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Cisco Bug: CSCus82982 - Changing 'is-type' for ISIS configuration de-registers interface as MPLS

Last Modified

Feb 12, 2018

Products (8)

  • Cisco Nexus 7000 Series Switches
  • Cisco Nexus 7000 10-Slot Switch
  • Cisco Nexus 7000 4-Slot Switch
  • Cisco Nexus 7700 6-Slot Switch
  • Cisco Nexus 7000 18-Slot Switch
  • Cisco Nexus 7700 18-Slot Switch
  • Cisco Nexus 7700 10-Slot Switch
  • Cisco Nexus 7000 9-Slot Switch

Known Affected Releases


Description (partial)

When using 'mpls ldp autoconfig' in ISIS, modifying the 'is-type' can cause an interface to de-register as a MPLS interface even with ISIS enabled on that interface and even though the 'is-type' is permitted.

Modifying the 'is-type' in the ISIS configuration causes an interface to no longer show as a MPLS-enabled interface.


Nexus# show mpls interfaces detail 
Interface Ethernet8/25:
        ldp enabled
        MPLS operational
        Label space id 0x10000001
        MPLS sub-layer Ethernet8/25-mpls layer(0x26000001)


Nexus# show mpls interfaces detail
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