default Severity
- NOTICE
- Log Message
- L2TP session up. Tunnel ID: <tunnelid>, Session ID: <sessionid>, Auth: <auth>, MPPE: <mppe>
- Explanation
- The L2TP session negotiation has completed successfully.
- Firewall Action
- None
- Recommended Action
- None
- Revision
- 1
- Parameters
- tunnelid
sessionid
auth
mppe
2.42.12. l2tp_no_userauth_rule_found (ID: 02800014)
- Default Severity
- WARNING
- Log Message
- Did not find a matching userauth rule for this L2TP server! Tunnel ID: <tunnelid>, Session ID: <sessionid>
- Explanation
- The L2TP server was unsuccessful trying to find a matching userauth rule.
- Firewall Action
- None
- Recommended Action
- Make sure the userauth rules are configured correctly.
- Revision
- 1
- Parameters
- tunnelid
sessionid
2.42.13. l2tp_session_request (ID: 02800015)
- Default Severity
- NOTICE
- Log Message
- L2TP session request received. Tunnel ID: <tunnelid>
- Explanation
- A new session request was received on the specified tunnel.
- Firewall Action
- None
- Recommended Action
- None
- Revision
- 1
- Parameters
- tunnelid
2.42.14. l2tp_session_up (ID: 02800016)
- Default Severity
- NOTICE
- Log Message
- L2TP session up. Tunnel ID: <tunnelid>, Session ID: <sessionid>, User: <user>, Auth: <auth>, MPPE: <mppe>, Assigned IP: <assigned_ip>
- Explanation
- The L2TP session negotiation has completed successfully.
- Firewall Action
- None
- Recommended Action
- None
- Revision
- 1
- Parameters
- tunnelid
sessionid
user
auth
mppe
assigned_ip
2.42.15. failure_init_radius_accounting (ID: 02800017)
- Default Severity
- WARNING
- Log Message
- Failed to send Accounting Start to RADIUS Accounting Server. Accounting will be disabled
- Explanation
- Failed to send START message to RADIUS accounting server. RADIUS accounting will be disabled for this session.
- Firewall Action
- accounting_disabled
- Recommended Action
- Make sure the RADIUS accounting configuration is correct.
- Revision
- 1
2.42.16. l2tpclient_tunnel_up (ID: 02800018)
- Default Severity
- NOTICE
- Log Message
- L2TP tunnel to <remotegw> is up. Tunnel ID: <tunnelid>
- Explanation
- L2TP tunnel negotiated successfully.
- Firewall Action
- None
- Recommended Action
- None
- Revision
- 1
- Parameters
- tunnelid
iface
remotegw
2.42.17. malformed_packet (ID: 02800019)
- Default Severity
- WARNING
- Log Message
- Malformed packet received from <remotegw> on tunnel <iface>. Error code: <error_code>
- Explanation
- A malformed packet was received by the L2TP interface.
- Firewall Action
- None
- Recommended Action
- None
- Revision
- 1
- Parameters
- iface
remotegw
error_code
2.42.18. unknown_ctrl_conn_id (ID: 02800020)
- Default Severity
- WARNING
- Log Message
- Unknown Control Connection ID <ctrlconnid> from <remotegw> on tunnel <iface>.
- Explanation
- A packet with an unknown Control Connection ID was received by the L2TP interface.
- Firewall Action
- None
- Recommended Action
- None
- Revision
- 1
- Parameters
- iface
remotegw
ctrlconnid
2.42.19. l2tp_session_closed (ID: 02800037)
- Default Severity
- NOTICE
- Log Message
- Closed L2TP session. Session ID: <sessionid>, Tunnel ID: <ctrlconnid>
- Explanation
- The L2TP session with the specified session ID has been closed. The session was set up using the specified tunnel.
- Firewall Action
- None
- Recommended Action
- None
- Revision
- 1
- Parameters
- iface
sessionid
ctrlconnid
2.42.20. l2tp_tunnel_closed (ID: 02800038)
- Default Severity
- NOTICE
- Log Message
- Closed L2TP tunnel. Tunnel ID: <ctrlconnid>, Interface: <iface>.
- Explanation
- The L2TP tunnel with the specified tunnel ID has been closed.
- Firewall Action
- None
- Recommended Action
- None
- Revision
- 1
- Parameters
- iface
ctrlconnid
2.42.21. l2tp_session_request (ID: 02800045)
- Default Severity
- NOTICE
- Log Message
- L2TP session request received. Control Connection ID: <ctrlconnid>
- Explanation
- A new session request was received on the specified tunnel.
- Firewall Action
- None
- Recommended Action
- None
- Revision
- 1
- Parameters
- ctrlconnid
2.42.22. l2tp_session_up (ID: 02800046)
- Default Severity
- NOTICE
- Log Message
- L2TP session up. Control Connection ID: <ctrlconnid>, Session ID: <sessionid>
- Explanation
- The L2TP session negotiation has completed successfully.
- Firewall Action
- None
- Recommended Action
- None
- Revision
- 1
- Parameters
- ctrlconnid
sessionid
2.42.23. l2tp_session_up (ID: 02800047)
- Default Severity
- NOTICE
- Log Message
- L2TP session up. Control Connection ID: <ctrlconnid>, Session ID: <sessionid>
- Explanation
- The L2TP session negotiation has completed successfully.
- Firewall Action
- None
- Recommended Action
- None
- Revision
- 1
- Parameters
- ctrlconnid
sessionid
2.42.24. waiting_for_ip_to_listen_on (ID: 02800050)
- Default Severity
- NOTICE
- Log Message
- L2TP server <iface> cannot start until it has an IP address to listen on
- Explanation
- The L2TP server cannot start until the L2TP interface has a proper IP address to listen on.
- Firewall Action
- None
- Recommended Action
- Make sure that the IP address is configured correctly on the L2TP server interface, or that the DHCP server can hand out a
proper IP address to the interface.
- Revision
- 1
- Parameters
- iface
2.42.25. no_session_found (ID: 02800060)
- Default Severity
- WARNING
- Log Message
- No session found for message sent from <remotegw> on tunnel <iface>.
- Explanation
- No session found for message received by the L2TP interface.
- Firewall Action
- None
- Recommended Action
- None
- Revision
- 1
- Parameters
- iface
remotegw
cOS Core 15.00.01 Log Reference Guide
