3Com 3CRUS2475 User Manual page 83

UDP — User Datagram Protocol (UDP). Communication protocol
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that transmits packets but does not guarantee their delivery.
ICMP — Internet Control Message Protocol (ICMP). The ICMP
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allows the gateway or destination host to communicate with the
source host. For example, to report a processing error.
IGMP — Internet Group Management Protocol (IGMP). Allows
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hosts to notify their local switch or router that they want to receive
transmissions assigned to a specific multicast group.
Flag Type — Indicates TCP flags by which the packet is classified.
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Flag Set —Sets the indicated TCP flag that can be triggered.
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ICMP Type — Specifies an ICMP message type for filtering ICMP
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packets.
ICMP Code —Specifies an ICMP message code for filtering ICMP
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packets. ICMP packets that are filtered by ICMP message type can also
be filtered by the ICMP message code.
IGMP Type — IGMP packets can be filtered by IGMP message type.
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Source — Defines the TCP/UDP source port to which the ACL is
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matched.
Destination — Defines the TCP/UDP destination port.
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DSCP —Matches the packet DSCP value to the ACL. Either the DSCP
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value or the IP Precedence value is used to match packets to ACLs. The
possible field range is 0-63.
IP - Prec. — Indicates matching ip-precedence with the packet
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ip-precedence value.
Action — Indicates the ACL forwarding action.
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Defining IP-based ACLs 83