Switches, Hubs, and Modems
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Switch to Switch Connection

Occasional Visitor

Switch to Switch Connection

Hi guys, this is my first post so sorry if its in the wrong forum.


I've got 2 switches, a 2626-PWR and a 2910al-24G-PoE and I have an issue getting them to connect over a 1000mbps connection.


Firstly, Ive tried this with multiple cables, and cable tested them so I'm sure there's no issue there.


The 2626 is in port 25 going to port 5 on the 2910.  If I have both ports "speed-duplex auto" they do not communicate. If I force either to "speed-duplex auto-100" they connect fine at 100mbps. Also if I force both to auto-1000 they do not communicate.


The running config settings are as follows: 


fault-finder bad-driver sensitivity high
fault-finder bad-transceiver sensitivity high
fault-finder bad-cable sensitivity high
fault-finder too-long-cable sensitivity high
fault-finder over-bandwidth sensitivity high
no fault-finder broadcast-storm
fault-finder loss-of-link sensitivity high
fault-finder duplex-mismatch-HDx sensitivity high
fault-finder duplex-mismatch-FDx sensitivity high
console baud-rate 115200
dhcp-snooping authorized-server x.x.x.x
dhcp-snooping authorized-server x.x.x.x
dhcp-snooping vlan 1-12
timesync sntp
ip route x.x.x.x
snmp-server community "public" unrestricted
snmp-server contact "x@x.com"
password manager