From: Thomas Fowles (tfowles@gmail.com)
Date: Tue May 13 2008 - 23:13:16 ART
Somewhere between IOS 12.1 and 12.2 Cisco introduced "mpls" commands to
replace the more proprietary "tag-switching" command set (tag-switching
implies tdp, Cisco's own protocol). Also, general references to "tag
switching" have given way to "label switching".
You can use the tag-switching or mpls commands interchangeably. Depending
on what IOS version you are running, your config may or may not display the
command variant you type in. The results should be consistent though.
There is a good table in the 12.2 config guide that lists the old and new
commands side by side:
http://www.cisco.com/en/US/docs/ios/12_2/switch/configuration/guide/xcftagov_ps1835_TSD_Products_Configuration_Guide_Chapter.html#wp1026749
HTH
-Tom
CCIE#18762
On Tue, May 13, 2008 at 5:35 PM, marc fernandez <mag08036@yahoo.com> wrote:
> Question: if I am configuring mpls label ranges, protocol either ldp tdp.
> What is the difference on the interface command if it supports (mpls ip )
> or (tag ip)? Is there a major difference? If so can you share some
> experience or links on the subject? I've run into situations where the
> router only supports one of the commands and not both.
>
> example:
>
> mpls label protocol ldp
> mpls label range 20 40
> mpls ldp router-id loopback0
>
> int f0/0.99
> mpls ip
>
> or
>
> int f0/0.99
> tag ip
>
>
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