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dhcp - strange behaviour in vlan

Srin_G
Level 3
Level 3

Hello,

I have a issue with a specific laptop.When it gets plugged into  vlan x I can see port-security errors! If i remove port-security config from the port it wont get an dhcp.

If I change the port to vlan y it works straightaway with or without port-security!

Testing further, we tried other laptops and it works fine with or without port security in vlan x.

Any ideas?!?

Cheers

 

 

2 Replies 2

acampbell
VIP Alumni
VIP Alumni

Hi,

 

Is the MAC address of the device in question known in your config against another interface.

May be a static or sticky address.

 

show run | inc MAC.MAC.MAC

 

Regards

Alex

Regards, Alex. Please rate useful posts.

no mate, there's nothing like that!

the arp table doesnt show anything as well.

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