Fabric Extend over ISP (Hub-and-spoke)

[bfaltys]

We have our own fiber mesh and SPBM running fine. We are getting additional links at multiple sites from an ISP. The ISP is using q-in-q so we basically have a pseudowire from the core to each site. Since we cannot map our 2 BVLANs to multiple ISP tags we need to use layer 3 fabric extend, as far as I understand. It seems like this is possible, but I haven’t been able to locate a good example yet. Am I thinking about this wrong? Would this require our interface to the ISP at both ends to be a layer 3, routed interface? Would we need a separate /30 between the core and each site? I’m sure I have more questions, but this would be a good start.

[Miguel-Angel_RO]

[bfaltys]

I didn’t have the i-sids configured. Doh! Looks like it is working!

[bfaltys]

Thanks. I will look through that to see if/what I’m missing. I currently have an adjacency, but not seeing any MACs learned from the other switch.

TEST1:1#sh isis adj
************************************************************************************
                Command Execution Time: Tue May 25 13:48:12 2021 UTC
************************************************************************************

====================================================================================================
                                ISIS Adjacencies
====================================================================================================
INTERFACE         L STATE        UPTIME PRI HOLDTIME SYSID             HOST-NAME         STATUS           
----------------------------------------------------------------------------------------------------
2258-1/24         1 UP         00:12:08 127       27 0001.5000.0600    TEST2             ACTIVE           

--------------------------------------------------------------------------------
 1 out of 1 interfaces have formed an adjacency
--------------------------------------------------------------------------------

TEST1:1#sh vlan mac
TEST1:1#sh vlan mac-address-e
TEST1:1#sh vlan mac-address-entry
************************************************************************************
                Command Execution Time: Tue May 25 13:48:18 2021 UTC
************************************************************************************

====================================================================================================
                                    Vlan Fdb
====================================================================================================
VLAN            MAC                                   SMLT                       
ID   STATUS     ADDRESS            INTERFACE          REMOTE   TUNNEL            
----------------------------------------------------------------------------------------------------
10   learned    00:e0:4c:68:35:01  Port-1/14          false    -                 
10   self       f0:64:26:68:d9:00  Port-cpp           false    -                 
4051 self       00:01:50:00:05:00  Port-cpp           false    -                 
4051 self       00:01:50:00:06:00  2258-1/24          false    -                 
4051 self       12:50:05:ff:ff:ff  Port-cpp           false    -                 
4051 self       12:50:06:ff:ff:ff  2258-1/24          false    -                 
4052 self       00:01:50:00:05:00  Port-cpp           false    -                 
4052 self       00:01:50:00:06:00  2258-1/24          false    -                 
4052 self       12:50:05:ff:ff:ff  Port-cpp           false    -                 
4052 self       12:50:06:ff:ff:ff  2258-1/24          false    -                 

c: customer vid   u: untagged-traffic

10 out of 10 entries in all fdb(s) displayed.

TEST1:1#           

[Miguel-Angel_RO]

Here you are: https://www.extremenetworks.com/support/documentation/vsp-operating-system-software-voss-document-co...

Mig

[bfaltys]

Do you have a link to the guide you referenced? I’d like to look at that if it contains an example. I think I’m tracking on what to do, but a guide would be helpful just in case.