I don't want to abuse your kindness David, but how would you technically 
configure both VSTP and RSTP?

I can't seem to find any sample configuration where both VSTP and RSTP are 
concurrently configured together and no documentation show any example, not 
even the link your attached.

This is a bit confusing for me as I am in new areas and I would like to avoid 
breaking the network when I connect with my less-than-tested configuration.


‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐

On June 12, 2018 1:58 AM, David Kotlerewsky <webnet...@gmail.com> wrote:

> VSTP requires RSTP, see this note:
> Note: EX Series switches can have a maximum of 253 VLANs on VSTP. Therefore, 
> to have as many spanning-tree protocol VLANs as possible, use both VSTP and 
> RSTP. RSTP will then be applied to VLANs that exceed the limit for VSTP. 
> Because RSTP is enabled by default, you just need to additionally enable VSTP.
> See the whole article and guide here:
> https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/spanning-trees-vstp-ex-series-cli.html
> Sincerely,
> --DK
> On 6/11/18, 4:53 PM, "juniper-nsp on behalf of Alex Martino via juniper-nsp" 
> <juniper-nsp-boun...@puck.nether.net on behalf of 
> juniper-nsp@puck.nether.net> wrote:
> Hi All,
> I have to connect two Juniper EX4500 (in VC) to Cisco Nexus 5K VPC (two) and 
> they currently run with RSTP+ and many many VLANs. Uplink ports will be ae on 
> Juniper side and PO on Cisco side.
> The documentations and forums aren't clear to me about the fact that VSTP is 
> sufficent for clean interop or if I also need RSTP enabled and the native 
> vlan id configured the uplink to handle STP on the Cisco native vlan 1.
> Experience and insights are highly appreciated.
> Thanks,
> Alex
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