check out if gig link is active to STP!!!!
Date: Wed, 3 Jun 2009 07:50:38 -0700 From: [email protected] To: [email protected] Subject: [OSL | CCIE_RS] IPE vol2 lab 3 Guys, I am having some etherchannel woes. I have the following configuration and have just rebooted the switches to see if that would help. The task is configure L2 etherchannel group on all switches for ports 19-24. So 19-20, 21-22, 23-24 channel-groups 1-3 respectively. I keep seeing spanning tree block when I had thought I would not see this if etherchannel is working correctly. I have configured and re-configured. I verified my configuration and re-booted out of frustration. Can you take a look and see if anything is obvious to you? port configs on all switches: interface FastEthernet0/19 switchport trunk encapsulation isl switchport mode trunk channel-group 1 mode on ! interface FastEthernet0/20 switchport trunk encapsulation isl switchport mode trunk channel-group 1 mode on ! interface FastEthernet0/21 switchport trunk encapsulation isl switchport mode trunk channel-group 2 mode on ! interface FastEthernet0/22 switchport trunk encapsulation isl switchport mode trunk channel-group 2 mode on ! interface FastEthernet0/23 switchport trunk encapsulation isl switchport mode trunk channel-group 3 mode on ! interface FastEthernet0/24 switchport trunk encapsulation isl switchport mode trunk channel-group 3 mode on for example on cat 1 Fa0/19 connected trunk a-full a-100 10/100BaseTX Fa0/20 connected trunk a-full a-100 10/100BaseTX Fa0/21 connected trunk a-full a-100 10/100BaseTX Port Name Status Vlan Duplex Speed Type Fa0/22 connected trunk a-full a-100 10/100BaseTX Fa0/23 connected trunk a-full a-100 10/100BaseTX Fa0/24 connected trunk a-full a-100 10/100BaseTX Gi0/1 disabled 1 auto auto 1000BaseSX SFP Gi0/2 disabled 1 auto auto 1000BaseSX SFP Po1 connected trunk a-full a-100 Po2 connected trunk a-full a-100 Po3 connected trunk a-full a-100 Cat1#sh spann block Name Blocked Interfaces List -------------------- ------------------------------------ VLAN0010 Po2 VLAN0020 Po2 VLAN0030 Po2 VLAN0040 Po2 VLAN0050 Po2 VLAN0060 Po2 Number of blocked ports (segments) in the system : 6 cat 2 Fa0/19 connected trunk a-full a-100 10/100BaseTX Fa0/20 connected trunk a-full a-100 10/100BaseTX Fa0/21 connected trunk a-full a-100 10/100BaseTX Port Name Status Vlan Duplex Speed Type Fa0/22 connected trunk a-full a-100 10/100BaseTX Fa0/23 connected trunk a-full a-100 10/100BaseTX Fa0/24 connected trunk a-full a-100 10/100BaseTX Gi0/1 disabled 1 auto auto 1000BaseSX SFP Gi0/2 disabled 1 auto auto Not Present Po1 connected trunk a-full a-100 Po2 connected trunk a-full a-100 Po3 connected trunk a-full a-100 Cat2#sh spann bloc Name Blocked Interfaces List -------------------- ------------------------------------ VLAN0001 Po2, Po3 Number of blocked ports (segments) in the system : 2 cat 3 Fa0/19 connected trunk a-full a-100 10/100BaseTX Fa0/20 connected trunk a-full a-100 10/100BaseTX Fa0/21 connected trunk a-full a-100 10/100BaseTX Port Name Status Vlan Duplex Speed Type Fa0/22 connected trunk a-full a-100 10/100BaseTX Fa0/23 connected trunk a-full a-100 10/100BaseTX Fa0/24 connected trunk a-full a-100 10/100BaseTX Gi0/1 disabled 1 auto auto Not Present Gi0/2 disabled 1 auto auto Not Present Po1 connected trunk a-full a-100 Po2 connected trunk a-full a-100 Po3 connected trunk a-full a-100 Cat3#sh spann blo Name Blocked Interfaces List -------------------- ------------------------------------ Number of blocked ports (segments) in the system : 0 cat 4 Fa0/19 connected trunk a-full a-100 10/100BaseTX Fa0/20 connected trunk a-full a-100 10/100BaseTX Fa0/21 connected trunk a-full a-100 10/100BaseTX Port Name Status Vlan Duplex Speed Type Fa0/22 connected trunk a-full a-100 10/100BaseTX Fa0/23 connected trunk a-full a-100 10/100BaseTX Fa0/24 connected trunk a-full a-100 10/100BaseTX Gi0/1 disabled 1 auto auto Not Present Gi0/2 disabled 1 auto auto Not Present Po1 connected trunk a-full a-100 Po2 connected trunk a-full a-100 Po3 connected trunk a-full a-100 Cat4#sh spann block Name Blocked Interfaces List -------------------- ------------------------------------ VLAN0001 Po1 VLAN0010 Po1, Po3 VLAN0020 Po1, Po3 VLAN0030 Po1, Po3 VLAN0040 Po1, Po3 VLAN0050 Po1, Po3 VLAN0060 Po1, Po3 Number of blocked ports (segments) in the system : 13 Didn't think spanning-tree would ever affect etherchannel like this, at least from a blocking sense. I have done other configs where stp put the port in err-disabled, but none of my ports are errored out as you can see.. thx guys. Rob Routt _________________________________________________________________ Insert movie times and more without leaving Hotmail®. http://windowslive.com/Tutorial/Hotmail/QuickAdd?ocid=TXT_TAGLM_WL_HM_Tutorial_QuickAdd_062009
