10-24-2005 09:31 AM - edited 03-03-2019 12:32 AM
I have a 6513 witha sup720. I want to configure the gig ports (7/1 and 7/2) as trunk ports to connect to a 6509 with a sup2 cards. Does anyone know how to do this? Do I need to configure port-channels
10-24-2005 10:23 AM
In Cisco's terminology, trunking refers to the concept of links carrying multiple vlans across whereas channelling refers to bundling the links to behave as a single logical interface.
I am aware that other vendors out there sometimes call 'trunking' for what we call channelling and that MAY result in some confusion in the field.
So, in your case, you dont 'need' to configure port-channels on your two cat6k boxes but be aware that if you don't then spanning-tree would see them as individual links and block a port on one link to stop a loop in your L2 network. That is why, you may consider etherchannels also in your deployment.
In a nutshell, trunking can be turned ON by "switchport mode trunk" command under the interface and channelling can be turned on by issuing "channel=group
here are the links:
Channelling:
CATOS:
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/sw_8_4/confg_gd/channel.htm
IOS:
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/122sx/swcg/channel.htm
Trunking
CATOS:
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/sw_8_4/confg_gd/e_trunk.htm
IOS
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/122sx/swcg/layer2.htm
10-24-2005 10:24 AM
hi
you would do something like this
int gi7/1
switcport
switchport trunk enca dot1q
switcport mode trunk
thanks
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