02-26-2004 03:54 PM - edited 03-02-2019 01:53 PM
While capturing packets on our Cat 4006 (Sup III/IOS) switch, I noticed that I am receiving frames for other unicast hosts that belong to my VLAN.
The destination MAC addresses are known by the switch, and are mostly out it's int port-channel1 (connected to another Cat 4006 SupII/CatOS).
No SPAN or port monitoring is enabled.
CAM aging time is default (5 min).
The ports/interfaces in question are configured as switchport access (no trunking, etc).
I have rebooted both switches: no change.
The problem seems to be occurring for other hosts on the same VLAN. I configured a port for a different VLAN and picked up traffic for hosts on that different VLAN.
Any help is appreciated...thanks, Christopher
Solved! Go to Solution.
02-27-2004 03:37 AM
There are a few different reasons for this. One of the more common occurs when using HSRP and having asymetrical routing going on. Check out Cisco's doc on unicast flooding.
http://cisco.com/en/US/products/hw/switches/ps700/products_tech_note09186a00801d0808.shtml
02-27-2004 03:37 AM
There are a few different reasons for this. One of the more common occurs when using HSRP and having asymetrical routing going on. Check out Cisco's doc on unicast flooding.
http://cisco.com/en/US/products/hw/switches/ps700/products_tech_note09186a00801d0808.shtml
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