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The before 1 portion of the ACE places it before any others in the ACL,
so it has precedence over any later ACEs for any parameter settings that
are met.
For more information about changing the order of ACEs or otherwise
modifying security ACLs, see "Modifying a Security ACL" on page 246.
For information about TOS and precedence levels, see the
Switch and Controller Command
Service" on page 235.
ICMP includes many messages that are identified by a type field. Some
also have a code within that type. Table 23 lists some common ICMP
types and codes. For more information, see
www.iana.org/assignments/icmp-parameters.
Table 23 Common ICMP Message Types and Codes
ICMP Message Type (Number) ICMP Message Code (Number)
Echo Reply (0)
Destination Unreachable (3)
Source Quench (4)
Redirect (5)
Echo (8)
Time Exceeded (11)
Parameter Problem (12)
Timestamp (13)
Timestamp Reply (14)
Information Request (15)
Information Reply (16)
Creating and Committing a Security ACL
Reference. For CoS details, see "Class of
None
Network Unreachable (0)
Host Unreachable (1)
Protocol Unreachable (2)
Port Unreachable (3)
Fragmentation Needed (4)
Source Route Failed (5)
None
Network Redirect (0)
Host Redirect (1)
Type of Service (TOS) and Network Redirect
(2)
TOS and Host Redirect (3)
None
Time to Live (TTL) Exceeded (0)
Fragment Reassembly Time Exceeded (1)
None
None
None
None
None
237
Wireless LAN
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