[cisco-nas] AS5400 resetting when pri-group is removed.

[Joseph Mays]

Having a strange problem with an AS5400. Trying to change the number of 
channels in a pri-group. When we remove the pri-group...

"no pri-group timeslots 1-23 nfas_d primary nfas_int 0 nfas_group 1 iua 
xxxgroupname"

The system resets. Here's the "show ver" after a reset.

Cisco Internetwork Operating System Software
IOS (tm) 5400 Software (C5400-JS-M), Version 12.3(6a), RELEASE SOFTWARE 
(fc4)
Copyright (c) 1986-2004 by cisco Systems, Inc.
Compiled Fri 02-Apr-04 17:47 by kellythw
Image text-base: 0x60008AFC, data-base: 0x61980000

ROM: System Bootstrap, Version 12.1(2r)XD1, RELEASE SOFTWARE (fc1)
BOOTLDR: 5400 Software (C5400-BOOT-M), Version 12.3(1a), RELEASE SOFTWARE 
(fc1)

NW5400A uptime is 21 minutes
System returned to ROM by bus error at PC 0x60374FEC, address 0xD0D0E05 at 
10:13:37 UTC Mon Aug 2 2010
System image file is "flash:c5400-js-mz.123-6a.bin"

cisco AS5400 (R7K) processor (revision T) with 524288K/65536K bytes of 
memory.
Processor board ID JAB043902VQ
R7000 CPU at 250MHz, Implementation 39, Rev 1.0, 256KB L2, 2048KB L3 Cache
Last reset from warm-reset
Bridging software.
X.25 software, Version 3.0.0.
SuperLAT software (copyright 1990 by Meridian Technology Corp).
TN3270 Emulation software.
Primary Rate ISDN software, Version 1.1.
Manufacture Cookie Info:
 EEPROM Type 0x0001, EEPROM Version 0x01, Board ID 0x31,
 Board Hardware Version 3.27, Item Number 800-5171-01,
 Board Revision B0, Serial Number JAB043902VQ,
 PLD/ISP Version 2.2,  Manufacture Date 20-Sep-2000.
Processor 0x14, MAC Address 0x02FD653658
Backplane HW Revision 1.0, Flash Type 5V
2 FastEthernet/IEEE 802.3 interface(s)
222 Serial network interface(s)
384 terminal line(s)
9 Channelized T1/PRI port(s)
1 Channelized T3 port(s)
512K bytes of non-volatile configuration memory.
65536K bytes of processor board System flash (Read/Write)
8192K bytes of processor board Boot flash (Read/Write)

Configuration register is 0x2102