Suggessions for a suitable Cisco Edge switches to implement STP on the network

Hi

My predecessor had installed 2XCISCO 3750 switches (implemented LACP on these core switches) that is located in the server room. We have 4 Comms cabinet on different floors up-linked through fibre and all these cabinets have a mixture of D-link, HP switches and I was told that STP was configured.

In this week few times one of the Gigabit ports on the Core switch was Shutdown and this has become and big problem. I went into the Gigabit interface and gave shutdown and no shutdown command and the gigabit interface came up. I think somehow network looping has happened and STP din't work and the Gigabit uplink port was shutdown.

I posted in the forum long time ago and was discussed that it could be a spanning tree incompatibility issue.
I am now planning to buy Cisco switches and implement STP, so that it doesn’t have any incompatibility issue. Please suggest the type of 48 port Cisco switches and the model number that I need to purchase.

Total number of 48 Port Cisco switches that I requires is 12 numbers for all the 4 Comms cabinet.

Please  suggest, your help much appreciated.
lianne143Asked:
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Don JohnstonInstructorCommented:
By default, just about everyone uses a different STP than Cisco. I have always used 802.1s MSTP for inter-vendor networks.

That said, the Cisco 2960 series switches will do well I. Your situation.  They are available in different port counts.
Tony BalanquitCommented:
Hi lianne143,

As for core functions, the Cisco Catalyst 3850 would fit your requirements, It has next-generation Cisco IOS XE Software that is internally distributed into major subcomponents and each handles unique tasks such as core applications and other integrated applications. As for STP configuration, you might want to check this document.

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3850/software/release/3se/layer2/configuration_guide/b_lay2_3se_3850_cg/b_lay2_3se_3850_cg_chapter_010.html

Hope this helps.

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