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Cisco Bug: CSCtf26326 - CST: ISIS advertises IPC 127.x.x.x address

Last Modified

Oct 16, 2010

Products (1)

  • Cisco uBR10000 Series Universal Broadband Routers

Known Affected Releases


Description (partial)

 When configuring the Cisco CMTS with ISIS, the internal IPC Ethernet address 127.x.x.x is advertised even when no service internal is configured.

This issue is seen even though the "no isis advertise prefix interface" command should have prevented the ISIS from advertising the IP address of the interface. However, in this case, the IPC interface cannot be configured by the end user. Due to the nature of the Ethernet loopback address, it should never be advertised by an IGP.
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