877 ADSL

I have just loaded an 877 with 15.1 IOS

c870-advsecurityk9-mz.151-4.M1.bin

the config is the same as i was using with 12.4


If the is no traffic through the modem for about 10 mins the ATM seems
to go to sleep.

ping atm int a0 0 34 seg give no response

I can issue the " shut" "no shut" command to int ATM0 but this doesnt
help.

Also tried disconnecting the DSL cable waiting 1 minute then plugging
back in

Only way to get the ATM working is to reload the 877

With 12.4 i didnt have this problem, and i had ADSL firmware 4.0.15
loaded (adsl_alc_20190.bin)

Is there something new in 15.1 i am missing to keep it alive
constantly


interface ATM0
description Physical ADSL (ATM) interface
no ip address
no atm ilmi-keepalive
!
interface ATM0.1 point-to-point
description Virtuele ADSL sub-interface
ip address dhcp
ip nat outside
ip virtual-reassembly in
atm route-bridged ip
pvc 0/34
encapsulation aal5snap

 

Upadate:

I found the the 877 just randomly hangs a hard reset is need to get
the ADSL working again.

I returned to 12.4(24) and so far it works fine again


Looks like 15.1 needs a lot of working on. I'll wait a few month and
try a newer version and trst that.

If any Cisco firmware guys read this and want more info i'll be only
too happy to help.

 

Hi,

Interesting ...

Find below cropped output of my 876W. Never had this problem. I'm running it this way for months.

Andre


System image file is "flash:c870-adventerprisek9-mz.151-4.M.bin"
Cisco 876W (MPC8272) processor (revision 2.0) with 236544K/25600K bytes of memory.
53248K bytes of processor board System flash (Intel Strataflash)

 

I am using 15.1(2)T1 and 4.0.210 ADSL firmware and it is fine. I do
have maxed out RAM fitted, so maybe 15.1 needs more RAM?