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Cisco Bug: CSCut10104 - ISIS LSP advertising incorrect circuit-ID

Last Modified

Feb 08, 2017

Products (5)

  • Cisco Nexus 7000 Series Switches
  • Cisco Nexus 7000 10-Slot Switch
  • Cisco Nexus 7000 4-Slot Switch
  • Cisco Nexus 7000 18-Slot Switch
  • Cisco Nexus 7000 9-Slot Switch

Known Affected Releases

6.1(5)

Description (partial)

Symptom:
We see that we are sending out the correct circuit ID on hellos but while advertising on the LSP we are sending the incorrect information.

This causes incorrect topology calculation in ISIS.

ADJACENCY -
nrt00009i3      b0fa.eb1c.3602  2      UP     00:00:22   Ethernet1/12.22
  Up/Down transitions: 0
  Circuit Type: L2
  IPv4 Address: xx.aa.0.21
  IPv6 Address: 0::
  Circuit ID: 0072.0101.0073.04, Priority: 64
  BFD session requested and established
  Restart capable: 1; ack 0;
  Restart mode: 0; seen(ra 0; csnp(0; l1 0; l2 0)); suppress 0

nrt0000ai3      b0fa.eb68.1502  2      UP     00:00:31   Ethernet9/12.22
  Up/Down transitions: 0
  Circuit Type: L2
  IPv4 Address: xx.aa.0.29
  IPv6 Address: 0::
  Circuit ID: 0072.0101.0073.03, Priority: 64
  BFD session requested and established
  Restart capable: 1; ack 0;
  Restart mode: 0; seen(ra 0; csnp(0; l1 0; l2 0)); suppress 0

DATABASE -
0072.0101.0073.03-00* 0x0001A2D8   0x5D5F    965        0/0/0/3
    Instance      :  0x0000010E
    Extended IS   :  nrt00009i3.00      Metric : 0
    Extended IS   :  0072.0101.0073.00  Metric : 0
    Digest Offset :  0
  0072.0101.0073.04-00* 0x0001A2F8   0xA6E4    1154       0/0/0/3
    Instance      :  0x0000010E
    Extended IS   :  nrt0000ai3.00      Metric : 0
    Extended IS   :  0072.0101.0073.00  Metric : 0

Conditions:
none
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