Help to determine the most suitable STP type for my configuration

[Ilya_Semenov]

Hello, everybody!

I have a network, where only Extremes exist.

Access layer are 8 stacks spread through floors.

Distribution layer is a stack of 2 X670.

Core layer are two BD8806 connected with MLAG. There is also VRRP configured.

There is one etherchannel between core for MLAG, and one etherchannel to X670 stack.

Floor stacks are connected to X670 with one etherchannel link.

I have 30 vlans total.

The schema is provided below.

Could you please help me to find the most suitable STP type/configuration?

At the moment I have configured EMISTP encapsulation with dot1w mode, but I don't like it.

Many thanks in advance,

Ilya

P.S. With this scheme I have strange alternating ping replies from 1 to 50 ms. Is there any connection with STPDs or VRRP in the core?

P.P.S Could you give me a link to any article where the simplest STP configuration on extremes described? I am interested in the method of configuring STP for all vlans with minimum efforts like in CISCO.

[André_Herkenrat]

OK - I understood your issue.
Please look into ELRP - It makes life a lot easier than STP.

Regards
André

[Ilya_Semenov]

Hello, Andre!

Thank you for your reply.

First of all, at the access layer. Customers sometimes attach stupid switches.

Secondly, at the distribution layer. During the configuration process last weekend the technicians got wrong with cables and looped X670 stack. (LLDP was my salvation!)

Anyway, there are many free ports on X670. The both switches of this stack is located on different floors. The chance of mistake is high.

[Erik_Auerswald]

Hi Ilya,

for the distribution switches, you can disable unused ports. Alternatively you can remove any VLAN from the unused ports (e.g. "configure vlan Default delete ports all").

Br,
Erik

[André_Herkenrat]

Hi,

where do you see a potential for a loop ? I don't see any need for STP in this network.
If you want a loop prevention for access ports I would recommend ELRP.

Regards
André