Question about Cisco Catalyst 4006 Chassis ( 4006)
I cannot find a explanation for the following error:
SYS-4-P2_WARN: 1/Tag 6 on packet from 00:0a:b8:e8:7d:5e port 3/48, but port's native vlan is 1
it is occurring on Cisco switch, the port that is mentioned is going to a Cisco router.
%SYS-4-P2_WARN: 1/Tag 0
The switch generates %SYS-4-P2_WARN: 1/Tag
This example shows the syslog output that you see when this error occurs:
%SYS-4-P2_WARN: 1/Tag [dec] on packet from [ether] port [chars],
but port's native vlan is [dec] This message indicates that an 802.1Q-tagged packet was received on a nontrunk port. The VLAN that is derived from the packet tag is different from the port native VLAN. In the error message:
There is a possibility that the local port is incorrectly configured
as an access port instead of a trunk port. Alternately, the remote side can
have been configured as a trunk port instead of an access port.
Verify that the local port is not incorrectly configured as an access port instead of a trunk port. Also, verify that the remote side is not configured as a trunk port instead of an access port.
Posted on Feb 06, 2008
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Posted on Jan 02, 2017
Tips for a great answer:
This drop is usually seen when a port is not configured correctly. This drop is incremented when a packet cannot be successfully forwarded within switch ports as a result of the default or user configured switch port settings. The following configurations are the likely reasons for this drop:
•The security appliance is connected to another Cisco device that has Ethernet keepalives. For example, Cisco IOS software uses Ethernet loopback packets to ensure interface health. This packet is not intended to be received by any other device; the health is ensured just by being able to send the packet. These types of packets are dropped at the switch port, and the counter increments.
•The VLAN only has one physical interface, but the DEST of the packet does not match the MAC address of the VLAN, and it is not the broadcast address
Throubleshoot these and see if any of them apply to you. Thank you for choosing fixya.com.
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