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Is it possible to do a loopback test with a Compatible Systems router?

April 26, 2017compatible loopback possible Router SYSTEMS Test

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Is it possible to do a loopback test with a Compatible Systems router?

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A. Routers do not typically do loopbacks. That is a CSU/DSU function, but if the CSU/DSU has a DTE loopback mode and can pass the clocking off of the line (or provide their own), you can view the router log and see if the router gets back what it sends. Set the log level to Debug since this provides you with the most information. There is a way you can tell whether packets make a round trip between two routers. Bring up the router log at your end and watch it as the modem or CSU at the other end is set to loop packets back to you. You see this: Notice +0.1: Wan1: scr(lcp) id 128 (Send Configure Request, id 128) Info +0.2: mru=1724 magic=0xb8442f28 pfc acfc It is followed by this: Notice +0.1: Wan1: rcr(lcp) id 128 (Receive Configure Request, same id) Info +0.2: mru=1724 magic loopback=0xb8442f28 pfc acfc This is the same packet you sent that is looped back to you. Your router sees this and inserts the word “loopback” after “magic.” If the loopback worked correctly, the “magic loopback”