In 802.1d spanning tree, the BPDU contains a number of fields
including the "Port ID".  THis is a two byte value where one
octet contains a priority value and the second byte contains
a value assigned to each port.

For some of the higher density switches, (55xx, 65xx), one can
have more then 256 ports on a switch.  

It looks like cisco has "extended" the 802.1d standard to allow
for these higher density port counts by using 10 of this field's
16 bits for port identification and 6 bits for priority.

What impact, if any, does this have on 802.1d operation in a
multi-vendor environment?

Is the 802.1d standard being updated to address the limitation
in the current 802.1d standard?

Thanks




Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=32697&t=32697
--------------------------------------------------
FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]

Reply via email to