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Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-21521-01
Chapter 38 Configuring IPv6 ACLs Configuring IPv6 ACLs
Creating IPv6 ACLs
Beginning in privileged EXEC mode, follow these steps to create an IPv6 ACL:
Command Purpose
Step 1 configure terminal Enter global configuration mode.
Step 2 ipv6 access-list
access-list-name Use a name to define an IPv6 access list and enter IPv6 access-list configuration mode.
Step 3a {deny | permit} protocol
{source-ipv6-prefix/prefix-l
ength | any | host
source-ipv6-address}
[operator [port-number]]
{destination-ipv6-prefix/
prefix-length | any |
host
destination-ipv6-address}
[operator [port-number]]
[dscp value] [fragments]
[log] [log-input] [routing]
[sequence value]
[time-range name]
Enter deny or permit to specify whether to deny or permit the packet if conditions are
matched. These are the conditions:
• For protocol, enter the name or number of an Internet protocol: ahp, esp, icmp,
ipv6, pcp, stcp, tcp, or udp, or an integer in the range 0 to 255 representing an
IPv6 protocol number.
Note For additional specific parameters for ICMP, TCP, and UDP, see Steps 3b
through 3d.
• The source-ipv6-prefix/prefix-length or destination-ipv6-prefix/ prefix-length is
the source or destination IPv6 network or class of networks for which to set deny
or permit conditions, specified in hexadecimal and using 16-bit values between
colons (see RFC 2373).
• Enter any as an abbreviation for the IPv6 prefix ::/0.
• For host source-ipv6-address or destination-ipv6-address, enter the source or
destination IPv6 host address for which to set deny or permit conditions, specified
in hexadecimal using 16-bit values between colons.
• (Optional) For operator, specify an operand that compares the source or
destination ports of the specified protocol. Operands are lt (less than), gt (greater
than), eq (equal), neq (not equal), and range.
If the operator follows the source-ipv6-prefix/prefix-length argument, it must
match the source port. If the operator follows the destination-ipv6-
prefix/prefix-length argument, it must match the destination port.
• (Optional) The port-number is a decimal number from 0 to 65535 or the name of
a TCP or UDP port. You can use TCP port names only when filtering TCP. You
can use UDP port names only when filtering UDP.
• (Optional) Enter dscp value to match a differentiated services code point value
against the traffic class value in the Traffic Class field of each IPv6 packet header.
The acceptable range is from 0 to 63.
• (Optional) Enter fragments to check noninitial fragments. This keyword is visible
only if the protocol is ipv6.
• (Optional) Enter log to cause an logging message to be sent to the console about
the packet that matches the entry. Enter log-input to include the input interface in
the log entry. Logging is supported only for router ACLs.
• (Optional) Enter routing to specify that IPv6 packets be routed.
• (Optional) Enter sequence value to specify the sequence number for the access list
statement. The acceptable range is from 1 to 4294967295.
• (Optional) Enter time-range name to specify the time range that applies to the
deny or permit statement.