I have to put together a quick design for a small datacenter. Below you will see a diagram of my network so far. As far as switching goes, I have two Cisco 3550-12Gs configured with HSRP, these are my distribution switches. I have two domains, domain1 and domain2, both domains are on their own vlan. I am trunking the uplink ports on all switches to the distribution switches. At the moment I have this setup in a lab and everything is working. I just want to make sure that I have HSRP, VTP, and STP configured correctly before I go changing this in production. I will attach my configurations of the distribution switches so you can see my HSRP config. As far as VTP goes, the Core Switch and the Distribution Switches are VTP Servers, and all other switches are VTP Clients. All Switches are on the same VTP Domain and have the same password. As far as Spanning-Tree goes, I have done nothing, all STP settings are default. Please have look and let me know what you think. Any suggestions for improving this setup would be appreciated. Thanks.