Users Guide

• Use the no permit icmp {source mask | any | host ip-address} {destination mask
| any | host ip-address} command.
Parameters
source Enter the IP address of the network or host from which the packets were sent.
mask Enter a network mask in /prex format (/x) or A.B.C.D. The mask, when specied in
A.B.C.D format, may be either contiguous or noncontiguous.
any Enter the keyword any to match and drop specic Ethernet trac on the interface.
host ip-address Enter the keyword host and then enter the IP address to specify a host IP address.
destination Enter the IP address of the network or host to which the packets are sent.
type Enter the ICMP packet type. The following types are available:
For IPv4:
echo count
echo-reply count
host-unreachable count
host-unknown count
network-unknown count
net-unreachable count
packet-too-big count
parameter-problem count
port-unreachable count
source-quench count
time-exceeded count
For IPv6:
echo count
echo-reply count
nd-ns count
nd-na count
packet-too-big count
parameter-problem count
time-exceeded count
port-unreachable count
The ICMP packets cannot be ltered using mirroring ACL.
dscp Enter the keyword dscp to deny a packet based on the DSCP value. The range is 0 to
63.
message-type (OPTIONAL) Enter an ICMP message type, either with the type (and code, if necessary)
numbers or with the name of the message type. The range is 0 to 255 for ICMP type and
0 to 255 for ICMP code.
count (OPTIONAL) Enter the keyword count to count packets the lter processes.
byte (OPTIONAL) Enter the keyword byte to count bytes the lter processes.
log (OPTIONAL, E-Series only) Enter the keyword log to have the information kept in an
ACL log le.
order (OPTIONAL) Enter the keyword order to specify the QoS priority for the ACL entry.
The range is 0 to 254 (where 0 is the highest priority and 254 is the lowest; lower-order
numbers have a higher priority). If you do not use the keyword order, the ACLs have the
lowest order by default (255).
monitor (OPTIONAL) Enter the keyword monitor when the rule is describing the trac that you
want to monitor and the ACL in which you are creating the rule is applied to the
monitored interface.
212 Access Control Lists (ACL)