Command Reference Guide

720 | IPv6 Access Control Lists (IPv6 ACLs)
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Defaults
Not configured.
Command Modes
ACCESS-LIST
Command
History
permit icmp
c e s
Configure a filter to allow all or specific ICMP messages.
Syntax
permit icmp {source address mask | any | host ipv6-address} {destination address | any | host
ipv6-address} [message-type] [count [byte]] | [log] [monitor]
To remove this filter, you have two choices:
• Use the
no seq sequence-number command syntax if you know the filter’s
sequence number or
• Use the
no permit icmp {source address mask | any | host ipv6-address} {destination
address
| any | host ipv6-address} command.
Parameters
tcp
Enter the keyword tcp to filter the Transmission Control protocol.
udp
Enter the keyword udp to filter the User Datagram Protocol.
Version 8.3.7.0 Introduced support on the S4810
source address
Enter the IPv6 address of the network or host from which the packets
were sent in the x:x:x:x::x format followed by the prefix length in the /x
format.
Range: /0 to /128
The :: notation specifies successive hexadecimal fields of zero.
mask
Enter a network mask in /prefix format (/x).
any
Enter the keyword any to specify that all routes are subject to the filter.
host ipv6-address
Enter the keyword host followed by the IPv6 address of the host in the
x:x:x:x::x format.
The :: notation specifies successive hexadecimal fields of zero
destination address
Enter the IPv6 address of the network or host to which the packets are
sent in the x:x:x:x::x format followed by the prefix length in the /x
format.
Range: /0 to /128
The :: notation specifies successive hexadecimal fields of zero.
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.
Range: 0 to 255 for ICMP type; 0 to 255 for ICMP code
count (OPTIONAL) Enter the keyword count to count packets processed by
the filter.
byte (OPTIONAL) Enter the keyword byte to count bytes processed by the
filter.