topic RE: EXOS to VOSS ISIS connection in ExtremeSwitching (EXOS/Switch Engine)

EXOS to VOSS ISIS connection

RobertD1 — Wed, 17 Aug 2022 17:20:00 GMT

Hi,

Trying to find how to connect an EXOS switch to an existing Fabric core switch which has VOSS. Not clear what configuration to apply to EXOS to create SPBM 1 and enable ISIS on an interface to bring up an adjacency using standard B-VLANs 4051-4052. And then how to extend VLAN using L2 VSNs from EXOS side.

I can create an ISIS area and bring up a neighbor relationship between two EXOS switches but not sure how to integrate with a VOSS Fabric node.

Any help appreciated.

Thanks,
Rob

RE: EXOS to VOSS ISIS connection

CThompsonEXOS — Wed, 17 Aug 2022 17:39:00 GMT

Hi Robert,

This article may be helpful depending on where the issue is occurring:

https://extremeportal.force.com/ExtrArticleDetail?an=000077283

Thanks,
Chris Thompson

RE: EXOS to VOSS ISIS connection

RobertD1 — Wed, 17 Aug 2022 17:58:00 GMT

Thanks Chris, good article which is for Fabric Attach which they don't use.

I can bring up an adjacency between EXOS in a lab with the following.

EXOS-5

create isis area spbm1
configure isis area spbm1 is-type level 2
configure isis area spbm1 add area-address 49.0000
configure vlan 1 ipaddress 10.10.10.10 255.255.255.0
enable ipforwarding Default
configure isis add vlan Default area spbm1
configure isis area spbm1 system-id 00bb.0005.0005
enable isis area spbm1

EXOS-6

create isis area spbm1
configure isis area spbm1 is-type level 2
configure isis area spbm1 add area-address 49.0000
configure vlan 1 ipaddress 10.10.10.20 255.255.255.0
enable ipforwarding Default
configure isis add vlan Default area spbm1
configure isis area spbm1 system-id 00bb.0006.0006
enable isis area spbm1

But their Fabric uses B-VIDS and L2-VSNs so how does this extend to EXOS switches. Or is FA the only option?

Thanks,
Rob

RE: EXOS to VOSS ISIS connection

RobertD1 — Wed, 17 Aug 2022 19:06:00 GMT

I read the article and it works pretty well to be fair and maybe the way to connect EXOS is just FA them.

* EXOS-VM.13 # show fabric attach elements
Fabric Attach Mode: Proxy
Mgmt Auto
System Id Port Type VLAN Tag Provision
----------------------------- ------- ---------------- ---- --- --------------
00-51-00-ee-00-00-00-00-00-c7 8 Server None Mix Disabled
* EXOS-VM.14 # show fabric attach assignments
Fabric Attach Mode: Proxy
Port VLAN VLAN Name Type ISID/NSI Status
------- ---- -------------------------------- ------- -------- --------
10 v10 Static 10010 Active
* EXOS-VM.15 # show port 8 vlan
Untagged
Port /Tagged VLAN Name(s)
-------- -------- ------------------------------------------------------------
8 Untagged Default
Tagged v10
* EXOS-VM.16 #

RE: EXOS to VOSS ISIS connection

CThompsonEXOS — Wed, 17 Aug 2022 21:01:00 GMT

That may be the path of least resistance. I am not a huge VSP guy but that may allow the VSP to keep doing the VSP thing(VSNs, etc) while still "extending the fabric".

RE: EXOS to VOSS ISIS connection

Roger_Lapuh — Thu, 18 Aug 2022 10:37:00 GMT

VOSS does not support IS-IS on UNI ports, only as Fabric Network to Network (NNI) protocol to exchange topology, routes and services. So to connect an EXOS to exchange IP routing tables use OSPF, BGP or RIP to redistribute IP routes into VOSS IS-IS.
Roger