5700 VLAN Interface Limitation

[Pete W]

Hi All,

Does anyone know of a way "around" the 5700's 32 x VLAN interface limit?

Regards,

Pete

[parnassus]

It looks like that 32 is an hardcoded threshold value for the maximum number of Virtual Interfaces (VLANs) configurable per-port (Up to 4094 port-based VLANs can be defined per Switch)...at least this is what I can read on the latest HPE FlexNetwork 5700 Comware 7.1.045 Release 2422P01 Release Notes.

What happens if you try to configure the 33rd Tagged VLAN on a port (supposing you have more than, let's say, 32 static VLANs defined on the Switch)?

[Pete W]

When trying to create your 33rd VLAN interface, you get the error:

[SW-001]int vlan 3000
Can not create this interface.
[SW-001]

[parnassus]

Is that behaviour/limit independent from assigned port's link type (Trunk or Hybrid port link types; not valid for an Access port link type) to the port to which VLANs are applied?

I would expect that a Trunk port's link type is able to carry more than 32 VLANs...but I could be wrong in expecting that.

[Pete W]

Yes, I believe that it is independent. 

I have numerous (40+) VLANs configured on the 5700 in question, however only 32 of them can have a VLAN interface.

There is a 1024 route limit on the 5700, so the switch can learn addiional routes through a routing protocol or via a static route.

<SW-001>dis ip routing-table summary

Max ECMP: 8
Max Active Route: 1024
Remain Active Route: 892
<SW-001>

Regards,

Pete

[adrodrigues]

I'm surprise.

What the limit of Vlan interface 3600 and 5500?

How I do this calculation?

Thanks.