I use isdn for maintenance and backup links and i have noticed recently that if i 'sh int bri0/0' when the lines are up the available bandwith is much less than either the 64k or 128k i would expect. For example when i use one b channel i would expect 64k and the config reflects this. However, the 'available bandwidth' is only 48k.
Similarily, if i dial both b channels i get only 96k.
I would have expected the full bandwidth on both ocassions. Am i mistaken in expecting this ?
Re: ISDN bandwidth - should i get the full 64/128k
No, your interface was running fine at 64K, but for the sake of QoS configuration, by default only 75% of the interface bandwidth is available. In other words if you setup a policy-map and apply it to the interface, the total bandwidth allocations in the policy-map must not exceed 48K, unless you change this behavior by issuing the command mentioned above.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.