[c-nsp] MSTP interop issue

[Tom Hill]

On 15/07/14 16:46, Hari Sapkota wrote:
> MSTP switches work in a region if they have similar hash values for the
> region. Make sure to have identical VLAN mapping on each switches that are
> to be placed in the same region.

Last I checked, this also meant creating the 'burnt in' reserved VLANs 
that are common on most Cisco Catalyst (for some oldskool reason), on 
your Huawei switches -- otherwise the hash just wouldn't match.

I've had Cisco 3560-X, Dell PC 6200 & 5400, and Brocade CES all happily 
elect separate roots for various instances by ensuring they have the 
1001-1005 VLANs created (but un-used, obviously).

HTH,

Tom