Brand new 2960. When I plug a cable into the port, nothing happens. The port light doesn't begin negotiation or anything, it just stays dark. The cable works fine--I have it on another switchport with a crossover connector connecting to a little Cisco SOHO switch without problems.
I've done the following:
switchport mode trunk
switchport trunk allowed vlan 1
In other words, I've fiddled with it. But I don't know why it doesn't light up...
I know this is probably a very easy issue and it's only my inexperience that leaves me lost. Any ideas?
I do a no shut on the interface and I get that Gi0/1 can't be brought up because it failed POST in Loopback test. I also did a sh post and got Failed PortPhyLoopback Packet Test asic_index 0 port_hardware_index 1 in the Loopback Tests portion.
For grins I did what you said -- I configured the port for media rj45. Obviously when I tried the TDR command it said I should no shut the port so that didn't get very far. I also rebooted the switch and saw the failure during the actual POST (after it was ...done Initializing flashfs.).
I can say that my IOS is Version 12.2(44)SE6 though. But should I update it? And if so, I'm actually not sure how!! (Crazy, huh? I've yet to do it for any of my switches or routers...) Note that my switch is the WS-C2960-8TC-L.
OK, I was able to update the IOS to 12.2(55)SE9. I could only use the .bin file though. I couldn't use the archive command -- it's not available in 12.2(44)SE6 -- so I just used copy.
I noticed that the existing image was in a subdirectory (by the same name as the .bin file) in flash. The info file is there as well, and also the html directory. Do these need to be copied to the root of the flash?
Anyway, that didn't fix it. I still get the feedback "%PLATFORM_ENV-3-LOOPBACK_PORT_POST_ERR: Gi0/1 can't be brought up because it failed POST in Loopback test." at the end of the boot process.
Should I try a 15. version of the image? I could probably go back to the vendor since I posted the original question 2 years ago -- they would probably believe me that it was faulty from the start. But if it is just a IOS image problem, I sure would like to avoid that hassle.
BTW. I didn't create a new directory for the new image -- I just put it in the root of the flash. I know it works because I've booted it. But I'm wondering if there's a "best practice" in putting it in its own directory...
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
Manager of IENova, an Oil & Gas company. Currently he works with Cisco
IOS® and Cisco IOS XE platforms, and NX to some extent. He has also
worked as a Senior Engineer with the Routing P...
In this session you can learn more about Layer 3 multicast and the best
practices to identify possible threats and take security measures. It
provides an overview of basic multicast, the best security practices for
use of this technology, and recommendati...