J.B.:
The default behavior is to generate narrow metrics.
In this mode the router will accept and generate only narrow-style
metrics - (TLV 128).
You can configure a router to generate wide-style metrics.
In this mode the router will accept and generate only wide-style
metrics - (TLV 135).
When you have routers in your network which can understand either
narrow-only or wide-only, to interoperate between them - you can
configure the router(s) for 'transition' mode.
In this mode based on whether it is 'narrow transition' or
'wide transition', the router will accept narrow and wide and generate
narrow only or vice versa.
The 'transition' mode is recommended to be used only during the
transition phase of the routers from narrow to wide.
You can look at the 'show clns protocol' command to figure out what
kind of ISIS metric style that the router is generating/accepting.
Hope it helps,
/Shankar
! Date: Thu, 7 Jun 2001 03:28:56 -0400
! From: j.belcina@computer.org
! Subject: Narrow/Wide ISIS metrics
!
!
! Does anyone know what's the behaviour of a Cisco router,
! set to default (generate narrow metrics only), when it receives both types
! of TLVs for the same prefix?
!
! Thanks.
! J.B.
!
!
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