When I run the show isdn service command on my Cisco 7206, a large number of the channel states are always stuck in state = 4 (Restart).
router>sh isdn service
PRI Channel Statistics:
ISDN Se3/0:15, Channel [1-31]
Configured Isdn Interface (dsl) 0
Channel State (0=Idle 1=Propose 2=Busy 3=Reserved 4=Restart 5=Maint_Pend)
0 2 2 2 2 2 2 2 2 0 2 2 2 2 2 3 2 2 2 0 0 0 0 2 2 0 2 2 2 2 2
Service State (0=Inservice 1=Maint 2=Outofservice)
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
ISDN Se3/1:15, Channel [1-31]
Configured Isdn Interface (dsl) 1
Channel State (0=Idle 1=Propose 2=Busy 3=Reserved 4=Restart 5=Maint_Pend)
0 0 2 0 2 0 0 2 2 2 2 2 2 0 0 3 2 2 2 2 0 2 4 2 2 0 2 2 2 0 2
Service State (0=Inservice 1=Maint 2=Outofservice)
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
ISDN Se4/0:15, Channel [1-31]
Configured Isdn Interface (dsl) 2
Channel State (0=Idle 1=Propose 2=Busy 3=Reserved 4=Restart 5=Maint_Pend)
0 2 0 2 0 2 2 2 2 2 2 2 0 2 2 3 2 2 2 2 2 2 0 4 0 2 0 0 0 2 2
Service State (0=Inservice 1=Maint 2=Outofservice)
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
ISDN Se4/1:15, Channel [1-31]
Configured Isdn Interface (dsl) 3
Channel State (0=Idle 1=Propose 2=Busy 3=Reserved 4=Restart 5=Maint_Pend)
2 2 0 2 2 0 0 0 0 0 2 0 4 2 2 3 0 2 2 0 2 2 2 2 2 2 2 2 2 2 2
Service State (0=Inservice 1=Maint 2=Outofservice)
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Router>
Gradually, over a period of time most of these channel states read as 4 (Restart), and do not transition to 2 (Busy) or 0 (Idle). The only way I am able to return all the channels back to a state of 0 (Idle), is to shut/no shut the E1 controller.
What could be causing this? Is the an IOS bug? I am using the following IOS version:
router>sh ver
Cisco Internetwork Operating System Software
IOS (tm) 7200 Software (C7200-JS-M), Version 12.1(2)T, RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2000 by cisco Systems, Inc.
Compiled Tue 16-May-00 15:00 by ccai
Image text-base: 0x60008900, data-base: 0x61B76000
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router>
Thanks in advance for your help.
