I realize this discussion has already taken place in various forms and permutations; so here it is again. =)
We are currently shopping around w/different vendors to replace our switch infrastructure. We currently use Alcatel Omniswitch ATM and Alcatel OS/R ethernet switches. (Yes, we have an ATM core network too - but thats a different discussion)...
Looking to replace with a "next gen" ethernet equipment. Requirements for each switch:
19"/23" Rackmountable
Dual management/Redundant management
Dual (triple?) -48VDC Powered power supplies
Must be hot-swappable on every part (power, mgmnt, blades, interfaces etc..)
8+ Gigabit ports (1000Base"XX" Multimode and Singlemode capable)
32-64 ports 10/100/(1000?) copper each chassis
Out-of-band management capable (Seperate management ethernet interface if possible)
Should speak OSPF (for internal network management only)
Will *not* speak Public IP, we have Juniper Routers which will handle all that.
Should conform to all 802.1D Spanning Tree variants (incl PVST workarounds)
Should support Rapid-Convergence Spanning Tree/Fast Spanning Tree
Should support seperate uplinks (802.1w?)
Should support channeling/trunking multiple physical interfaces into one logical
Should support 802.1q priority re-mapping (re-doing p tags on the fly based on port, MAC, protocol, possibly source or dest IP, source/dest TCP or UDP port, etc..)
Must have 802.1q VLAN support for all 4096 802.1q tags, all ports
Should allow Q-in-Q or super-tagging (0x8100 inside another 0x8100 or 0x9100 type tagging)
Should be able to re-map VLANs per port (i.e. tag 1000 becomes tag 2000 when going out a different physical port)
Must allow large/jumbo/oversized frames (8k+)
Should allow MAC-level filtering (per port, per briding group, per VLAN, on source, destination, or wildcards on both)
Should allow rate-shaping per physical port (in, out, sum of both)
Should allow rate-shaping per VLAN (logical port, again, inbound, outbound, sum of both)
Probabaly looking at a modular design chassis, all cards should mix and match with the other products in the same family line.
Should support ATM interfaces (PVC to VLAN)
Should suppport POS interfaces (ethernet-over-PPP-over-SONET)
Should support 10G interfaces (future looking)
I am a tech, not a trader, so I can surely tell you - these guys know what they are doing.
Good prices with excellent perforrmance. They are much better than Cisco. They only "lack" the EIGRP support
Also, you can check the BATM switches (it is a new israeli company, but with a lot of potential to offer).
I would go for Foundry BI or NI series; we have very good experience with these equipment.
We have been using Cisco 6006 switches in the past but I find Foundry easyer to handle.