Reference Guide

694 | IPv6 Access Control Lists (IPv6 ACLs)
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Usage
Information
The number of entries allowed per ACL is hardware-dependent. Refer to your line card documentation
for detailed specification on entries allowed per ACL.
Related
Commands
permit
c e
Select an IPv6 protocol number, ICMP, IPv6, TCP, or UDP to configure a filter that match the filter
criteria.
Syntax
permit {ipv6-protocol-number | icmp | ipv6 | tcp | udp}
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 {ipv6-protocol-number | icmp | ipv6 | tcp | udp} command.
Parameters
Defaults
Not configured.
Command Modes
ACCESS-LIST
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
show config View the current configuration.
ip-protocol-number
Enter an IPv6 protocol number.
Range: 0 to 255
icmp Enter the keyword icmp to filter Internet Control Message Protocol version 6.
ipv6 Enter the keyword ipv6 to filter any Internet Protocol version 6.
tcp Enter the keyword tcp to filter the Transmission Control protocol.
udp Enter the keyword udp to filter the User Datagram Protocol.
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).