Subject: [mpls] basic doubt about LERs in MPLS

From: shilpa goel <[email-masked]>
Date: Wed, 17 Jan 2007 16:38:42 +0530

Hi,

 I have one basic doubt regarding LERs in IP/MPLS networks.

How does a LER decide whether it should do IP routing (i.e. IP Forwarding
Table lookup) or labelling (i.e. LFIB lookup) of the unlabeled IP packets
that it receives at an interface?

Linked to this I have another doubt that how are control/protocol packets
(which are IP) routed in a router i.e. are they label switched along the
LSPs that exist for the FECs/destinations to which they are addressed or by
default IP routed?

regards,
Shilpa
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