topic RE: VRRP between x670_G2's in ExtremeSwitching (EXOS/Switch Engine)

VRRP between x670_G2's

nielsvdmade — Wed, 27 Mar 2019 20:40:00 GMT

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.

RE: VRRP between x670_G2's

OscarK — Wed, 27 Mar 2019 20:43:00 GMT

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 ?

RE: VRRP between x670_G2's

nielsvdmade — Wed, 27 Mar 2019 20:52:00 GMT

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.

RE: VRRP between x670_G2's

OscarK — Wed, 27 Mar 2019 20:55:00 GMT

Hello Niels,

these are used for PIM I think.

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

RE: VRRP between x670_G2's

nielsvdmade — Wed, 27 Mar 2019 21:01:00 GMT

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