I can't boot my WAP121 over PoE (supplied by Cisco Catalyst WS3550-24PWR).
PWR and LAN link is going up and down periodically (c3550 console message) - flapping. WLAN interface doesn't go up at all.
When connected to external power it works fine. What is important, after WLAN interface goes up, I can disconnect external power and WAP121 continues to work using PoE (so, the problem persists only during startup phase).
I checked this with two different WAP121 - same problem.
So, the whole network is useless - after power down I need to connect external power to each and every AP just for booting :-(
The switch allocates 15.4W per WAP and I've checked only 6W is necessary to power APs... I know CDP could be used to establish PoE dialogue between PSE (power sourcing equipment) and CPE but no idea how to enable CDP on WAP121 (but I don't think I could help at all)?
Any hints about this...???
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Software versions:
WAP121: 1.0.2.3
Catalyst: 12.2(44)SE6
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here is output from Catalyst "show power inline" command (WAP121s connected to FE0/15 and FE0/24):
Available:360(w) Used:30(w) Remaining:330(w)
Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- ------------------- ----- ----
Fa0/1 off off 0.0 n/a n/a 15.4
Fa0/2 off off 0.0 n/a n/a 15.4
Fa0/3 off off 0.0 n/a n/a 15.4
Fa0/4 off off 0.0 n/a n/a 15.4
Fa0/5 off off 0.0 n/a n/a 15.4
Fa0/6 off off 0.0 n/a n/a 15.4
Fa0/7 off off 0.0 n/a n/a 15.4
Fa0/8 off off 0.0 n/a n/a 15.4
Fa0/9 off off 0.0 n/a n/a 15.4
Fa0/10 off off 0.0 n/a n/a 15.4
Fa0/11 off off 0.0 n/a n/a 15.4
Fa0/12 off off 0.0 n/a n/a 15.4
Fa0/13 off off 0.0 n/a n/a 15.4
Fa0/14 off off 0.0 n/a n/a 15.4
Fa0/15 auto on 15.4 Ieee PD 15.4
Fa0/16 off off 0.0 n/a n/a 15.4
Fa0/17 off off 0.0 n/a n/a 15.4
Fa0/18 off off 0.0 n/a n/a 15.4
Fa0/19 off off 0.0 n/a n/a 15.4
Fa0/20 off off 0.0 n/a n/a 15.4
Fa0/21 off off 0.0 n/a n/a 15.4
Fa0/22 off off 0.0 n/a n/a 15.4
Fa0/23 off off 0.0 n/a n/a 15.4
Fa0/24 auto on 15.4 Ieee PD 15.4
