01-29-2013 10:07 AM - last edited on 03-25-2019 05:29 PM by ciscomoderator
We are deploying ISE and everything seems to be working just fine.
We have a series of servers accessing the network using etherchannels.
We are complete aware that 802.1X is not recommended for Servers but we would like to activate it for a proof of concept.
Is there a way (or work around) to activate 802.1X in a port-channel?
Thanks for your help!
Solved! Go to Solution.
01-29-2013 07:06 PM
Hello vbuendia, I wonder if we know each other?
802.1x is not supported on port-channels. You can potentially look into SGA for securing servers in your environment.
Here is a snip-it from the 15.x configuration guide:
The 802.1x protocol is supported on Layer 2 static-access ports, voice VLAN ports, and Layer 3
routed ports, but it is not supported on these port types:
– Trunk port—If you try to enable 802.1x authentication on a trunk port, an error message
appears, and 802.1x authentication is not enabled. If you try to change the mode of an
802.1x-enabled port to trunk, an error message appears, and the port mode is not changed.
– Dynamic ports—A port in dynamic mode can negotiate with its neighbor to become a trunk
port. If you try to enable 802.1x authentication on a dynamic port, an error message appears,
and 802.1x authentication is not enabled. If you try to change the mode of an 802.1x-enabled
port to dynamic, an error message appears, and the port mode is not changed.
– Dynamic-access ports—If you try to enable 802.1x authentication on a dynamic-access (VLAN
Query Protocol [VQP]) port, an error message appears, and 802.1x authentication is not
enabled. If you try to change an 802.1x-enabled port to dynamic VLAN assignment, an error
message appears, and the VLAN configuration is not changed.
– EtherChannel port—Do not configure a port that is an active or a not-yet-active member of an
EtherChannel as an 802.1x port. If you try to enable 802.1x authentication on an EtherChannel
port, an error message appears, and 802.1x authentication is not enabled.
– Switched Port Analyzer (SPAN) and Remote SPAN (RSPAN) destination ports—You can
enable 802.1x authentication on a port that is a SPAN or RSPAN destination port. However,
802.1x authentication is disabled until the port is removed as a SPAN or RSPAN destination
port. You can enable 802.1x authentication on a SPAN or RSPAN source port.
Thank you for rating!
01-29-2013 07:06 PM
Hello vbuendia, I wonder if we know each other?
802.1x is not supported on port-channels. You can potentially look into SGA for securing servers in your environment.
Here is a snip-it from the 15.x configuration guide:
The 802.1x protocol is supported on Layer 2 static-access ports, voice VLAN ports, and Layer 3
routed ports, but it is not supported on these port types:
– Trunk port—If you try to enable 802.1x authentication on a trunk port, an error message
appears, and 802.1x authentication is not enabled. If you try to change the mode of an
802.1x-enabled port to trunk, an error message appears, and the port mode is not changed.
– Dynamic ports—A port in dynamic mode can negotiate with its neighbor to become a trunk
port. If you try to enable 802.1x authentication on a dynamic port, an error message appears,
and 802.1x authentication is not enabled. If you try to change the mode of an 802.1x-enabled
port to dynamic, an error message appears, and the port mode is not changed.
– Dynamic-access ports—If you try to enable 802.1x authentication on a dynamic-access (VLAN
Query Protocol [VQP]) port, an error message appears, and 802.1x authentication is not
enabled. If you try to change an 802.1x-enabled port to dynamic VLAN assignment, an error
message appears, and the VLAN configuration is not changed.
– EtherChannel port—Do not configure a port that is an active or a not-yet-active member of an
EtherChannel as an 802.1x port. If you try to enable 802.1x authentication on an EtherChannel
port, an error message appears, and 802.1x authentication is not enabled.
– Switched Port Analyzer (SPAN) and Remote SPAN (RSPAN) destination ports—You can
enable 802.1x authentication on a port that is a SPAN or RSPAN destination port. However,
802.1x authentication is disabled until the port is removed as a SPAN or RSPAN destination
port. You can enable 802.1x authentication on a SPAN or RSPAN source port.
Thank you for rating!
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide