Other Network Architecture Subjects

Does anyone know what exactly would cause a T1 serial interface (point to point T1) to be up but with line protocol down (looped)? I am not showing any CSU/DSU errors or loopbacks but the interface is showing this loopback. I seached CCO and have s...

I want to know that the IOS image loaded in my router's flash has file name c2500-jb-........I am confused about this long name file. so is there any site link where can i read this format or convention of cisco IOS images. so that i can understand t...

We're looking for a product recommendation for a dual WAN router which will be able to detect a down primary WAN link (T-1) and provide an intelligent failover to a secondary WAN link (also T-1). If possible, we would also like a product which is cap...

Is it possible to recreate/recover "user defined group" in Campus Manager 3.3 ?Because of some mistake, our customer delete the "/user defined group" in Campus Manager - Administration - Topology Groups, so we cannot add/modify any user define groups...

Does anyone know why there would be a list of incomplete showing up in the arp table. All of the address showing next to these incomplete are valid address of ours, though none of these address are in use by any nodes on are network.Any ideas would b...

Hey All,Quick question regarding the VLAN capabilities of a 2924XL with the enterprise OS. This is a 4MB model.I will have a subnet of 32 addresses (/27) that I will need to VLAN into different subnets on the 2924. The router will be on .1 , and ...

Hi, I bought a cisco 837 router. My adsl connection has a single public IP (82.X.X.130) and also another set of IP addresses from 81.X.X.56 to 81.X.X.63 assigned to it (netmask 255.255.255.248). The java-based configuration utility shipped with the r...

Hello,Could anyone please help explaining about the leased line to me?When people are talking about leased line, are they talking about T1, E1, Frame relay? Are they the same or different?Thank you

I have two routers conected with 3 serial links: - 56Kbps - 12Kbps - 512KbpsI also have Rip going on on the 3 serial interfaces. All the links have the same distance, 1 hop.My question is how can i influence in the router choosing the best route usi...

Hi folks, I'm running into an odd problem involving a new 1711 and the built in WIC-4ESW. I've read some of the other threads on this subject, but mine seems to differ a little bit. I have three separate networks in the same building, each with their...

Has anyone come across the following problem before.Certain connections will intermittantly lockup and not pass traffic across UXM trunks. If rerouted to an alternative path, it starts working again. The trunks in question are error free and other co...

Hi all.In a dialup connection to cisco router(or access routers):If it is possible (for users dialed to router) to diagnostic the phone number of dialers (their's phone num.)?Thanks alot.

I recently configured several 3725 routers with the IP CEF command. When installed, trafffic slowed dramatically, with packets dropping everywhere between these routers.Immediately the command was removed, traffic returned to normal.Does anyone have ...