I noticed that when creating Etherchannel it automatically creates it in VLAN 1. Is there a way to create Etherchannel in a diferent VLAN? If so, could you please list the steps in order to so?
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Etherchannel Configuration
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I haven' t tried this before today. OK...so the end result is it will not work!
I created the LACP port-channel 1 on SW1 then changed it to an access port. It went down and came back up. I assigned it to vlan 10 and surprise to me, it worked!
Group Port-channel Protocol Ports ------+-------------+-----------+----------------------------------------------- 1 Po1(SU) LACP Gi0/0(P) Gi0/1(P)Then I added it to vlan 10. It went crazy and I thought it's done...and verified it by a
show vlan briefSW1(config)#int port-channel 1 SW1(config-if)#switchport access vlan 10 % Access VLAN does not exist. Creating vlan 10 SW1(config-if)# *Jan 7 10:26:48.701: %LINK-3-UPDOWN: Interface Port-channel1, changed state to down *Jan 7 10:26:49.701: %LINEPROTO-5-UPDOWN: Line protocol on Interface Port-channel1, changed state to downdo show vlan *Jan 7 10:26:55.660: %LINK-3-UPDOWN: Interface Port-channel1, changed state to up *Jan 7 10:26:56.524: %CDP-4-NATIVE_VLAN_MISMATCH: Native VLAN mismatch discovered on GigabitEthernet0/0 (10), with SW2 GigabitEthernet0/0 (1).brief VLAN Name Status Ports ---- -------------------------------- --------- ------------------------------- 1 default active Gi0/2, Gi0/3, Gi1/0, Gi1/1 Gi1/2, Gi1/3, Gi2/0, Gi2/1 Gi2/2, Gi2/3, Gi3/0, Gi3/1 Gi3/2, Gi3/3 10 VLAN0010 active Po1So...I thought wow...I didn't think it would work....well actually it didn't.
I did the same thing on SW2...and no go
SW2(config-if-range)#switchport mode access SW2(config-if-range)# *Jan 7 10:27:28.298: %CDP-4-NATIVE_VLAN_MISMATCH: Native VLAN mismatch discovered on GigabitEthernet0/0 (1), with SW1 GigabitEthernet0/0 (10). *Jan 7 10:27:28.364: %EC-5-CANNOT_BUNDLE2: Gi0/0 is not compatible with Gi0/1 and will be suspended (trunk mode of Gi0/0 is access, Gi0/1 is dynamic) *Jan 7 10:27:28.372: %EC-5-COMPATIBLE: Gi0/0 is compatible with port-channel members *Jan 7 10:27:30.344: %CDP-4-NATIVE_VLAN_MISMATCH: Native VLAN mismatch discovered on GigabitEthernet0/1 (1), with SW1 GigabitEthernet0/1 (10). *Jan 7 10:27:30.371: %LINK-3-UPDOWN: Interface Port-channel1, changed state to down *Jan 7 10:27:31.371: %LINEPROTO-5-UPDOWN: Line protocol on Interface Port-channel1, changed state to down *Jan 7 10:27:36.098: %LINK-3-UPDOWN: Interface Port-channel1, changed state to up *Jan 7 10:27:37.100: %LINEPROTO-5-UPDOWN: Line protocol on Interface Port-channel1, changed state to up SW2(config-if-range)# SW2(config-if-range)# SW2(config-if-range)#switchport access vlan 10 % Access VLAN does not exist. Creating vlan 10 SW2(config-if-range)#do sho *Jan 7 10:27:59.648: %EC-5-CANNOT_BUNDLE2: Gi0/0 is not compatible with Gi0/1 and will be suspended (access vlan of Gi0/0 is 10, Gi0/1 is 1) *Jan 7 10:27:59.656: %EC-5-CANNOT_BUNDLE2: Gi0/0 is not compatible with Po1 and will be suspended (access vlan of Gi0/0 is 10, Po1 is 1) *Jan 7 10:27:59.656: %EC-5-CANNOT_BUNDLE2: Gi0/0 is not compatible with Po1 and will be suspended (access vlan of Gi0/0 is 10, Po1 is 1) *Jan 7 10:27:59.656: %EC-5-CANNOT_BUNDLE2: Gi0/1 is not compatible with Po1 and will be suspended (access vlan of Gi0/1 is 10, Po1 is 1) *Jan 7 10:28:00.646: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/0, changed state to downw r *Jan 7 10:28:00.653: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/1, changed state to down *Jan 7 10:28:01.654: %LINK-3-UPDOWN: Interface Port-channel1, changed state to down *Jan 7 10:28:02.654: %LINEPROTO-5-UPDOWN: Line protocol on Interface Port-channel1, changed state to down % Ambiguous command: "do show r" SW2(config-if-range)# SW2(config-if-range)#do show vlan brief VLAN Name Status Ports ---- -------------------------------- --------- ------------------------------- 1 default active Gi0/2, Gi0/3, Gi1/0, Gi1/1 Gi1/2, Gi1/3, Gi2/0, Gi2/1 Gi2/2, Gi2/3, Gi3/0, Gi3/1 Gi3/2, Gi3/3 10 VLAN0010 active Gi0/0, Gi0/1 1002 fddi-default act/unsup 1003 token-ring-default act/unsup 1004 fddinet-default act/unsup 1005 trnet-default act/unsup SW2(config-if-range)#do show etherchannel summary Flags: D - down P - bundled in port-channel I - stand-alone s - suspended H - Hot-standby (LACP only) R - Layer3 S - Layer2 U - in use N - not in use, no aggregation f - failed to allocate aggregator M - not in use, minimum links not met m - not in use, port not aggregated due to minimum links not met u - unsuitable for bundling w - waiting to be aggregated d - default port A - formed by Auto LAG Number of channel-groups in use: 1 Number of aggregators: 1 Group Port-channel Protocol Ports ------+-------------+-----------+----------------------------------------------- 1 Po1(SD) LACP Gi0/0(s) Gi0/1(s) -
Is it not possible to create Etherchannel on any other VLAN except for VLAN 1? I thought that we never wanted to use VLAN 1 for any traffic due to security?
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Not for trunking traffic you cannot. By nature, etherchannel spans all VLANs.
But Anthony reminded me that you can do this on a single switch for a connection to a server (e.g. Cisco UCS) for combined bandwidth. So that's why it worked on one but not for another.
We do not want to use VLAN 1 if we leave it as the native vlan. But with 802.1q, you can reconfigure another vlan to be the native vlan. So it's not so much that it's the
1that matters but that by defaultVLAN1is the native vlan. Hope that makes sense. -
Thank you Ronnie...now I understand.
