We have recently installed an 801 ISDN router.....using the Fast Start utility to configure.....we have 3 PC's and the router on a small LAN, the router is set-up to connect to an ISP and provide Internet access for the PC's.....we can start IE on the PC's and connect to various sites with no problems, after approx. 2 minutes the IE "sessions" begin getting the "Unable to connect to site etc..." msg.....if we wait for a few minutes the sessions appear to restart....???? During this time we are unable to ping across the ISDN.....both the LAN and ISDN Channel lights remain lit and occasionally the RX and TX lights on both light to indicate some sort of activity......???? Any ideas.....????
Try debugging the isdn (debug isdn q931 and/or debug isdn q921) to see if something is happening to the isdn link.
I think that you are facing a link up-link down maybe due to inactivity on the isdn link. I suppose you have configured an acl that "tells" your router when to trigger the isdn connection. If you browse the internet, you will trigger the isdn connection but if you don't "generate" any traffic during some period (timeout), the link will go down and will go up when you "generate" any interesting traffic again. I think that this period is that you refered as "During this time we are unable to ping across the ISDN....." and "if we wait for a few minutes the sessions appear to restart", just because the isdn connection is again established.
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.