Alcatel-Lucent 7450 ESS Series Configuration Manual page 118

Os configuration guide
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Router L2TP Commands
next-attempt
next-attempt {same-preference-level | next-preference-level}
Syntax
no next-attempt
configure>router>l2tp
Context
configure>service>vprn>l2tp
This command enables tunnel selection algorithm based on the tunnel preference level.
Description
same-preference-level — In case that the tunnel-spec selection algorithm evaluates into a tunnel that
Parameters
next-preference-level — In case that the tunnel-spec selection algorithm evaluates into a tunnel that
replace-result-code
replace-result-code code [code...(upto 3 max)]
Syntax
no replace-result-code
configure>router>l2tp
Context
configure>service>vprn>l2tp
This command will replace CDN Result-Code 4, 5 and 6 on LNS with the Result Code 2. This is
Description
needed for interoperability with some implementation of LAC which only take action based on CDN
Result-Code 2, while ignore CDN Result-Code 4, 5 and 6.
no replace-result-code
Default
code — Specifies the L2TP Result codes that need to be replaced.
Parameters
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is currently unavailable (for example tunnel in a blacklist) then the next elected tunnel, if
available, will be chosen within the same preference-level as the last attempted tunnel. Only
when all tunnels within the same preference level are exhausted, the tunnel selection algorithm
will move to the next preference level.
In case that a new session setup request is received while all tunnels on the same preference level
are blacklisted, the L2TP session will try to be established on blacklisted tunnels before the
tunnel selection moves to the next preference level.
is currently unavailable (for example tunnel in a blacklist) then the selection algorithm will try to
select the tunnel from the next preference level, even though the tunnels on the same preference
level might be available for selection.
next-preference-level
Default
cdn-tmp-no-facilities — CDN Result-Code 4 on LNS will be replaced with the
Values
result code 2 before it is sent to LAC.
cdn-prem-no-facilities — CDN Result-Code 5 on LNS will be replaced with the
result code 2 before it is sent to LAC.
cdn-inv-dest — CDN Result-Code 6 on LNS will be replaced with the result code
2 before it is sent to LAC.
7450 ESS OS Router Configuration Guide

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