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IP Phones Added to the Community Lab
By stretch | Wednesday, September 22, 2010 at 5:28 p.m. UTC
A reader by the name of Robert Juric generously donated four Cisco 7940 IP phones to the lab! I just finished connecting them to switches S3 and S4 and they're ready for use. I've also updated the lab topology to reflect their addition.
Power is supplied to all four phones by Cisco's legacy (pre-IEEE 802.3af) PoE implementation known as inline power (ILP). The phones have been left with their factory default configurations, which means they will look for IP addresses via DHCP. (Any of the IOS routers can be configured to act as a DHCP server.)
The following outputs were taken from S3.
Switch# show power inline
Available:360(w) Used:12(w) Remaining:348(w)
Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- ------------------- ----- ----
Fa0/1 auto off 0.0 n/a n/a 15.4
Fa0/2 auto off 0.0 n/a n/a 15.4
Fa0/3 auto off 0.0 n/a n/a 15.4
Fa0/4 auto off 0.0 n/a n/a 15.4
Fa0/5 auto off 0.0 n/a n/a 15.4
Fa0/6 auto off 0.0 n/a n/a 15.4
Fa0/7 auto off 0.0 n/a n/a 15.4
Fa0/8 auto off 0.0 n/a n/a 15.4
Fa0/9 auto off 0.0 n/a n/a 15.4
Fa0/10 auto off 0.0 n/a n/a 15.4
Fa0/11 auto on 6.3 IP Phone 7940 n/a 15.4
Fa0/12 auto on 6.3 IP Phone 7940 n/a 15.4
Fa0/13 auto off 0.0 n/a n/a 15.4
Fa0/14 auto off 0.0 n/a n/a 15.4
Fa0/15 auto off 0.0 n/a n/a 15.4
Fa0/16 auto off 0.0 n/a n/a 15.4
...
Switch# show cdp neighbor f0/11 detail
-------------------------
Device ID: SEP0013197E4F88
Entry address(es):
Platform: Cisco IP Phone 7940, Capabilities: Host
Interface: FastEthernet0/11, Port ID (outgoing port): Port 1
Holdtime : 128 sec
Version :
P00307020200
advertisement version: 2
Duplex: full
Power drawn: 6.300 Watts
Management address(es):
Posted in Announcements
Comments
September 23, 2010 at 1:41 p.m. UTC
I hoped you turned the ringers off! :)
September 23, 2010 at 2:39 p.m. UTC
Great, next you can add support personnel whom we can call on a 24 hours basis!
October 18, 2010 at 2:15 p.m. UTC
thanks sir. this is a great help.