Users Guide

seq
Assign a sequence number to a deny or permit the lter in an IPv6 access list while creating the lter.
Syntax
seq sequence-number {deny | permit} {ipv6-protocol-number | icmp | ip | tcp
| udp} {source address mask | any | host ipv6-address} {destination address
| any | host ipv6-address} [operator port [port]] [count [byte]] | [log]
[monitor]
To delete a lter, use the no seq sequence-number command.
Parameters
sequence-number Enter a number from 0 to 4294967290.
deny Enter the keyword deny to congure a lter to drop packets meeting this
condition.
permit Enter the keyword permit to congure a lter to forward packets meeting this
criteria.
ipv6-protocol-
number
Enter an IPv6 protocol number. The range is 0 to 255.
icmp Enter the keyword icmp to congure an Internet Control Message Protocol
version 6 lter.
ipv6 Enter the keyword ipv6 to congure any Internet Protocol version 6 lter.
tcp Enter the keyword tcp to congure a Transmission Control protocol lter.
udp Enter the keyword udp to congure a User Datagram Protocol lter.
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 prex length in the /x format. The range is /0
to /128. The :: notation species successive hexadecimal elds of zero.
mask Enter a network mask in /prex format (/x).
any Enter the keyword any to specify that all routes are subject to the lter.
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 species successive hexadecimal elds of zero.
operator (OPTIONAL) Enter one of the following logical operands:
• eq = equal to
• neq = not equal to
• gt = greater than
• lt = less than
• range = inclusive range of ports (you must specify two ports for the port
parameter.)
port port (OPTIONAL) Enter the application layer port number. Enter two port numbers if
using the range logical operand. The range is 0 to 65535.
The following list includes some common TCP port numbers:
• 23 = Telnet
• 20 and 21 = FTP
918
IPv6 Access Control Lists (IPv6 ACLs)