[c-nsp] Etherchannel Question

[James Bensley]

Hi List,

I've been Google'ing around for the answer but I can't find it. I
logged into a switch today and this is a snippet of the output from
'show etherchannel summary';

Group  Port-channel  Protocol    Ports
------+-------------+-----------+-----
2      Po2(SU)         LACP      Gi0/45(P)   Gi0/46(P)
3      Po3(SD)         PAgP      Gi0/13(D)   Gi0/14(I)
4      Po4(SD)         PAgP      Gi0/15(I)   Gi0/16(I)

Channel 2 is clearly up and running, but I don't understand the output
of 3 and 4. D means down which is simple enough ('show ip int br'
confirms Gi0/13 is down). I means 'stand-alone'. Its this that I can't
find out, what does 'stand-alone' mean and why would these ports say
that? Can anyone here explain why?

show ver;
.....
Model number                    : WS-C2960G-48TC-L

-- 
James.
http://www.jamesbensley.co.cc/