11-01-2018 12:13 PM - edited 03-08-2019 04:31 PM
First off i want to apoligize as i am not a big networking guy but somehow have been tasked with this project.
We have a single connections going from each floor of our building to a central server room. Each floor currently has a single fiber connection " connecting them" i have run Ethernet cable from each switch on said floor back to the core switch in our server room " same one that has the fiber connection running to it". With that being said i have found some configs with the help of good ol google to try and stumble may way through this process but am stuck.
below is a snip bit of the config that i have on the two devices and put onto the appropriate ports on said devices. Any help is greatly appreciated as when i pull the fiber from one of the devices it does not fail over to the other Ethernet connection. Thanks in advance .
#this is added to the switch devices them self
interface Port-channel1
description uplink to 1st floor
switchport trunk allowed vlan 1,70,71
switchport mode trunk
#added to both fiber channels on each switch
interface tengigabitethernet 9/1
description uplink to 1st floor
switchport trunk allowed vlan 1,70,71
switchport mode trunk
channel-group 1 mode on
#added to both ethernet channels on both switches
interface GigabitEthernet 8/31
description uplink to 1st floor
switchport trunk allowed vlan 1,70,71
switchport mode trunk
channel-group 1 mode on
Any help would be greatly appreciated and thanks in advance
Solved! Go to Solution.
11-01-2018 12:30 PM
Hello,
actually you don't need to configure anything on the port channel interface itself. The below should be sufficient:
interface Port-channel1
description uplink to 1st floor
!
interface tengigabitethernet 9/1
description uplink to 1st floor
switchport trunk allowed vlan 1,70,71
switchport mode trunk
channel-group 1 mode on
!
interface GigabitEthernet 8/31
description uplink to 1st floor
switchport trunk allowed vlan 1,70,71
switchport mode trunk
channel-group 1 mode on
11-01-2018 12:30 PM
Hello,
actually you don't need to configure anything on the port channel interface itself. The below should be sufficient:
interface Port-channel1
description uplink to 1st floor
!
interface tengigabitethernet 9/1
description uplink to 1st floor
switchport trunk allowed vlan 1,70,71
switchport mode trunk
channel-group 1 mode on
!
interface GigabitEthernet 8/31
description uplink to 1st floor
switchport trunk allowed vlan 1,70,71
switchport mode trunk
channel-group 1 mode on
11-01-2018 12:44 PM
Hi ,
Thanks for the help just to be clear those should be the only commands i need to get the redundant connection working. just ensure that i apply the lines to the correct device / ports etc.
Thanks
11-01-2018 12:48 PM
Hello,
Exactly, that is all the config you need. Just make sure that you use the exact same config on both devices connected to each other...
11-01-2018 03:12 PM - edited 11-01-2018 03:16 PM
Hello
@Georg Pauwen wrote:
Hello,
actually you don't need to configure anything on the port channel interface itself. The below should be sufficient:
FYI - Due to possible inconsistencies it best practice for L2 Port Channel NOT to configured on the physical interfaces at all apart from assigning it to a Port-channel group
All the config SHOULD be performed on the logical port-channel which will then propergate that configuration down to the physical interfaces.
11-02-2018 07:15 AM
11-01-2018 05:03 PM
Hello
@Justice918 wrote:
First off i want to apoligize as i am not a big networking guy but somehow have been tasked with this project.
We have a single connections going from each floor of our building to a central server room. Each floor currently has a single fiber connection " connecting them" i have run Ethernet cable from each switch on said floor back to the core switch in our server room " same one that has the fiber connection running to it". With that being said i have found some configs with the help of good ol google to try and stumble may way through this process but am stuck.
Any help would be greatly appreciated and thanks in advance
Can you elaborate on the physical setup, it seems quite convoluted on what you are doing,
Note- you cannot have two separate switcha connecting into the same port-channel on the core, however you can have a switch connect to two separate cores switchs ( one virtual core) providing this is vss mec connection.
11-02-2018 07:19 AM
Switch A is on floor A .. Core switch is on Floor B . We have a single fiber line and a single ethernet line running to said core switch from Switch A. Core switch ports used Fiber line in tengig 9/1 ethernet in gig 8/34 " for example " on Switch A ports used fiber line 1/0/1 ethernet 1/47 - I will add after adding the lines from a previous answer my switch is fulling offline and im having a heck of a time getting it back online - even after putting all port configs back to their original config.
11-02-2018 07:36 AM
Just a bit more info. The fiber adapter on the switch that is down is showing no activity lights after adding the - channel-group ... on the core switch port that said fiber channel is going into.
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