i have a 3750 w/ lx gbic connecting to extreme gig switch via single-mode fiber. extreme shows link-light, but i don't see link on my side (3750). are there any gotchas when connecting to extreme? when i connect the same port to a 6509, i'm fine. could there be a duplex/speed issue?
I have run into a similar issue lately with the GBIC on the 3750, the GBICs on the 3750s would not come up. Eventually I tried a shut/no shut, unplugged the other end and then entered into the interface, set the interface to speed/nonegotiate, plugged it back in and it came up. You might want to try this as well, I have unfortunately no explanation for the observed behaviour...
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...