connection between 2pcs sg300 switches 100baseT turns not up and running

[kaspar]

Hi

have 2 sg300

following config on both gig 10 if:

!

interface gigabitethernet10

description Uplink

channel-group 1 mode on

!

interface Port-channel1

description Uplink

switchport trunk allowed vlan add 2-3

!

when patchcable (2 Pairs, pin 12, 36) is connected on both ports, nothing happen, no status

when i connect to other devices with the same cable, port operate within seconds as 100mbit port

same when i try on other switch ports on both switches... never got ports up and running....

thanks in advance

kaspar

[balaji.bandi]

here is the config ( make sure it admin up)

https://www.cisco.com/c/en/us/support/docs/smb/switches/cisco-small-business-200-series-smart-switches/smb97-link-aggregate-group-lag-configuration-on-200-300-series-man.html

I know you have mentioned one of the port connected to device it was up on the port ? is this port part of port-channel ?

[kaspar · Accepted solution]

thanks

i fixed it...

according the guidelink you sent ( thanks @balaji.bandi) i was able to figure out that i have to configure speed like this:

!
interface gigabitethernet10
description Uplink
channel-group 1 mode on
!
interface Port-channel1
speed 100
no negotiation
description Uplink
switchport trunk allowed vlan add 2-3

!

now its working... ;-)

[balaji.bandi]

Glad it worked and helpfull, can you mark as solution now.