One of our small sites is using a Cisco Catalyst 3500XL switch (24 Port) for office connectivity. In the past week intermitent network issues have come to light in this office including loss of network shares-printers-Internet.....Investigating further it was noted that users/servers on the switch are experiencing about a 40% packet loss. Connecting to another switch (Baystack 10MBps) had the users/servers at 0% packet loss. Forcing the clients/servers to 10MBps on the Cisco Catalyst gave them 0% packet loss, so the switch has been configured for 10MBps Full Dup vs. auto negotiate. This works fine other than the site being at 10MBps rather than 100MBps. Any known issues with the Auto Negotiate or speed problems at 100MBps?
I have known and seen some issues with the 3500 and auto negotiation. Usually the problem has been with onboard NICs from 3Com 3c509B,C. There is a IOS that helped correct the problem along with the driver update. This has been a big problem and really hit the 3550's hard. But check your drivers, and IOS for NIC compatibility issues. If here everything is ok, then try to find a common among your devices. I have also seen the some older cards just will not work with the 3500's no matter what setting, if you have a hub or a switch between the device and the port it works. Very strange, and no one seems to comment on it. ;-)
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...