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Cisco Bug: CSCuo36008 - IOM peer connectivity: disconnected due to missing ip address on ppp0

Last Modified

Nov 19, 2020

Products (1)

  • Cisco Unified Computing System

Known Affected Releases

2.2(1c)A

Description (partial)

Symptom:
After reseating the IOM1/1(A), the warning appeared:"peer connectivity: disconnected"

2014 Apr 10 15:02:21  [F0403][warning][equipment-disconnected][sys/chassis-1/slot-2] IOM 1/2 (B) peer connectivity: disconnected
2014 Apr 10 15:08:51  [F0403][cleared][equipment-disconnected][sys/chassis-1/slot-2] IOM 1/2 (B) peer connectivity: disconnected
2014 Apr 10 15:12:23  [F0403][warning][equipment-disconnected][sys/chassis-1/slot-1] IOM 1/1 (A) peer connectivity: disconnected
2014 Apr 10 16:27:42  [F0403][warning][equipment-disconnected][sys/chassis-1/slot-2] IOM 1/2 (B) peer connectivity: disconnected
2014 Apr 10 16:27:42 [F0403][cleared][equipment-disconnected][sys/chassis-1/slot-1] IOM 1/1 (A) peer connectivity: disconnected
2014 Apr 10 16:30:12  [F0403][cleared][equipment-disconnected][sys/chassis-1/slot-2] IOM 1/2 (B) peer connectivity: disconnected
2014 Apr 10 16:33:37 [F0403][warning][equipment-disconnected][sys/chassis-1/slot-1] IOM 1/1 (A) peer connectivity: disconnected


Problem on the ppp link between the 2 IOMs: apparently pppd on IOM B was somehow 'stuck' causing ppp negotiation on IOM A to fail, hence the ppp0 interface on IOM was not configured with an IP address:
IOM A
ppp0      Link encap:Point-to-Point Protocol  
          POINTOPOINT NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:3 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

IOM B
ppp0      Link encap:Point-to-Point Protocol  
          inet addr:127.11.0.2  P-t-P:127.11.0.1  Mask:255.255.255.0
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:12074 errors:0 dropped:0 overruns:0 frame:0
          TX packets:12294 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:3 
          RX bytes:7344256 (7.0 MiB)  TX bytes:7358588 (7.0 MiB)

Conditions:
After reseating the IOM1/1(A), the warning appeared:"peer connectivity: disconnected"
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