While tracking down a problem which seems to be unique to 7910s, I noticed that all our 7910s autonegotiate 10/half with the 3524s; 7940s and 60s run at 100/full. The 7910 Data Sheet doesn't mention anything about this; are these really half-duplex devices, or can I force 100Mbps/full on the switch?
We don't have those issues, but another transient bug we're trying to trap. I didn't want to confuse the test/trap we've set up, so haven't tried to force the phone to 100/full (or even 10/full), but according to the docs
Step 3 Scroll (using the volume up/down keys) to SW Port Configuration.
Step 4 Press * to enter edit mode.
Step 5 Press the volume down button to scroll down through options.
Options are AUTO, 10HALF, 10FULL, 100HALF, and 100FULL.
Step 6 Select an option, then press the volume up button to exit this menu.
Step 7 Press # to save this change.
...however, this wouldn't be the first time the docs have been wrong. I'll try it with another phone and post the results here. (It's a long walk through cold rain today to get another phone, so maybe tomorrow.)
On the _other_ other hand, the label on the phone says "10MBSwitch".
I suspected that; thanks. I guess it's no big deal -- in a very early test of VoIP, we ran a 7960 at 10/half on a 24-port 10MB hub shared with 23 active PCs, then via a private FR WAN link to the Internet with no QOS to a remote site. Consensus was the phone sounded like a bad cellphone, but it was usable.
Depending on the model 7910G and 7910G+SW you either get a 1 port 10T for the phone or a 2 port 10T for phone and a 100T to plug your computer into and run it thru the phone. The 7910 is still only a 10basedT phone.
Thanks, Marc... that certainly isn't obvious from reading the article (or any other Cisco documentation, for that matter), but it's good to know. We've got one lab running off a 100Mbs switch (not a 10/100 switch), and if we had elected to install a 7910 there, we might have run into problems. Do you know what forwarding method the switch in the 7910+SW uses? I wonder if that phone would work on a 100Mbs (only) link.
For anyone interested... the problem I referred to in my initial post was that several of our 7910s would show up as Not Registered, wwith their displays blank, after a random period of normal operation.
It turns out that when the 3524-PWR-XL goes through a power off/on cycle lasting more than a few seconds, any 7910s attached to and powered by the 3524 will not power up properly unless the switchport is explicitly configured as 10/Half. The phone can only be brought up by unplugging/replugging it, or remotely via a shut/no shut sequence.
Now the question arises: Since a 10Mbps switchport is nontrunking, how do I configure things to ensure proper COS for a 7910? I'm rapidly deciding the 7910 is a sorry excuse for an IP phone.
The short answer is that you don't.... That isn't entirely true while at
the same time it kind of is, but for the most part you don't configure
the softkeys. You enable or disable them via TCL. Here is the long
answer. Be sure to read the whole thing or e...
Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...
This document describe how DST changes and how time changes are
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setting the clocks forward 1 hour from standard time during the summer
months, and back again in the fall, in order to make b...