Well you put it on the port-channel. Only one of the links in a port-channel is active in spanning-tree but you don't know which
Switch(config)#int r g0/19-20 Switch(config-if-range)#chan Switch(config-if-range)#channel-group Switch(config-if-range)#channel-group 1 mode on Creating a port-channel interface Port-channel 1 Switch(config-if-range)# *Mar 22 02:40:04.309: %LINK-3-UPDOWN: Interface Port-channel1, changed state to up *Mar 22 02:40:05.315: %LINEPROTO-5-UPDOWN: Line protocol on Interface Port-channel1, changed state to up Switch(config-if-range)#spanning-tree guard root Switch(config-if-range)#do show run int po1 Building configuration... Current configuration : 31 bytes ! interface Port-channel1 end Switch#show spanning-tree interface po1 detail Port 64 (Port-channel1) of VLAN0001 is designated forwarding Port path cost 3, Port priority 128, Port Identifier 128.64. Designated root has priority 32769, address 0019.552f.fb80 Designated bridge has priority 32769, address 0019.552f.fb80 Designated port id is 128.64, designated path cost 0 Hello is pending Timers: message age 0, forward delay 0, hold 0 Number of transitions to forwarding state: 1 Link type is point-to-point by default BPDU: sent 227, received 221 Switch#show span int g0/19 de Port 64 (Port-channel1) of VLAN0001 is designated forwarding Port path cost 3, Port priority 128, Port Identifier 128.64. Designated root has priority 32769, address 0019.552f.fb80 Designated bridge has priority 32769, address 0019.552f.fb80 Designated port id is 128.64, designated path cost 0 Hello is pending Timers: message age 0, forward delay 0, hold 0 Number of transitions to forwarding state: 1 Link type is point-to-point by default BPDU: sent 389, received 383 So root guard is not enabled... you put it on the port-channel! Med venlig hilsen | Best regards Thomas Raabo Senior Network Engineer CCIE #33466 _____________________________________________ [email protected] | Direkte: +45 69 10 60 18 | Tlf.: +45 70 23 55 66 -----Oprindelig meddelelse----- Fra: [email protected] [mailto:[email protected]] På vegne af marc abel Sendt: 12. februar 2012 04:43 Til: [email protected] Emne: [OSL | CCIE_RS] Spanning-tree guard root on etherchannel If you have an Etherchannel and want to use root guard, does the command go on the member links, the etherchannel, or both? _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://onlinestudylist.com/mailman/listinfo/ccie_rs _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://onlinestudylist.com/mailman/listinfo/ccie_rs
