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Amount of L2 Handoff borders in a fabric site

Hello Team,

We are having a very simple scale question concerning the amount of L2 Handoff borders in a site. In the design guides we only see examples with one L2 Handoff Border in a site, which you can see in https://www.cisco.com/c/en/us/td/docs/solutions/CVD/Campus/cisco-sda-design-guide.html#L2_Border_Handoff.

We are not seeing any scale numbers for the amount of L2 Handoff Borders (L2Border) in a site.

We need a second L2 Handoff border in a site to stretch some subnets from a second L3 distribution point in the building of his traditional environment. They are using the same VLAN ID’s, and of course different subnets, so adding a second L2 Handoff border is necessary to stretch them to the fabric site.

We tested it in our LAB by adding a second L2 Handoff border to a single-site and it worked like a charm. This test site consist of two External borders, and by adding the two L2 Handoff borders the total amount of borders in the site was four.

Our question: How many L2 Handoff Borders can we add to a single-site? The official border type is “L2Border” instead of “Internal” or “External” so it looks like it doesn’t count as border in the site.

 

Thanks in advance for your answer.

1 Accepted Solution

Accepted Solutions

Scott Hodgdon
Cisco Employee
Cisco Employee

@Jasper van Nederpelt , L2 Borders have he same scale as the "Internal" border type, which is to say there really is no limit except for the limit on the number of fabric devices in a site (see DNA Center Data Sheet https://www.cisco.com/c/en/us/products/collateral/cloud-systems-management/dna-center/nb-06-dna-center-data-sheet-cte-en.html Table 14).

Cheers,
Scott Hodgdon

Senior Technical Marketing Engineer

Enterprise Networking and Cloud Group

View solution in original post

1 Reply 1

Scott Hodgdon
Cisco Employee
Cisco Employee

@Jasper van Nederpelt , L2 Borders have he same scale as the "Internal" border type, which is to say there really is no limit except for the limit on the number of fabric devices in a site (see DNA Center Data Sheet https://www.cisco.com/c/en/us/products/collateral/cloud-systems-management/dna-center/nb-06-dna-center-data-sheet-cte-en.html Table 14).

Cheers,
Scott Hodgdon

Senior Technical Marketing Engineer

Enterprise Networking and Cloud Group

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