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Contents
- IPv6 ACL Extensions for Hop by Hop Filtering
- Finding Feature Information
- Information About IPv6 ACL Extensions for Hop by Hop Filtering
- ACLs and Traffic Forwarding
- How to Configure IPv6 ACL Extensions for Hop by Hop Filtering
- Configuring IPv6 ACL Extensions for Hop by Hop Filtering
- Configuration Example for IPv6 ACL Extensions for Hop by Hop Filtering
- Example: IPv6 ACL Extensions for Hop by Hop Filtering
- Additional References
- Feature Information for IPv6 ACL Extensions for Hop by Hop Filtering
IPv6 ACL Extensions for Hop by Hop Filtering
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 Information
- Information About IPv6 ACL Extensions for Hop by Hop Filtering
- How to Configure IPv6 ACL Extensions for Hop by Hop Filtering
- Configuration Example for IPv6 ACL Extensions for Hop by Hop Filtering
- Additional References
- Feature Information for IPv6 ACL Extensions for Hop by Hop Filtering
Finding Feature Information
Your software release may not support all the features documented in this module. For the latest feature information and caveats, see 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 document.
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 Filtering
ACLs and Traffic Forwarding
IPv6 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 Filtering
Configuring IPv6 ACL Extensions for Hop by Hop Filtering
DETAILED STEPS
Configuration Example for IPv6 ACL Extensions for Hop by Hop Filtering
Example: IPv6 ACL Extensions for Hop by Hop Filtering
Device(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 References
Related Documents
Technical Assistance
| Description | Link |
|---|---|
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The Cisco Support and Documentation website provides online resources to download documentation, software, and tools. Use these resources to install and configure the software and to troubleshoot and resolve technical issues with Cisco products and technologies. Access to most tools on the Cisco Support and Documentation website requires a Cisco.com user ID and password. |
Feature Information for IPv6 ACL Extensions for Hop by Hop Filtering
The 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.
| Table 1 | Feature Information for IPv6 ACL Extensions for Hop by Hop Filtering |
| Feature Name | Releases | Feature Information |
|---|---|---|
|
IPv6 ACL Extensions for Hop by Hop Filtering |
Cisco IOS Release XE 3.4S Cisco IOS Release XE 3.5S Cisco IOS Release XE 3.6S Cisco IOS Release XE 3.3SG |
Allows you to control IPv6 traffic that might contain hop-by-hop extension headers. The following commands were introduced or modified: deny (IPv6), permit (IPv6). |
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