RE: PDU recommendations

[Trey Valenta]

I'll also throw out recommendations for ServTech PDUs. They have an affordable 
line of PDUs with static transfer switches that are particularly attractive for 
all your single-power-supply devices.

Chris Dunn  wrote:

>Been at a place where they have hundreds of APC's in production, all
>monitored and reporting back. Hardly a lick of trouble. 
>Love the fact you can reboot the management interface in the rare case
>there is a hang and it does not affect the status of the outlets.
>-ChrisD.
>
>
>-Original Message-
>From: shawn wilson [mailto:ag4ve...@gmail.com] 
>Sent: Sunday, June 23, 2013 10:38 AM
>To: North American Network Operators Group
>Subject: PDU recommendations
>
>We currently use Triplite stuff but they've got an issue where after a
>few minutes, they stop accepting new tcp connections. We're adding a
>new 30A circuit and I'm thinking of going with APC (ran them in the
>past and never had any issues). However, I figured I'd see if there was
>a better brand / specific model recommendations for quality or bang /
>buck?
>
>Specs: 30A 24+ port 0U, managed (with ssh), lcd use display.

RE: Auto MDI/MDI-X + conference rooms + bored == loop

[Trey Valenta]

I had a similar issue in which someone had accidentally looked a Cisco
VoIP phone back into the network. However, I found it strange how often
this would occur and eventually came across this field notice that might
apply to others on the list:

http://www.cisco.com/en/US/ts/fn/610/fn61863.html

Problem Description
Disconnecting power from a locally powered Cisco IP Phone
connected to a non-Power Over Ethernet (POE) Cisco switch may
expose the customer's network to loop back storms that
destabalize the virtual local area network (VLAN). This exposure
can be mitigated by configuring the switches with automatic loop
detection and port recovery.

Notes indicate this normally applies onto to 10Mb connections, but that
there have been reported cases on a 100Mbit network when the VoIP phone
is connected to a "highly sensitive uplink switch".

Trey


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