RE: MPLS Aggregate label

Just saw this in my lab today... imp-null seems to have some correlation to
connected routes.... perhaps someone can shed some light on this
fact/observation...

R6#sh mpls ip binding
  10.10.10.0/24
        in label: imp-null
  140.100.0.0/27
        in label: 24
  140.100.0.32/27
        in label: 23
  140.100.0.64/28
        in label: 20
  140.100.0.84/30
        in label: 22
  140.100.0.88/30
        in label: 21
  140.100.1.0/24
        in label: 25
  140.100.2.0/24
        in label: imp-null
  140.100.3.0/24
        in label: imp-null
  151.100.0.0/15
        in label: 34
  172.16.0.0/16
        in label: 26
  192.128.128.0/24
        in label: 19
  199.199.1.0/24
        in label: 29
  199.199.2.0/24
        in label: 28
  199.199.3.0/24
        in label: 27
  199.199.4.0/24
        in label: 33
  199.199.5.0/24
        in label: 32
  199.199.6.0/24
        in label: 31
  199.199.7.0/24
        in label: 30
  199.199.8.0/24
        in label: 18
  199.199.9.0/24
        in label: 17
  199.199.10.0/24
        in label: 16
R6#
R6#
R6#
R6#sh ip ro con
R6#sh ip ro connected
     140.100.0.0/16 is variably subnetted, 8 subnets, 4 masks
C 140.100.2.0/24 is directly connected, FastEthernet0/0
C 140.100.3.0/24 is directly connected, FastEthernet0/1
     10.0.0.0/24 is subnetted, 1 subnets
C 10.10.10.0 is directly connected, Ethernet4/0
R6#

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of CCIE
KID
Sent: Wednesday, March 09, 2011 5:18 AM
To: Cisco certification
Subject: MPLS Aggregate label

Hey what is the difference between Aggregate label ,implicit null and
explicit null label in MPLS

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CCIE KID
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