royalblues Sun, 03/30/2008 - 23:57
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Releases 12.1(8a)E and later support a 12-bit extended system ID field as part of the bridge ID (see Table 11-2). Chassis that support only 64 MAC addresses always use the 12-bit extended system ID. On chassis that support 1024 MAC addresses, you can enable use of the extended system ID. STP uses the VLAN ID as the extended system ID


http://www.cisco.com/univercd/cc/td/doc/product/core/cis7600/121_8aex/swcg/spantree.htm#44429


HTH

Narayan

joseph.derrick Mon, 03/31/2008 - 13:03
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Thank you very much for your reply. I will go through the link and read a bit regarding the information.

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