1

I've got 2 Core-Multilayer-Switches connected with each other with two cables (trunks). They are also connected with the distribution-switches (and each switch is connected with both core-switches).

Each core-switch is also connected with two WAN-Router(routed-ports) (It's not shown in my "drawing" that EACH core-switch is connected to BOTH WAN-Routers).

  (WAN 1) O                  O (WAN 2)
           \                /
      Core1 []============[] Core2
            |  \        /  |
            |   \      /   |
            |    \    /    |
         DISTRIBUTION SWITCHES

Now, I want to form HSRP with the core-L3-Switches for the distribution Switches and the WAN-Router. Do I have to configure 2 virtual router? Or are the wan-router and the dis-switches accessing the same virtual router? And what connection type is used between those core-switches (trunk or normal ip-interfaces)

Improve this question
7
  • Are your core switches layer-3 switches?
    – Ron Maupin ♦
    Feb 17, 2018 at 19:09
  • yes - I wrote "Multilayer-Switches" instead of Layer-3 Switches
    – watchme
    Feb 17, 2018 at 19:10
  • Are the links from the core switches to the WAN routers routed links, and do both core switches connect to both WAN routers?
    – Ron Maupin ♦
    Feb 17, 2018 at 19:12
  • I think you mean access switches, not distribution switches. Your core switches are your distribution switches (they connect to the access switches).
    – Ron Maupin ♦
    Feb 17, 2018 at 19:21
  • No, I really mean core-switches. That's how it is wished (not by me).
    – watchme
    Feb 17, 2018 at 19:24

1 Answer 1

Reset to default
2

What you would do is configure a virtual router for each VLAN. Configure HSRP on The SVIs on your core switches. A host will use the virtual router as the gateway for the VLAN to which it is connected.

Between the layer-3 switches and the WAN routers, you use routing, not HSRP. Routing will fail over much, much faster than HSRP in the case of a failure.

Improve this answer
6
  • Yes, I am of your opinion that routing is the better way to go between L3 and WAN. The thing is that it is wished the other way.
    – watchme
    Feb 17, 2018 at 19:29
  • 1
    HSRP is for hosts on a VLAN, not for routed links, and you said that you have routed links between the core switches and WAN routers, so you cannot configure HSRP on those links.
    – Ron Maupin ♦
    Feb 17, 2018 at 19:30
  • Oh well... I am sorry for that wrong information... I put that in the question wrongly because I wanted to do it that way.... but well, no, they are not routed ports, sorry
    – watchme
    Feb 17, 2018 at 19:33
  • Then how are they connected. Each interface on the WAN router is in a different network. HSRP must be on the same network, it doesn't span networks. You really need to edit the question to include a better diagram, and the router and core switch configurations.
    – Ron Maupin ♦
    Feb 17, 2018 at 19:36
  • they are access-links on the core-switch
    – watchme
    Feb 17, 2018 at 19:36

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.