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Cisco Bug: CSCvi55945 - 8.8:NBN AP Neighbor Info show backhaul CH missing vs. CLI for 40MHz backhaul and Rate mismatched

Last Modified

Sep 27, 2018

Products (1)

  • Cisco 5500 Series Wireless Controllers

Known Affected Releases

8.8(1.84)

Description (partial)

Symptom:
Issue 1,
(tb30-kukri-58) >show mesh backhaul VW-1542-RAP1.6FD0

Current Backhaul Slot(s)......................... 1 

Basic Attributes for Slot  1
    Radio Type................................... RADIO_TYPE_80211ac-5
    Radio Subband................................ RADIO_SUBBAND_ALL
    Mesh Radio Role.............................. DOWNLINK ACCESS
    Administrative State ........................ ADMIN_ENABLED
    Operation State ............................. UP
      Current Tx Power Level .................... 4
      Current Channel ........................... (173,169)
      Antenna Type............................... EXTERNAL_ANTENNA
      External Antenna Gain (in .5 dBm units).... 8

(tb30-kukri-58) >

Backhaul is CH 173,169 because of 40MHz. But on UI AP page, right click on the AP right end to "Neighbor Information", the backhaul radio is showing CH 173 only.

The issue appears to be device issue because:

(tb30-kukri-58) >show mesh  backhaul VW-1542E4-RAP2.6FC8

Current Backhaul Slot(s)......................... 1 

Basic Attributes for Slot  1
    Radio Type................................... RADIO_TYPE_80211ac-5
    Radio Subband................................ RADIO_SUBBAND_ALL
    Mesh Radio Role.............................. DOWNLINK ACCESS
    Administrative State ........................ ADMIN_ENABLED
    Operation State ............................. UP
      Current Tx Power Level .................... 1
      Current Channel ........................... (173,169)
      Antenna Type............................... EXTERNAL_ANTENNA
      External Antenna Gain (in .5 dBm units).... 8

(tb30-kukri-58) >show mesh  neigh detail VW-1542E4-RAP2.6FC8


AP MAC : 00:2C:C8:E0:6F:88  AP Name: VW-1542E2-MAP2-1.7408

backhaul rate auto
FLAGS : 141 UPDATED CHILD 
Neighbor reported by slot: 1
worstDv 0, Ant 0, channel 173, biters 0, ppiters 0
Numroutes 0, snr 69, snrUp 69, snrDown 69, linkSnr 69
adjustedEase 13048576, unadjustedEase 13048576
txParent 0, rxParent 0
poorSnr  0
lastUpdate   1522090474 (Mon Mar 26 18:54:34 2018)
parentChange 1522081352 (Mon Mar 26 16:22:32 2018)
Per antenna smoothed snr values: 0 0 0 0
Vector through 00:2C:C8:E0:6F:88 

(tb30-kukri-58) >

Issue 2, RAP/MAP Mesh page with VHT MCs9 SS2, but CLI showing "auto".

Conditions:
na
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