ExtremeSwitching (EXOS)

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VRRP between x670_G2's

  • 1.  VRRP between x670_G2's

    Posted 03-27-2019 13:40
    Good afternoon,

    We have a total of 4 x670_G2 switches at one of our customers, connected by backbone (40GB).
    2 of them are located in one server room, 2 of them in another (about 200meters).

    These switches are operational and can all communicate with eachother.

    In order to communicate with the network of our customer, we have a redundant connection, one per server room. We want to use VRRP to create one IP to communicate to/from on our side.

    The issue: Both connection switches are Master on the same VRRP.

    Our configuration regarding VRRP:
    code:
    Switch A:
    create vlan test tag 99
    configure vlan test ipaddress 10.102.99.2/24
    enable ipforwarding vlan test
    create vrrp vlan test vrid 1
    configure vrrp vlan test vrid 1 priority 200
    configure vrrp vlan test vrid 1 add 10.102.99.1
    enable vrrp

    Switch B:
    create vlan test tag 99
    configure vlan test ipaddress 10.102.99.3/24
    enable ipforwarding vlan test
    create vrrp vlan test vrid 1
    configure vrrp vlan test vrid 1 priority 100
    configure vrrp vlan test vrid 1 add 10.102.99.1
    enable vrrp


    The switches also have this VLAN configured on the backbone ports (tagged).

    Question: How do we configure VRRP so that switch A is master until the connection is lost, in which case switch B takes over.


  • 2.  RE: VRRP between x670_G2's

    Posted 03-27-2019 13:43
    In your config there are no ports added to vlan test.
    That would make both switches not able to ping eachother.
    As you can ping I assume you forgot to add it to this post ?

    Are you sure there is no ACL in place to make VRRP active-active ?


  • 3.  RE: VRRP between x670_G2's

    Posted 03-27-2019 13:52
    Hello OscarK,

    On all switches are policies active, which contain the following:
    code:
    entry extreme_rp2 {
    	if match any { }
    	then {
    	nlri 239.1.3.0/24 ;
    	nlri 239.1.4.0/24 ;
    	nlri 239.249.0.0/24 ;
    	nlri 239.255.255.0/24 ;
    	nlri 224.2.127.254/32 ;
    	}
    }


    And yes I can ping every switch from every other switch, I've not included the complete config since its quite a lot & I would need to blur out customer specific information.


  • 4.  RE: VRRP between x670_G2's

    Posted 03-27-2019 13:55
    Hello Niels,

    these are used for PIM I think.

    Did you add the ports to the vlan ?
    Any log messages about multicast ?


  • 5.  RE: VRRP between x670_G2's

    Posted 03-27-2019 14:01
    Hello Oscar,

    In the default log there were no messages other than the setup of neighbours for OSPF.
    The configuration to add the ports + some additional config lines for your information:

    code:
    create vlan "Backbone_1"
    configure vlan Backbone_1 tag 101
    create vlan "Backbone_2"
    configure vlan Backbone_2 tag 102

    configure vlan test tag 99
    configure vlan test add ports 47,49,53 tagged
    configure vlan Backbone_1 add ports 49 tagged
    configure vlan Backbone_2 add ports 53 tagged

    configure ospf add vlan Backbone_1 area 0.0.0.0
    configure ospf add vlan Backbone_2 area 0.0.0.0
    configure ospf add vlan test area 0.0.0.0

    configure pim add vlan "Backbone_1" sparse
    configure pim add vlan "Backbone_2" sparse

    enable pim
    enable ospf



    If the complete configuration is needed to tackle this issue I'll provide it for you.

    Niels


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