topic Re: New to fabric . Need Help in ExtremeSwitching (VSP/Fabric Engine)

New to fabric . Need Help

Ahmed_101 — Mon, 10 Feb 2025 15:55:57 GMT

Hi everyone, I'm a student and new to Extreme Fabric.

I'm working on a lab where VLAN 10 and VLAN 20 need to communicate with each other.

I have configured IS-IS, and the switches have formed adjacencies. The topology consists of multiple edge switches (EDGE1, EDGE2, EDGE3, and EDGE4) and backbone switches (BB1 and BB2). The VLANs are mapped to I-SIDs as follows:

VLAN 10 and VLAN 20 share I-SID 11010.
VLAN 50 has I-SID 11050 and connects multiple edge switches.

The I-SIDs are visible on the switches, but I am unable to ping between any of them. My main question is:

How will the VLANs be routed across the fabric without using VRF or VSN?

Any help would be appreciated!

Re: New to fabric . Need Help

EF — Tue, 11 Feb 2025 13:38:45 GMT

Hi Ahmed,

I dont understand the reason VLAN10 and VLAN 20 share the same i-sid, doing that you are connected them on the same broadcast domain, so is like the same VLAN.

Configure each vlan to a diferente i-sid, for example:

vlan i-sid 10 200010
vlan i-sid 20 200020
vlan i-sid 50 200050

Configure it in all BEB and BCB where VLANs are deployed and extend all to one BCB.

Then, on BCB, configure L3 int, for example:

int vlan 10
ip address 192.168.10.1 255.255.255.0
int vlan 20
ip address 192.168.20.1 255.255.255.0
int vlan 50
ip address 192.168.50.1 255.255.255.0

It must be works.

Regards

Re: New to fabric . Need Help

Marlon_Scheid — Tue, 11 Feb 2025 13:41:47 GMT

Hi Ahmed,

which version do yo use? I am not sure if the dataplane support is already fully included in gns3 fabric switches. In the past there was only controlplane support.

regards

Marlon

Re: New to fabric . Need Help

EF — Tue, 11 Feb 2025 16:41:35 GMT

sorry i'm not aware of the features of GNS releases

Re: New to fabric . Need Help

Bartek — Wed, 12 Feb 2025 12:20:54 GMT

Until you are doing some pings from Fabric Switches it's OK but when you try to connect external hosts then dataplane is not working. vIST and SMLT with EXOS v-switches is also working unstable and unreliable

@Ahmed_101 : Use Globar Routing Table (this feature doesn't require using VRFs). You need to enable IP-Shortcuts with route redistribution policies on nodes with L3 interfaces