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Chapter 15
L2TP Disconnect Cause Codes
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L2TP Disconnect Cause Codes on page 417
L2TP Disconnect Cause Codes
Table 79 on page 417 describes the Point-to-Point Protocol (PPP) disconnect cause
codes that are displayed by the
show l2tp received-disconnect-cause-summary
command, sorted by code number. For additional information, see RFC 3145.
Table 79: PPP Disconnect Cause Codes
Description Name Code
Code 0 includes disconnect causes that are not specifically identified
by other codes. This code is generated in the following circumstances:
■
Internal resource constraints (for example, excessive load or
reduced resource availability) have prevented the generation
of a more specific disconnect code.
■
RFC 3145 does not define a disconnect code that corresponds
to the cause of the disconnection.
The following list shows current disconnection causes on an E Series
LNS that do not have a specific disconnect cause codes:
■
The peer initiated termination of LCP after the completion of
LCP negotiations, but prior to proceeding to authentication of
NCP negotiation. No conditions occurred that enabled the LNS
to infer a more informative disconnect code.
■
The peer initiated renegotiation of LCP.
■
Invalid local MRU (for example, MRU negotiation has been
disabled, but the lower MRU is less than the default MRU of
1500).
■
Unexpected local MLPPP MRRU for existing bundle (RFC 3145
code 10 covers peer MRRU mismatches, but not local
mismatches).
■
Authentication failures not covered by any of the
authentication-related codes (codes 13-16), such as:
■
Authentication denial of the local LCP by the peer
■
Local authentication failure due to no resources
■
Local authentication failure due to no authenticator
no info 0
L2TP Disconnect Cause Codes
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