Having done a bit of research here on CCO, I am curious about something. the information regarding number of vlans supported in the Cisco Products Quick Reference Guide seem to have been hastily done. For example, the 6000 series states 4000 vlans are supported, the 4000 series states 1000 vlans are supported, and the 3500 and 3550 series gives no info.
Some CCO switch documentation states that there can be 4096 vlans, 4095 vlans, or 4094 vlans, depending upon the particular switch documentation one looks at. On the other hand, it looks to me like the 802.1t extensions to spanning tree reserve 12 bits for vlan identification, meaning that there can be values of zero ( all bits zero ) through 4095 ( all bits set to one ) Since there is no vlan zero that I have ever seen anywhere, I presume that is by standard. One of the CCO documents states that the 4095 value is "reserved", meaning that one may have vlans numbered 1 through 4094 Is this the correct conclusion to jump to? Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=51280&t=51280 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
