[c-nsp] Reply:R: mpls forwarding and ip forwarding

[Chris Welti]

Hi,

What Brian hinted to is how we do it in our network. MPLS is only used for EoMPLS/VPLS traffic,
the rest is routed via "normal" IP. We have dedicated /32s Loopbacks for the EoMPLS/VPLS endpoints
and only traffic to those /32s are labeled and MPLS switched.

example config for /32 MPLS loopbacks out of 10.0.255.0/24:

configuration for all backbone routers:

access-list 1 permit 10.0.255.0 0.0.0.255
no mpls ldp advertise-labels
mpls ldp advertise-labels for 1 ! only advertise labels for addresses contained in ACL 1
mpls label protocol ldp

additional loopback on edge routers where the EoMPLS/VPLS circuits terminate, e.g.:

interface Loopback1
   description MPLS loopback
   ip address 10.0.255.10 255.255.255.255
mpls ldp router-id Loopback1 force

Regards,
Chris

Am 27/02/14 03:54, schrieb ying-xiang:
> Hi,Brian
>
>
> Thank you for your reply!but i think it can not meet the requirements for what i need.
>
>
> the traffic between two vpn sites will always follow the FEC and this command can not distinguish them.
>
>
>
>
>
>
>
>
> At 2014-02-26 17:02:35,"Brian Turnbow" <b.turnbow at twt.it> wrote:
>> Hi,
>>
>>>
>>> Hi,
>>>
>>>
>>> As we know, if i enable mpls on the appropriate interface then the ip packets
>>> will be forwarded based on mpls forwarding table not the ip forwarding
>>> anymore.for some reason.my question is that is there any way to make the
>>> ip forwarding on the interfaces which mpls enabled?
>>
>> Not sure if  this is what you want .. .but I think so  ...
>> you can decide what to send labels for  with  filters using the command
>>
>> mpls ldp advertise-labels
>>
>> so what has a label is switched with mpls, what does not have a label uses ip forwarding.
>>
>> Regards,
>>
>> Brian
>>
>>
>>
>>
>>
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>>
>>
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