Re: MPLS Aggregate label

I read last night the impl-null is seen on the penultimate lsr ( MPLS router one hop prior to pe ( edge of MPLS cloud )).... I think impl-null results in poping of labels(s) .... Check me on this as it's been a while since I learned about MPLS

Aaron

On Mar 9, 2011, at 5:59 AM, "Roger Pfaeffli" <rpf23543_at_gmail.com> wrote:

> Found another good and quick description in the MPLS Architecture book:
>
> Action Description
> Aggregate Removes the top label in the stack and performs a Layer 3
> lookup.
> Pop Removes the top label in the stack and transmits the
> remaining payload as either a labeled packet or unlabeled IP packet.
> Push Replaces the top label in the stack with a set of labels.
> Swap Replaces the top label in the stack with another value.
> Untag Removes the top label and forwards the IP packet to the
> specified IP next hop.
>
> regards
>
> Roger
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of CCIE
> KID
> Sent: Mittwoch, 9. Mdrz 2011 12:18
> To: Cisco certification
> Subject: MPLS Aggregate label
>
> Hey what is the difference between Aggregate label ,implicit null and
> explicit null label in MPLS
>
>
> --
> With Warmest Regards,
>
> CCIE KID
> IN PURSUIT OF CCIE
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html

Blogs and organic groups at http://www.ccie.net
Received on Wed Mar 09 2011 - 07:11:16 ART