* Gert Doering <[email protected]> [2017-04-20 16:19]: > Hi, > > On Thu, Apr 20, 2017 at 12:10:21PM +0000, Scott Granados wrote: > > Oh boy, I???ve seen that 253 VLAN thing bite a big customer in the > > back side. You add number 254 and whammo! > > What exactly happens then? (We currently only use juniper at the edge, > where no single switch has more than ~40-50 VLANs, so the risk has > been small :-) )
Well, on Juniper it just fails:
[edit protocols vstp]
'vlan all'
Cannot configure VSTP on all VLANs when more than 253 VLANs are configured.
Configure vstp vlan-group along with STP or RSTP to cover all VLANs
[edit protocols]
'vstp'
Failed to configure vstp on all vlans
error: configuration check-out failed
Regards
Sebastian
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