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Serial line is up & then line reset

I am setting an anlogue lease line. When i put encapuslation ppp my serial goes up then resets. i have configured the asyncronous , Physical -layer on my serial. When i change encasulation to slip the serial line goes up and line protocol up but the ping is not successful. advise.

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Anonymous
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Re: Serial line is up & then line reset

I think you are missing some parameters. One of the most important parameter is in the line mode for the respective async interface. configure the follwoing while you have configured for encapsulation PPP.

Router(config)#modemcap entry default

router(config)#line 2

router(config-line)#modem autoconfigure type default

dont mispell the word - default

And also check for any "PPP authentication chap" you have configured . If you have configured for PPP authentication , you have to configure the following on both the routers

router(config)#username xxxxx password xxxxx

Usually username is the hostname of the opposite router .

Use debug dialer and debug ppp negotiation commands to troubleshoot.

Also check the following URL and check for Router2 configuration for any parameters you are missing in your config. Dont check the Router1 configuration which will not be applicable for you.

http://www.cisco.com/warp/public/793/access_dial/multilink_2serial_async.html

http://www.cisco.com/warp/public/76/9.html

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fdial_r/drfchcp.htm#xtocid1

Hope this helps.

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