This is one of multiple GNS3 labs videos. In this video we troubleshoot a PPP Mulitlink issue.

=========================================== Tasks:

Troubleshoot the network.

=========================================== IOS used: c3725-adventerprisek9-mz.124-15.T14.bin

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=========================================== GNS3 Topology:

https://goo.gl/Yeea9P

=========================================== Resources:

http://www.cisco.com/c/en/us/support/docs/wan/point-to-point-protocol-ppp/10313-config-pap.html http://www.cisco.com/c/en/us/support/docs/wan/point-to-point-protocol-ppp/25647-understanding-ppp-chap.html ... https://www.youtube.com/watch?v=KNf_sTxlqtE