[nsp] router reboots due to bus error

[Drix Tabligan]

Hi, I'm new at this...

I have an existing setup shown below:


                                      [internet2]
                                             |
[internet1]-a-[router1] -b-[router2]-c-[router3]---[app servers]
                                             |                  |
                                             |           [internet3]
                                             |
                                     [app servers]

Router1 - Cisco7513 / RSP4 Version 12.1(8a)E IOS
Router2 - Cisco7200 / NPE200 Version 12.2(6b) IOS
Router3 - Cisco7576 / RSP2 Version 12.2(6a) IOS

All three routers are in different locations with their own corresponding
internet connections. All are running BGP within and with the Internet using
our own portable address /19 space for the whole network. No fancy
configurations and standard v.35 serial interfaces, Fast Ethernets and
Ethernets. Links "a" and "b" are stable. Link "c" has medium probability of
failure. In order to address the problem, I tried to configure a GRE tunnel
from "router3" via "internet3" to "router2" via "internet2". Source and
destination addresses are the interface addresses given by our upstream
providers. Tunnel comes up ok with both sides of the connection showing
"Tunnel up Protocol up". After assigning ip addresses to both ends of the
connection, pinging the ip address of the other end causes "router3" to
reboot. Reason for reboot "System returned to ROM by bus error at PC
0x603B3884, address 0x104". Is this any known bug on the IOS for "router3".
I'm nearing the situation where I might be upgrading IOS for "router3" in
order to see if it will solve the problem. Any help would be greatly
appreciated or suggestions on what version of IOS to upgrade to would be
great also.

Thanks in advance.

Drix Tabligan
XcelerateCenter.com