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The message includes the access list number, whether the packet was permitted or denied; the protocol, whether it was TCP, UDP, ICMP or a number; and, if appropriate, the source and destination addresses and source and destination port numbers. The message is generated for the first packet that matches, and then at 5-minute intervals, including the number of packets permitted or denied in the prior 5-minute interval. log-input The logging facility might drop some logging message packets if there are too many to be handled or if there is more than one logging message to be handled in 1 second.

UDP port names can only be used when filtering UDP. TCP port names can only be used when filtering TCP. UDP port names can only be used when filtering UDP. (Optional) For the TCP protocol only: Indicates an established connection. A match occurs if the TCP datagram has the ACK or RST bits set. The nonmatching case is that of the initial TCP datagram to form a connection. (Optional) Causes an informational logging message about the packet that matches the entry to be sent to the console. ) The message includes the access list number, whether the packet was permitted or denied; the protocol, whether it was TCP, UDP, ICMP or a number; and, if appropriate, the source and destination addresses and source and destination port numbers.

The IP precedence is the three leftmost bits in the TOS octet of an IP precedence header (as defined in RFCs 1349, 1812, 2474 & 2873). This may be set using the route map or policy map command set ip precedence. Packets can be filtered by type of service level, as specified by a number from 0 tos to 15 or by name. The TOS Field is bits 3-6 in the TOS octet of IPv4 header [RFC 1349]. (Optional) Causes an informational logging message about the packet that log matches the entry to be sent to the console.

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