Trying to assign my 2nd WAN port a Static IP

[Jimmy Sauvageau]

Good morning,

I'm trying to configure my 2nd WAN port on my 891F Router for a SIP Port. We have a 5 Static IP Bundle wiht our ISP. When I try to configure my second WAN port with a different Static IP that was provided by our ISP, I get the "IP Address overlaps with GigabitEthernet 8" (other WAN port). There's got to be a way for me to configure my second WAN port with a Public Static IP.

Any suggestions?

[Mark Malone · Accepted solution]

Hi

You cant have 2 ips in the same subnet range in the same devices routing table assigned to diff interfaces or it will get confused and not know how to route that's why its flagging it as an error  , if you want to do that you would need to use a vrf and separate the routing tables that way one is bound to say routing table A\ and 1 is bound to routing table B , or else ask the ISP to split the subnet its given you into /30s , so you can use them on multiple interfaces

[Jimmy Sauvageau]

I see, I have requested to our ISP to split the IPs into different subnets. Now I guess I have to wait. Thanks Mark.

[azibnaseem]

Hi [@jimmy.sauvageau@brunnet.com] ,

Is both IP's are in the same Subnet?

Regards'

[Jimmy Sauvageau]

Yes they are, it's a 5 static IP bundle /29 subnet.

[azibnaseem]

Hey [@jimmy.sauvageau@brunnet.com] ,

Then Mr. Mark Malone said right that ask your ISP to provide another Subnet or Split this Subnet into /30 Mask.

Regards'

[girish_p1]

Yes this is a right option. You can create different VRFs and assign the different ports to the different VRFs and thus the problem can be solved however it will need more stuff to configure the VRFs