356 CHAPTER 7: CONFIGURING AUTHENTICATION, AUTHORIZATION, AND ACCOUNTING PARAMETERS
3 To enable counting of packets filtered by an ACL, select Enable Hit
Count.
4 Define the IP attributes (source and destination IP addresses, the TOS, and
the precedence). The steps are the same as the steps when configuring
an IP ACE. See step 6 on page 351 through step 9 on page 352.
5 In the Type box, specify the ICMP type used to filter ICMP packets.
The value range for ICMP types is -1 to 255. The default value is -1, which
indicates that all ICMP packets are subject to the ACE regardless of ICMP
type.
Table 23 lists some common ICMP types. For a complete list of ICMP
types, see www.iana.org/assignments/icmp-parameters.
6 If the ICMP type you specified in step 5 has codes available, type the code
in the Code box.
7 Click Finish.
Table 23 ICMP Messages and Codes
ICMP Message (Type Number) Code (Number)
Echo Reply (0) None
Destination Unreachable (3) ■ Network Unreachable (0)
■ Host Unreachable (1)
■ Protocol Unreachable (2)
■ Port Unreachable (3)
■ Fragmentation Needed (4)
■ Source Route Failed (5)
Source Quench (4) None
Redirect (5) ■ Network Redirect (0)
■ Host Redirect (1)
■ TOS and Network Redirect (2)
■ TOS and Host Redirect (3)
Echo (8) None
Time Exceeded (11) ■ TTL Exceeded (0)
■ Fragment Reassembly Time Exceeded
(1)
Parameter Problem (12) None
Timestamp (13) None
Timestamp Reply (14) None
To Next Page
Loading...
