daisy chaining cisco 3560 and SFP ports

[mtnhigh]

I have 3 cisco 3560 switches that are daisy chained via port 48 on each switch. Can I use the SFP port to daisy chain with switches together instead of the port 48. I am looking for a way to link these switches together more effectively

 

[burtsbees]

Yes. Depending on how they are routing and doing vlans (l2 or l3), the trunks need to be configured as such.

/

tim@tim-laptop ~ $ sudo apt-get install windows
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Couldn't find package windows...Thank Goodness!

 

[VinceWhirlwind]

Are they Gb ports?

If port 48 and the SFP port are the same speed, then it doesn't really help.

What you should try is etherchanneling:

http://www.cisco.com/en/US/docs/swi.../12.2_35_se/configuration/guide/swethchl.html

Basically, it's very simple:
In addition to the existing link between switches, you patch in a second link between each switch.
Then you get on each pair of interfaces on each switch, eg:
(ports 45&46 on switch1 connect to 47&48 switch2, 45&46 on switch 2 connect to 47&48 on switch3, 45&46 on switch3 connect to 47&48 on switch1)
Switch1(config)# interface range g0/45 -46
Switch1(config-if-range)# channel-group 2 mode on
Switch1(config)# interface range g0/47 -48
Switch1(config-if-range)# channel-group 3 mode on

Switch2(config)# interface range g0/45 -46
Switch2(config-if-range)# channel-group 3 mode on
Switch2(config)# interface range g0/47 -48
Switch2(config-if-range)# channel-group 1 mode on

Switch3(config)# interface range g0/45 -46
Switch3(config-if-range)# channel-group 1 mode on
Switch3(config)# interface range g0/47 -48
Switch3(config-if-range)# channel-group 2 mode on