This link has a table about the middle of the page that may be useful. Here is a quote from the article: "As seen from the table above, depending on various design considerations, one can choose either UDLD or loop guard. The most noticeable difference between the two features in regards to the STP is the absence of protection in UDLD against STP failures caused by problems in software, resulting in the designated switch not sending BPDUs. It should be mentioned, however, that these types of failure are by orders of magnitude more rare than those caused by unidirectional links. In return, UDLD might be more flexible in case of unidirectional link on EtherChannel. In this case, UDLD will only disable failed links, and the channel should remain functional with remaining links. Loop guard will block (by putting it into loop inconsistent state) the whole channel in such failure." Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=15605&t=15568 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
