Here are some answers:
""Urooj's Hi-speed Internet"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Hi Folks, > Can someone please answer my following questions regarding various IEEE > Standards that have been advanced to enhance the Spanning Tree Protocol: > > 1. Has some vendor implemented the 802.1V, 802.1W, and 802.1X standards in > their equipment ? Sure, some vendors have implemented it. Not just any vendor, but most notably, Cisco has partially implemented 802.1w in the 6500, the 4000, and related switches. 802.1x has been implemented into several of the lower-end Cat switches, Ciscosecure ACS, and should be integrated into the 4000/6000 shortly. As far as other vendors are concerned, I believe Foundry has implemented 802.1w in some of its higher-end products. Enterasys too. Some of the authentication server vendors like Funk support 802.1x also. Most of the wireless LAN vendors support or have announced that they are implementing support of 802.1x into their gear.. As far as 802.1v is concerned, I don't think any of the larger vendors have shown any interest, leaving it to small players like Marvell and others. > > 2. If yes, then has it resulted in addition of more switching commands to > augment STP implementation ? I take it you are talking only about 802.1w (dot1v and dot1x have nothing to do with STP). Not really, at least not yet, because the present-day implementations are not flexible at all. Foundry has commands to turn RSTP on and off. Cisco has completely integrated RSTP into MST and has no special RSTP commands. I expect this to change in the future as vendors integrate more tuning features. > > 3. With STP enhancements, is there a possibility that Ethernet networks can > rival SONET's restoration times of 50msec or less in practical reality ? Probably not at the moment. 802.1w offers significantly faster failover, but not that fast. It definitely helps, though, and combined with other features might indeed offer SONET-like restoration. > > Any information will be welcome. TIA. > > Aziz S. Islam Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=40004&t=39920 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
