[cisco-voip] Half duplex, inline power, 4507R problem

[Lelio Fulgenzi]

We had a building that we had to upgrade to VOIP but did not have a chance to upgrade the wiring to Cat5e standards. With things set to auto, the port and nic would negotiate to 100FULL but things would fail because the wire could not support the b/w. By setting the ports to 10/half, the phones would auto-negotiate the speed and default to half-duplex. Unfortunately, a port will not auto-negotiate duplex when the other side is manually set, so the ports have to be set to half. Or so we found anyways.

--------------------------------------------------------------------------------
Lelio Fulgenzi, B.A.
Network Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 
Sanity First : Number of days with fewer than
50 messages in my inbox at the end of the day:         14
  ----- Original Message ----- 
  From: Voll, Scott 
  To: Mike Mike ; Wydra, Jason 
  Cc: cisco-voip at puck.nether.net 
  Sent: Wednesday, March 15, 2006 4:10 PM
  Subject: Re: [cisco-voip] Half duplex, inline power, 4507R problem


  With that all being said, Why would you run a IP Phone at half, let alone 10 half?

   

  Scott

   


------------------------------------------------------------------------------

  From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Mike Mike
  Sent: Wednesday, March 15, 2006 12:45 PM
  To: Wydra, Jason
  Cc: cisco-voip at puck.nether.net
  Subject: Re: [cisco-voip] Half duplex, inline power, 4507R problem

   

  There is a bug related to this when using 10M Full mode: CSCdz65458. Maybe it is the 10M that is messing you up.  Check it out.

  Mike

  On 3/15/06, Wydra, Jason <jwydra at burwood.com> wrote:

   

  Anyone have an idea why a 4507R switch with a WS-X4148-RJ45V line card might have a problem supplying inline power to a 7940G while in 10M/Half duplex mode? Works fine with 100M/Full.

   

  Thanks,

  Jason


  _______________________________________________
  cisco-voip mailing list
  cisco-voip at puck.nether.net
  https://puck.nether.net/mailman/listinfo/cisco-voip



   



------------------------------------------------------------------------------


  _______________________________________________
  cisco-voip mailing list
  cisco-voip at puck.nether.net
  https://puck.nether.net/mailman/listinfo/cisco-voip
-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://puck.nether.net/pipermail/cisco-voip/attachments/20060315/0cc98de3/attachment.html