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Assuming an ACL is active, when a packet arrives on the Avaya Multiservice switch, the parameters in the packet are compared to the parameters in the Access Rule starting with the lowest index number. If there is a match, that rule is applied to the packet and the search stops.
If the 5-tuple's of the packet and rule do not match, the next (higher index) rule is compared. This process continues until a match is found, or there are no more rules. There is an implied permit all at the end of every list. Therefore, if no match is found, the packet is forwarded with the priority un-changed.
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