I'm proposing the following layer 3 LAN topology. All connection link will be point to point routed ports (L3). EIGRP routing will run between all LAN switches using a /30 subnet mask.
The problem is the customer want to dual home all servers (AD & IPT servers) to the two core switches over VLAN 60 (6509-1 & 6509-2). Should I use a layer 2 link to carry HSRP traffic between the two switches. (please see diagram).
Will this cause problems with Eigrp routing. Please advise on network design.
If you want to connect servers to the core switches and run HSRP then you will have to have a L2 link between the 2 core switches. Ideally you would have your servers connected to 2 access-layer switches which are then uplinked with L3 but i appreciate there is an additional cost to that.
So yes you need a L2 link either an access link in the server vlan or a trunk if there are multiple server vlans.
It won't affect the routing but i would
1) make the vlan interfaces passive under eigrp then no neighborships will be formed over the L2 link ie.
router eigrp 1
where vlan 20 is the server vlan.
2) If it is a trunk link you will need to
a) only allow the relevant vlans across it
b) make passive all the vlan interfaces for vlans that are allowed on the trunk
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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