Putting Cisco Firewall IOS hangs 2600 Router,Why?

[imran]

I uploaded IP/Firewall IOS 12.0(7)XK1 into 2621 sucessfully thru Cisco Supplied CD after many failed attempts becuase it always hanged during the process!

After I uploaded its configration thru Config Maker with no restrictions,allowing everything.But it did not dial ISDN after it.I am greatly pressurised.Would u help me!

Imran Ahmad Nasir

BE(Electrical),MCP,CCNA,CCDA,CCNP

Network Engineer,Dubai Internet City,UAE

[mkaneko]

Imran,

Did you check the memory requirement for the IOS?

Usually if the device crashes while its upgrading caused by lack of memory present in the device.

[imran]

Thanks a lot for an answer!

I will check it tomorrow in my office.But I uploaded sucessfully,problem is it was unable to dial ISDN.

I appreciate ur cooperation.

Imran