IPv6 ACL Extensions for Hop by Hop Filtering
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IPv6 ACL Extensions for Hop by Hop FilteringLast Updated: September 20, 2012
The IPv6 ACL Extensions for Hop by Hop Filtering feature allows you to control IPv6 traffic that might contain hop-by-hop extension headers. You can configure an access-control list (ACL) to deny all hop-by-hop traffic or to selectively permit traffic based on protocol.
Finding Feature InformationYour software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table at the end of this module. Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required. Information About IPv6 ACL Extensions for Hop by Hop FilteringACLs and Traffic ForwardingIPv6 ACLs determine what traffic is blocked and what traffic is forwarded at device interfaces. ACLs allow filtering based on source and destination addresses, inbound and outbound to a specific interface. Use the ipv6 access-list command to define an IPv6 ACL, and the deny (ipv6) and permit (ipv6) commands to configure its conditions. The IPv6 ACL Extensions for Hop by Hop Filtering feature implements RFC 2460 to support traffic filtering in any upper-layer protocol type. How to Configure IPv6 ACL Extensions for Hop by Hop FilteringConfiguring IPv6 ACL Extensions for Hop by Hop FilteringSUMMARY STEPS
DETAILED STEPS Configuration Example for IPv6 ACL Extensions for Hop by Hop FilteringExample: IPv6 ACL Extensions for Hop by Hop FilteringDevice(config)# ipv6 access-list hbh_acl Device(config-ipv6-acl)# permit tcp any any hbh Device(config-ipv6-acl)# permit tcp any any Device(config-ipv6-acl)# permit udp any any Device(config-ipv6-acl)# permit udp any any hbh Device(config-ipv6-acl)# permit hbh any any Device(config-ipv6-acl)# permit any any Device(config-ipv6-acl)# hardware statistics Device(config-ipv6-acl)# exit ! Assign an IP address and add the ACL on the interface. Device(config)# interface FastEthernet3/1 Device(config-if)# ipv6 address 1001::1/64 Device(config-if)# ipv6 traffic-filter hbh_acl in Device(config-if)# exit Device(config)# exit Device# clear counters Clear "show interface" counters on all interfaces [confirm] Device# ! Verify the configurations. Device# show running-config interface FastEthernet3/1 Building configuration... Current configuration : 114 bytes ! interface FastEthernet3/1 no switchport ipv6 address 1001::1/64 ipv6 traffic-filter hbh_acl in counter end Additional ReferencesRelated DocumentsTechnical Assistance
Feature Information for IPv6 ACL Extensions for Hop by Hop FilteringThe following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature. Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its affiliates in the U.S. and other countries. To view a list of Cisco trademarks, go to this URL: www.cisco.com/go/trademarks. Third-party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1110R) Any Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be actual addresses and phone numbers. Any examples, command display output, network topology diagrams, and other figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses or phone numbers in illustrative content is unintentional and coincidental. © 2012 Cisco Systems, Inc. All rights reserved.
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