We recently setup this switch to enable gigabit networking, but have had to set all ports to speed 100 after repetitive failures to negotiate connecting ports. On the connecting ports, the machines negotiate a link, then drop the link, negotiate a link, then drop the link, etc. This has happened on several different connecting ports. Is there anything that is misconfigured on the switch that may cause this occur? We have tried manually setting speeds on both the switch and the connecting port and are still unable to establish a connection other than 100mb/s. Please advise.
We recently also installed a 3750 that had the same problem. Unfortunately I am not aware of IEEE standards regarding autonegotiation, so these problems arise when different manufacturers try to autonegotiate. I was using my 3750 specifically to connect IBM servers with Gig NICs to my network. I had the same dropping issue until I changed both the port AND the server NIC to 1000Mbps and FULL duplex. The default for the ports is half duplex at 10/100Mbps. When I did this, the port would go orange for the 30 seconds to establish the connections, then be steady green and the link at the server was stable. Hope that helps.
This document gives several answers on frequently asked questions for PFRv3 channel state behavior.
Q1: What are all the channel operational states from a BR (border role) perspective and what are the rules/conditions to be in each st...
The need was to reach an host inside a LAN through a VPN connection managed by the LAN gateway (Cisco 1921).
The LAN gateway performs NAT and there was a dedicate nat rule for the host i wanted to reach through VPN.
I couldn't connect to the hos...
We have 3 identical switches configured by someone else and would like to claim some of the Gigabit ports(G1/G2/G3/G4) for use on servers. When we try to change the wiring and configuration, we run in to connectivity issues. Attached is a des...