Sometimes, upstream bonding enters partial bonding while reverting to the original CLC after switchover.
In the following example, the switchover is performed between CLC in slot 1 and 0. After reverting to CLC in slot 1, C1/0/3/UB
turns to C1/0/3/p. The following output highlights the change:Router# show cable modem
Load for five secs: 1%/0%; one minute: 2%; five minutes: 2% Time source is NTP, 13:00:25.570 UTC Thu Feb 18 2016
D
MAC Address IP Address I/F MAC Prim RxPwr Timing Num I
State Sid (dBmv) Offset CPE P
4844.8789.e0fc 10.78.100.6 C1/0/0/UB w-online 6 -0.50 1787 0 N
c8fb.2639.33d0 10.78.100.7 C1/0/1/UB w-online 1 -1.00 1793 0 N
4844.8789.e10e 10.78.100.10 C1/0/2/UB w-online 1 -0.50 1784 0 N
602a.d0a2.9b3e 10.78.100.11 C1/0/3/p w-online 4 1.50 1789 0 N
0025.2ecf.f922 10.78.100.8 C1/0/4/UB w-online 1 -1.00 1788 0 N
This partial bonding can be recovered using the shutdown and no shutdown commands on the related upstream port under the controller. The following is a sample configuration:
Router(config)# controller Upstream-Cable 1/0/3
Router(config-controller)# us-channel 0 shutdown
Router(config-controller)# no us-channel 0 shutdown