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New Member

How to protect my gateway IP?

I have 2 6500 and we use HSRP , the gateway ip has a virtual MAC, but one computer has stolen this IP and the network crashed, how can I protect this IP?

Thanks.

4 REPLIES
New Member

Re: How to protect my gateway IP?

Was it a DHCP address that was given out that caused the problem?

You could simply put an ACL on your user VLAN interfaces blocking that IP.

New Member

Re: How to protect my gateway IP?

No, the problen is that in the same Vlan a host (manually) puts the gateway IP, the network is broken.

New Member

Re: How to protect my gateway IP?

In that case, your best bet is probably to use static ARP entries so that a new host coming on to the network with that IP can't create a new ARP entry.

Gold

Re: How to protect my gateway IP?

you can't tell the person who's 'stealing' this IP to stop doing it?

or shut down his switchport.

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