Cisco Bug: CSCul68786 - protect LC interface changed state to down after LC SO w/ pre-config CLI
Jan 29, 2017
- Cisco uBR10000 Series Universal Broadband Routers
Known Affected Releases
12.2(33)SCH2 12.2(33.1) 15.3(3)S
Symptom: The protect line card interface state changes to "down" after line card switchover. Conditions: This issue occurs after line card switchover. Steps to reproduce the issue: Require two working line cards with modems that are online and one protect line card. For example, line cards in 5/0 and 7/0 are working line cards and line card in 5/1 is the protect line card. 1. Configure line card group as below: redundancy linecard-group 1 cable rf-switch name 1 rfsw1 rf-switch name 2 rfsw2 member subslot 5/0 working member subslot 5/1 protect member subslot 7/0 working member subslot 5/1 protect config 5/0 ====>This issue occurs when this configuration exists. interface Cable5/0/0 ... cable upstream 0 connector 0 cable upstream 0 frequency 10800000 cable upstream 0 channel-width 3200000 3200000 cable upstream 0 docsis-mode tdma cable upstream 0 minislot-size 2 cable upstream 0 range-backoff 3 6 cable upstream 0 modulation-profile 21 cable upstream 0 rate-limit token-bucket cable upstream 0 equalization-coefficient cable upstream 0 rate-adapt cable upstream 0 attribute-mask 20000000 no cable upstream 0 shutdown ====> Ensure that the preconfig line card upstream x is "no shutdown". ... end 2. Line card switches over from 5/0 and reverts back. All modems are still online. 3. Line card switches over from 7/0. No modems on 5/1 are available in the "show cable modem" command output. 4. Revert back 7/0, modems go online again.
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