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MPLS command on the interface (mpls ip) (tag ip) ?
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 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 > > > _______________________________________________________________________ > Subscription information may be found at: > http://www.groupstudy.com/list/CCIELab.html
