nanog mailing list archives
Re: POE bump-in-the-wire conversion
From: "Thomas Donnelly" <tad1214 () gmail com>
Date: Fri, 31 Dec 2010 11:42:21 -0600
We have some Aastra 9480i phones that are 802.3 af running off of a cisco 3550 that are Pre-Standard power.
http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps646/prod_qas09186a00800913d3.html"Q. Does the Cisco Catalyst 3550-24 PWR Switch support the 802.3af inline power standard? A. No, this switch supports Cisco Pre-Standard Power over Ethernet. The Catalyst 3750 Series and Catalyst 3560 Series support the Cisco Pre-Standard Power over Ethernet and IEEE 802.3af Power over Ethernet."
I used the command power inline delay shutdown 20 initial 100 on the ports connected to the phones and it seems to be working just fine. It may just be a lucky break for us but something worth trying? -=TomOn Fri, 31 Dec 2010 09:00:40 -0600, Robert E. Seastrom <rs () seastrom com> wrote:
Perhaps someone from this august list can offer a clue here. Have: Cisco 3524-PWR (paleo-POE, pre-802.3af Cisco standard). It runs the 7960Gs great. Have: Wireless AP stuff that wants 12v on the unused pairs for passive POE. 48v will let the magic smoke out. Might buy: phone that does 802.3af Want to run these with the 3524-PWR. I can't imagine that nobody makes a bump-in-the-wire converter for this application, but haven't been able to find anything other than 802.3af to the passive POE use case. Anyone got a pointer for me? Thanks, -r
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Current thread:
- POE bump-in-the-wire conversion Robert E. Seastrom (Dec 31)
- Re: POE bump-in-the-wire conversion Philip Dorr (Dec 31)
- Re: POE bump-in-the-wire conversion Robert E. Seastrom (Dec 31)
- Re: POE bump-in-the-wire conversion Michael Loftis (Dec 31)
- Re: POE bump-in-the-wire conversion Robert E. Seastrom (Dec 31)
- Re: POE bump-in-the-wire conversion Thomas Donnelly (Dec 31)
- Re: POE bump-in-the-wire conversion Philip Dorr (Dec 31)