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Cisco Bug: CSCsy79291 - WAN IP uplink failure when upgrading from 12.3(23)BC6 to 12.2(33)SCBx

Last Modified

Feb 02, 2017

Products (1)

  • Cisco uBR10000 Series Universal Broadband Routers

Known Affected Releases

12.2(33)SCB 12.3BC

Description (partial)

None
Symptom:
When upgrading from 12.3(23)BC6 to 12.2(33)SCB or 12.2(33)SCB1, ip connectivity is lost due to the
MAC address of the WAN uplink port from a HHGE card is changed. That is, before the upgrade when
it's on 12.3(23)BC6, the MAC address of say int gig x/y/z is set to a specific unique MAC. Then
after the upgrade to SCB or SCB1, the last two values of the MAC address is changed to something
else for the same WAN uplink port.

Also, if the IOS is already on 12.2(33)SCB and upgrading to 12.2(33)SCB1, the MAC address of the WAN
uplink port on HHGE doesn't change. IP connectivity still functions.


Conditions:
When the 10K is on 12.3(23)BC6, check the MAC address for the uplink interface of the HHGE card.
Also verify what the arp entry is from the upstream connected router.
Upgrade to 12.2(33)SCB or 12.2(33)SCB1.
Check the current MAC address of the HHGE WAN uplink port and compare to previous MAC address.
Also, check the current MAC address (via arp) from the upstream connected router and compare.
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