Re: [OSL | CCIE_RS] MPLS Label Filtering

m.lammerse Wed, 21 Jul 2010 23:26:30 -0700

Hi Victor,

before you apply ldp label filtering, you need to issue the 'no mpls ldp advertise-labels' command first to purge any existing labels. This seems to be present on R1, but not the other routers.

HTH

On 21 Jul, 2010,at 11:19 PM, Victor Reyes II <[email protected]> wrote:

Does anyone have any suggestions?

On Tue, Jul 20, 2010 at 3:02 PM, Victor <[email protected]> wrote:
Hello,

   I have the following scenario. I am trying the filter out the interconnect links from the LIB table and the LFIB table. The layout of the network can be found at http://i28.tinypic.com/2gtndyh.jpg So far Router 1 is the only device which is correctly filtering out the interconnected links. I checked the configuration on the other routers and they looked correct to me. Below is also the outputs that Router1 is filtering the interconnect links. Also below is the output of BB1 that showing that the other routers are not filtering correctly. Below is all the MPLS and access list for configuration portion.

Thank you

R1 Configs/Outputs

R1#show mpls forwarding-table

Local Outgoing Prefix Bytes tag Outgoing Next Hop
tag tag or VC or Tunnel Id switched interface

100 206 777.7.7/32 0 Fa0/0 10.1.12.2
101 205 7.7.7.7/32 0 Fa0/0 10.1.12.2

102 204 6.6.6.6/32 0 Fa0/0 10.1.12.2
103 203 5.5.5.5/32 0 Fa0/0 10.1.12.2

104 202 4.4.4.4/32 0 Fa0/0 10.1.12.2
105 201 3.3.3.3/32 0 Fa0/0 10.1.12.2

106 207 10.1.45.0/24 0 Fa0/0 10.1.12.2
107 208 10.1.35.0/24 0 Fa0/0 10.1.12.2

108 209 10.1.34.0/24 0 Fa0/0 10.1.12.2
109 211 10.1.67.0/24 0 Fa0/0 10.1.12.2

110 210 10.1.56.0/24 0 Fa0/0 10.1.12.2
111 Pop tag 10.1.23.0/24 0 Fa0/0 10.1.12.2

112 Untagged 2.2.2.2/32 0 Fa0/0 101.12.2
113 212 177.7.7.0/24 0 Fa0/0 10.1.12.2

R1#show mpls ldp bind
  tib entry: 1.1.1.0/24, rev 58

   local binding: tag: imp-null
  tib entry: 1.1.11/32, rev 59

   remote binding: tsr: 2.2.2.2:0, tag: 200
  tib entry: 2.2.2.0/24, rev 60

   remote binding: tsr: 2.2.2.2:0, tag: imp-null
  tib entry: 2.2.2.2/32, rev 61

   local binding: tag: 112
  tib entry: 3.3.3.3/32, rev 62

   local binding: tag: 105
   remote binding: tsr: 2.22.2:0, tag: 201

  tib entry: 4.4.4.4/32, rev 63
   local binding: tag: 104

   remote binding: tsr: 2.2.2.2:0, tag: 202
  tib entry: 5.5.5.5/32, rev 64

   local binding: tag: 103
   remote binding: tsr: 2.2.2.2:0, tag: 203

  tib entry: 6.6.6.6/32, rev 65
   local binding: tag: 102

   remote binding: tsr: 2.2.2.2:0, tag: 204
  tib entry: 7.7.7.7/32, rev 66

   local binding: tag: 101
   remote binding: tsr: 2.2.2.2:0, tag: 205

  tib entry: 10.1.12.0/24, rev 47
   local binding: tag: imp-null

   remote binding: tsr: 2.2.2.2:0, tag: imp-null
  tib entry: 10.1.23.0/24, rev 48

   local binding: tag: 111
   remote binding: tsr: 2.2.2.2:0, tag: imp-null

  tib entry: 10.1.34.0/24, rev 49
   local binding: tag: 108

   remote binding: tsr: 2.2.2.2:0, tag: 209
  tib entry: 10.1.35.0/24, rev 50

   local binding: tag: 107
   remote binding: tsr: 2.2.2.2:0, tag: 208

  tib entry: 10.1.45.0/24, rev 51
   local binding: tag: 106

   remote binding: tsr: 2.2.2.2:0, tag: 207
  tib entry: 10.1.56.0/24, rev 52

   local binding: tag: 110
   remote binding: tsr: 2.2.2.2:0, tag: 210

  tib entry: 10.1.67.0/24, rev 53
   local binding: tag: 109

   remote binding: tsr: 2.2.2.2:0, tag: 211
  tib entry: 11.1.1.0/24, rev 67

   local binding: tag: imp-null
  tib entry: 22.2.2.0/24, rev 68

   remote binding: tsr: 2.2.2.2:0, tag: imp-null
  tib entry: 77.7.7.7/32, rev 69

   local binding: tag: 100
   remote binding: tsr: 2.2.2.2:0, tag: 206

  tib entry: 177.7.7.0/24, rev 70
   local binding: tag: 113

   remote binding: tsr: 2.2.2.2:0, tag: 212

mpls label range 100 199

mpls label protocol ldp
no mpls ldp advertise-labels
mpls ldp advertise-labels for 1 to 2

mpls ldp router-id Loopback0

access-list 1 deny 10.1.12.0 0.0.0.255

access-list 1 deny 10.1.23.0 0.0.0.255
access-list 1 deny 10.1.34.0 0.0.0.255

access-list 1 deny 10.1.350 0.0.0.255
access-list 1 deny 10.1.45.0 0.0.0.255

access-list 1 deny 10.1.56.0 0.0.0.255
access-list 1 deny 10.1.67.0 0.0.0.255

access-list 1 permit any
access-list 2 permit any

R2 Configs/Output of R1

R2#show mpls for
Local Outgoing Prefix Bytes tag Outgoing Next Hop

tag tag or VC or Tunnel Id switched interface
200 Untagged 1.1.1.1/32 0 Fa0/0 10.1.12.1

201 Untagged 3.3.3.3/32 0 Fa0/1 10.1.23.3
202 300 4.4.4.4/32 0 Fa0/1 10.1.23.3

203 301 5.5.5.5/32 0 Fa0/1 10.1.23.3
204 304 6.6.6.6/32 0 Fa0/1 10.1.23.3

205 307 7.7.7.7/32 0 Fa0/1 10.1.23.3
206 306 77.7.7.7/32 0 Fa0/1 10.1.23.3

207 303 10.1.45.0/24 0 Fa0/1 10.1.23.3
208 Pop tag 10.1.35.0/24 0 Fa0/1 10.1.23.3

209 Pop tag 10.1.34.0/24 0 Fa0/1 10.1.23.3
210 302 10.1.56.0/24 0 Fa0/1 10.1.23.3

211 305 10.1.67.0/24 0 Fa0/1 10.1.23.3
212 311 177.7.7.0/24 0 Fa0/1 10.1.23.3

R2#

R2#show mpls ldp bind nei 1.1.1.1

  tib entry: 1.1.1.0/24, rev 42
   remote binding: tsr: 1.1.1.1:0, tag: imp-null

  tib entry: 2.2.2.2/32, rev 45
   remote binding: tsr: 1.1.1.1:0, tag: 112

  tib entry: 3.3.3.3/32, rev 47
   remote binding: tsr: 1.1.1.1:0, tag: 105

  tib entry: 4.4.4.4/32, rev 48
   remote binding: tsr: 1.1.1.1:0, tag: 104

  tib entry: 5.5.5.5/32, rev 49
   remote binding: tsr: 1.1.1.1:0, tag: 103

  tib entry: 6.6.6.6/32, rev 50
   remote binding: tsr: 1.1.1.1:0, tag: 102

  tib entry: 7.7.7.7/32, rev 51
   remote binding: tsr: 1.1.1.1:0, tag: 101

  tib entry: 11.1.1.0/24, rev 52
   remote binding: tsr: 1.1.1.1:0, tag: imp-null

  tib entry: 77.7.7.7/32, rev 55
   remote binding: tsr: 1.1.1.1:0, tag: 100

  tib entry: 177.7.7.0/24, rev 56
   remote binding: tsr: 1.11.1:0, tag: 113

mpls label range 200 299
mpls label protocol ldp

mpls ldp advertise-labels for 1 to 2
mpls ldp router-id Loopback0

access-list 1 deny 10.1.12.0 0.0.0.255
access-list 1 deny 10.1.23.0 0.0.0.255

access-list 1 deny 10.1.34.0 0.0.0.255
access-list 1 deny 10.1.35.0 0.0.0.255

access-list 1 deny 10.1.45.0 0.00.255
access-list 1 deny 10.1.56.0 0.0.0.255

access-list 1 deny 10.1.67.0 0.0.0.255
access-list 1 permit any

access-list 2 permit any

BB1 Configs/Output

BB1#show mpls for

Local Outgoing Prefix Bytes tag Outgoing Next Hop
tag tag or VC or Tunnel Id switched interface

712 610 1.1.1.1/32 0 Fa0/0 10.1.67.6
713 611 2.2.2.2/32 0 Fa0/0 10.1.67.6

714 602 3.3.3.3/32 0 Fa0/0 10.1.67.6
715 601 4.4.4.4/32 0 Fa0/0 10.1.67.6

716 600 5.5.5.5/32 0 Fa0/0 10.1.67.6
717 Untagged 6.6.6.6/32 0 Fa0/0 10.1.67.6

718 609 10.1.12.0/24 0 Fa0/0 10.1.67.6
719 606 10.1.23.0/24 0 Fa0/0 10.1.67.6

720 603 10.1.45.0/24 0 Fa0/0 10.1.67.6
721 604 10.1.35.0/24 0 Fa0/0 10.1.67.6

722 605 10.1.34.0/24 0 Fa0/0 10.1.67.6
723 Pop tag 10.1.56.0/24 0 Fa0/0 10.1.67.6

BB1#sh mpls ldp bind
  tib entry: 1.1.1.1/32, rev 37

   local binding: tag: 712
   remote binding: tsr: 6.6.6.6:0, tag: 610

  tib entry: 2.2.2.2/32, rev 38
   local binding: tag: 713

   remote binding: tsr: 6.6.6.6:0, tag: 611
  tib entry: 3.3.3.3/32, rev 39

   local binding: tag: 714
   remote binding: tsr: 6.6.6.6:0, tag: 602

  tib entry: 4.4.4.4/32, rev 40
   local binding: tag: 715

   remote binding: tsr: 6.6.6.6:0, tag: 601
  tib entry: 5.5.5.5/32, rev 41

   local binding: tag: 716
   remote binding: tsr: 6.6.6.6:0, tag: 600

  tib entry: 6.6.6.0/24, rev 42
   remote binding: tsr: 6.6.6.6:0, tag: imp-null

  tib entry: 6.6.6.6/32, rev 43
   local binding: tag: 717

  tib entry: 7.7.7.0/24, rev 44
   local binding: tag: imp-null

  tib entry: 7.7.7.7/32, rev 45
   remote binding: tsr: 6.6.6.6:0, tag: 608

  tib entry: 10.1.12.0/24, rev 20
   local binding: tag: 718

   remote binding: tsr: 6.6.6.6:0, tag: 609
  tib entry: 10.1.23.0/24, rev 22

   local binding: tag: 719
   remote binding: tsr: 6.6.6.6:0, tag: 606

  tib entry: 10.1.34.0/24, rev 28
   local binding: tag: 722

   remote binding: tsr: 6.6.6.6:0, tag: 605
  tib entry: 10.1.35.0/24, rev 26

   local binding: tag: 721
   remote binding: tsr: 6.6.6.6:0, tag: 604

  tib entry: 10.1.45.0/24, rev 24
   local binding: tag: 720

   remote binding: tsr: 6.6.6.6:0, tag: 603
  tib entry: 10.1.56.0/24, rev 30

   local binding: tag: 723
   remote binding: tsr: 6.6.6.6:0, tag: imp-null

  tib entry: 10.1.67.0/24, rev 32
   local binding: tag: imp-null

   remote binding: tsr: 6.6.6.6:0, tag: imp-null
  tib entry: 66.6.6.0/24, rev 46

   remote binding: tsr: 6.6.6.6:0, tag: imp-null
  tib entry: 77.7.7.0/24, rev 47

   local binding: tag: imp-null
  tib entry: 77.7.7.7/32, rev 48

   remote binding: tsr: 6.6.6.6:0, tag: 607
  tib entry: 177.7.7.0/24, rev 49

   local binding: tag: imp-null
   remote binding: tsr: 6.6.6.6:0, tag: 612

mpls label range 700 799

mpls label protocol ldp
mpls ldp advertise-labels for 1 to 2

mpls ldp router-id Loopback0

access-list 1 deny 10.1.12.0 0.0.0.255

access-list 1 deny 10.1.23.0 0.0.0.255
access-list 1 deny 10.1.34.0 0.0.0.255

access-list 1 deny 10.1.35.0 0.0.0.255
access-list 1 deny 10.1.45.0 0.0.0.255

access-list 1 deny 10.1.56.0 0.0.0.255
access-list 1 deny 10.1.67.0 0.0.0255

access-list 1 permit any
access-list 2 permit any

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Re: [OSL | CCIE_RS] MPLS Label Filtering

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