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RE: LDP label filtering

  • From: "Opio, Joe" <jopio@enterasys.com>
  • Date: Thu, 26 May 2005 16:05:45 -0400
  • Resent-Date: Thu, 26 May 2005 16:58:19 -0400
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Title: LDP label filtering

Label filtering is implemented due to security concerns, and performance in low end LSR.

Just as your filter routes, you would similarly filter labels.
Joe

 

From: Eli Hadad [mailto:eli_hadad@sheernetworks.com]
Sent: Thursday, May 26, 2005 4:27 PM
To: mpls-ops@mplsrc.com
Subject: [MPLS-OPS]: LDP label filtering

 

 

Hi all,

I just came accross a cisco LSR configuration in which label distribution is filtered by means of ACLs.
This is done in cisco IOS by the command:
mpls ldp advertise-labels

My question is:
What implementations need label filtering ?
I saw this configuration in MPLS VPN (2547) in which only labels for BGP router ids are distributed.
Why bother and filter some labels ?
Does it related to performance issues ?

Thanks,
Eli