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Router redundancy between 2 separate subnets


How is router redundancy completed between 2 different subnets?  Or can it?
 

Requirements:
Ext-PC1 and Ext-PC2 need to be able to access Int-Server1 and Int-Server2 regardless of router outages.

 

 

My thinking is to put Ext-RTRs and Int-RTRs on the same subnet and run VRRP between them.

 

Thanks for any help.

2 REPLIES
Silver

I suppose that this 2 PCs are

I suppose that this 2 PCs are in different VLANs right? I would go with this solution:

- connection between Ext-RTR1 and Ext-RTR2 and switch stack - trunk;

- subinterface which corresponds to 2 VLANs subnets on both routers (with coresponding addressing);

- HSRP or VRRP with 2 groups configuration on routers - one router primary for one VLAN, second one primary for other VLAN.

HTH,

Dragan

HTH, Dragan
Super Bronze

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Your diagram alrealy shows the two Int-RTRs on the same subnet with HSRP/VRRP.  What you want to do is have both Ext-RTRs on both PC subnets, also running HSRP/VRRP.  Additionally you might want both your Ext-RTRs and Int-RTRs to attach to both edge switches.

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