Solved: TDP to LDP

cisco_lad2004 · ‎08-28-2006

Hi there

I am planning to migrate our whole network from TDP to LDP gradually.

Is there any issues in dhaving TDO & LDP running on same box during migration phase. and when I assume session will be down temprarily while tearning down TDP and setting up LDP.

TIA

Sam

mheusinger · ‎08-28-2006

Hi,

there should be no issues related to TDP to LDP migration. Also you can avoid outages by using:

1)

interface Ethernet0

tag-switching label protocol tdp

2)

interface Ethernet0

tag-switching label protocol both

!this will also start LDP. Give it time to "converge"

3)

interface Ethernet0

tag-switching label protocol ldp

As both TDP and LDP operate on the same internal LIB/LFIB there is the smooth migration path sketched above (could be mpls label protocol ... instead). I know of at least one major provider, who followed this path without issues and outages.

Hope this helps! Please rate all posts.

Regards, Martin

View solution in original post

mheusinger · ‎08-28-2006

Hi,

there should be no issues related to TDP to LDP migration. Also you can avoid outages by using:

1)

interface Ethernet0

tag-switching label protocol tdp

2)

interface Ethernet0

tag-switching label protocol both

!this will also start LDP. Give it time to "converge"

3)

interface Ethernet0

tag-switching label protocol ldp

As both TDP and LDP operate on the same internal LIB/LFIB there is the smooth migration path sketched above (could be mpls label protocol ... instead). I know of at least one major provider, who followed this path without issues and outages.

Hope this helps! Please rate all posts.

Regards, Martin

cisco_lad2004 · ‎08-28-2006

Hi Martin

Great answer !

I did not know u can use both on same interface. This will definitely allow me to migrate in business hours.

Best regards

Sam

Mahesh Gohil · ‎09-28-2010

Hi martin,

first of all sorry to reopen an old case

But This is not correct I have tested the same and everytime you give command (any of below) the tdp adjancency first tear down and then it tries to

perform new adjacency.

mpls label protocol tdp

mpls label protocol ldp

mpls label protocol both

I have also checked lables generated by the two PE which going to widrawn for 2-3 seconds.

Please correct me if i have misunderstood

Regards

Mahesh

Giuseppe Larosa · ‎09-28-2010

Hello Mahesh,

after 4 years the behaviour of IOS can have changed.

Also, there is some provider still using TDP ?

Hope to help

Giuseppe

Mahesh Gohil · ‎09-28-2010

Thanks Giuseppe for correcting me. but i struck in this situation and i need to change to ldp from tdp with some customer

running on PE.

but while testing in lab i noticed that tdp is tearing down.

anyway thanks for your kind reply...rated as it deserves.

regards

mahesh