09-27-2022 06:46 AM
If I have a fabric and I add 9200 series switches that support only 4 virtual networks.. does that mean the entire fabric is limited to 4 virtual networks even if I have 9300/9500 deployed in the fabric..... I would not think so but looking for data on this topic.. seems as though you could have other switches supporting more than 4 vns but the 9200's would be limited....Thanks!
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09-27-2022 07:20 AM - edited 09-29-2022 05:06 AM
@craneman1 , it depends on the order in which the 9200s are added.
If you have an existing SD-Access site with more than 4VNs, then the 9200 should not be allowed to join that site.
If you have an existing site with fewer than 4 VNs and that site includes 9200s, then you would not be able to enable more than 4 VNs in that site.
All that said, we now have a feature called Fabric Zones which allows you to control which VNs are deployed on Edge Nodes in the fabric site. For example, if one edge node is a 9200 and one is a 9300, then you could deploy just 2 VNs to the 9200 while 5 VNs are deployed to the 9300. However, if you want all 5 VNs on the 9200 then this would not be possible.
You can find information on Fabric Zones in the Cisco DNA Center User Guides starting with 2.2.3.x , and there is a Cisco Live presentation on Fabric Zones in the On-Demand Library at ciscolive.com at https://www.ciscolive.com/on-demand/on-demand-library.html?search=3833&search=3833#/session/1655479473366001lfCA .
Cheers,
Scott Hodgdon
Senior Technical Marketing Engineer
Enterprise Networking and Cloud Group
09-27-2022 07:20 AM - edited 09-29-2022 05:06 AM
@craneman1 , it depends on the order in which the 9200s are added.
If you have an existing SD-Access site with more than 4VNs, then the 9200 should not be allowed to join that site.
If you have an existing site with fewer than 4 VNs and that site includes 9200s, then you would not be able to enable more than 4 VNs in that site.
All that said, we now have a feature called Fabric Zones which allows you to control which VNs are deployed on Edge Nodes in the fabric site. For example, if one edge node is a 9200 and one is a 9300, then you could deploy just 2 VNs to the 9200 while 5 VNs are deployed to the 9300. However, if you want all 5 VNs on the 9200 then this would not be possible.
You can find information on Fabric Zones in the Cisco DNA Center User Guides starting with 2.2.3.x , and there is a Cisco Live presentation on Fabric Zones in the On-Demand Library at ciscolive.com at https://www.ciscolive.com/on-demand/on-demand-library.html?search=3833&search=3833#/session/1655479473366001lfCA .
Cheers,
Scott Hodgdon
Senior Technical Marketing Engineer
Enterprise Networking and Cloud Group
09-29-2022 04:20 AM
so you mean "However, if you want all 7 VNs on the 9300 then this would not be possible."
09-29-2022 09:43 AM
@craneman1 , I have corrected the original text.
The 2 VNs on the 9200 could also exist on the 9300s even though they are in different Fabric Zones. So you could have :
Zone 1 - VN A, VN B on 9200s
Zoe 2 - VN A, VN B , VN C, VN D, VN E on 9300s
Cheers,
Scott Hodgdon
Senior Technical Marketing Engineer
Enterprise Networking and Cloud Group
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