Fabric Overview

ChristianK — Mon, 11 Aug 2025 13:17:23 GMT

Is there a possibility to get on a Fabric an overview of the Fabric Size?

With show virtual-ist I can see if the device is working with Virtual IST

show isis interface shows me a working ISIS Interface. To have an understanding of which ports my Fabric is connecting.

Re: Fabric Overview

gfriedl — Tue, 12 Aug 2025 13:32:17 GMT

I am not sure, if i understand your Q correctly, but did you use "show isis spbm nick-name" ? This would display your all fabric nodes in a given ISIS area ; so in a single-area setup in fact alll fabric nodes. The output also has a column for Virtual-BMAC, so one would easily be able to find out, which nodes are setup as VIST pairs. If your node is a Muulti-Area Boundary node, the command above would evenn display you all nodes in both Home and remote ISIS areas. See example bewlo:

show isis spbm nick-name 
============================================================================================================================================
ISIS SPBM NICK-NAME
============================================================================================================================================
LSP ID LIFETIME NICK-NAME VIRTUAL-BMAC HOST-NAME AREA AREA NAME 
--------------------------------------------------------------------------------------------------------------------------------------------
020d.c100.0000.00-00 1034 d.c0.01 02:0d:c1:00:00:01 DC1-C1 HOME DC1 
020d.c200.0000.00-00 1052 d.c0.02 02:0d:c1:00:00:01 DC1-C2 HOME DC1 
887e.25b4.7884.00-00 1033 d.c0.0b 88:7e:25:b4:78:85 DC1-L2 HOME DC1 
887e.25b5.3c84.00-00 1066 d.c0.0a 88:7e:25:b4:78:85 DC1-L1 HOME DC1 
92bb.00ff.fff0.00-00 1046 9.bb.00 00:00:00:00:00:00 vn-BB-DC1 HOME DC1 
dcb8.08aa.0084.00-00 1034 d.c0.0c 00:00:00:00:00:00 DC1-L3 HOME DC1 
020a.bbc1.0000.00-00 1068 a.bb.c1 00:00:00:00:00:00 CmpA-C1 REMOTE BB-AREA 
020a.bbc2.0000.00-00 1069 a.bb.c2 00:00:00:00:00:00 CmpA-C2 REMOTE BB-AREA 
020b.bbc1.0000.00-00 949 b.bb.c1 00:00:00:00:00:00 CmpB-C1 REMOTE BB-AREA 
020b.bbc2.0000.00-00 1033 b.bb.c2 00:00:00:00:00:00 CmpB-C2 REMOTE BB-AREA 
020c.bbc1.0000.00-00 837 c.bb.c1 00:00:00:00:00:00 CmpC-C1 REMOTE BB-AREA 
020c.bbc2.0000.00-00 834 c.bb.c2 00:00:00:00:00:00 CmpC-C2 REMOTE BB-AREA 
020d.bbc1.0000.00-00 1034 d.bb.c1 00:00:00:00:00:00 DC1-C1 REMOTE BB-AREA 
020d.bbc2.0000.00-00 1052 d.bb.c2 00:00:00:00:00:00 DC1-C2 REMOTE BB-AREA 
020f.bbf1.0000.00-00 1034 e.f0.01 00:00:00:00:00:00 FRA-SD1 REMOTE BB-AREA 
02dd.bbc1.0000.00-00 836 b.0d.c1 00:00:00:00:00:00 CmpD-C1 REMOTE BB-AREA 
02dd.bbc2.0000.00-00 1034 b.0d.c2 00:00:00:00:00:00 CmpD-C2 REMOTE BB-AREA 
9200.00ff.fff0.00-00 540 9.00.00 00:00:00:00:00:00 vn-BERLIN REMOTE BB-AREA 
920a.00ff.fff0.00-00 1068 9.0a.00 00:00:00:00:00:00 vn-CampusA REMOTE BB-AREA 
920b.00ff.fff0.00-00 945 9.0b.00 00:00:00:00:00:00 vn-CampusB REMOTE BB-AREA 
920c.00ff.fff0.00-00 833 9.0c.00 00:00:00:00:00:00 VN-Cmp-C REMOTE BB-AREA 
920d.00ff.fff0.00-00 833 9.0d.00 00:00:00:00:00:00 VN-CmpD REMOTE BB-AREA 
92d1.00ff.fff0.00-00 1046 9.d1.00 00:00:00:00:00:00 vn-DC1 REMOTE BB-AREA 
---------------------------------------------------------------------------------------------------------------------------------

Re: Fabric Overview

RobertD1 — Wed, 13 Aug 2025 14:40:32 GMT

This knowledge based article has some useful troubleshooting commands which can help you understand the Fabric more. https://extreme-networks.my.site.com/ExtrArticleDetail?an=000083456.

Re: Fabric Overview

ChristianK — Fri, 22 Aug 2025 12:26:14 GMT

I was looking for the output of the command

show isis spbm nick-name

To see all active members

topic Fabric Overview in ExtremeSwitching (VSP/Fabric Engine)

Fabric Overview

Re: Fabric Overview

Re: Fabric Overview

Re: Fabric Overview