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Link light is green on SSG's serial1/1 port, but the 'link' and 'protocol' are down



Article ID: KB8403 KB Last Updated: 31 Aug 2010Version: 3.0

Link light is green on SSG's s1/1 port, but the 'link' and 'protocol' are displayed as down in the 'get int s1/1'  command output.
When the command 'unset interface s1/1 encap ppp'  is run, then the 'link' and 'protocol' come up.
Therefore, PPP won't start negotiating on the s1/1 (WAN interface).


Make sure you create a PPP profile, specify encap PPP, and bind the PPP profile to the interface s1/1.

Here's an example of configuring PPP on a single WAN interface:

set ppp profile test static-ip          (create a PPP profile)
set interface s1/1 encap ppp
set interface s1/1 ip
set interface s1/1 ppp profile test      (binds PPP profile to interface and then starts to negotiate)
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