I am testing a simple scenario in the LAB. Two routers connected back to back with V.35 serial cables.Routers pinging end to end when serial encapsulation is HDLC or PPP.The line protocol is not coming UP when Encapsulation used on the serial is Frameraelay. The related configuration is as follows.
clock rate 128000
Any idea why this is happening? Am i missing any thing?
JD is right that the best way to do it is to have 3 routers where one of the routers functions as a frame relay switch. I have set it up in the lab with routers back to back and with encapsulation frame-relay (without the third router) so I know it can be done. But it does need to accomodate the need for LMI in Frame Relay and it is a lot more complex that just setting the encapsulation on the interface.
Looking at it from another perspective, both PPP and HDLC are designed to work in back to back connections and do not require a middle device but Frame Relay is designed to have some kind of switch in the middle.
Note that there is a physical DCE and a Frame Relay DCE. The physical DCE is determined by the cable and must supply clock rate. The Frame Relay DCE is a logical assignment indicating who will supply LMI. There is no requirement that the physical DCE must be the logical DCE. So R1 might be configured as physical DCE and R2 be configured as Frame Relay DCE.
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.