- Implementing IPv6 Addressing and Basic Connectivity
- Implementing ADSL for IPv6
- Implementing Bidirectional Forwarding Detection for IPv6
- Implementing DHCP for IPv6
- Implementing EIGRP for IPv6
- Configuring First Hop Redundancy Protocols in IPv6
- Implementing IPsec in IPv6 Security
- Implementing IS-IS for IPv6
- Implementing IPv6 for Network Management
- Implementing IPv6 over MPLS
- Implementing IPv6 VPN over MPLS
- Implementing IPv6 Multicast
- PIMv6 Anycast RP Solution
- Implementing Multiprotocol BGP for IPv6
- Implementing NAT-PT for IPv6
- Implementing OSPFv3
- Implementing Policy-Based Routing for IPv6
- Implementing QoS for IPv6
- Implementing RIP for IPv6
- Implementing Selective Packet Discard in IPv6
- Implementing Static Routes for IPv6
- Implementing Traffic Filters for IPv6 Security
- IPv6 ACL Extensions for Hop by Hop Filtering
- Implementing Tunneling for IPv6
- IPv6 Virtual Fragmentation Reassembly
- IPv6 RFCs
IPv6 Implementation Guide, Cisco IOS XE Release 3S
- Updated:
- July 12, 2017
Chapter: IPv6 Virtual Fragmentation Reassembly
IPv6 Virtual Fragmentation Reassembly
Finding Feature Information
Your 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 Virtual Fragmentation Reassembly
IPv6 Virtual Fragmentation Reassembly
Fragmentation is a process of breaking down an IP datagram into smaller packets to be transmitted over different types of network media. Non-initial fragments of a fragmented IPv6 packet is used to pass through IPsec and NAT64 without any examination due to the lack of the L4 header, which usually is only available on the initial fragment. The IPv6 Virtual Fragmentation Reassembly (VFR) feature provides the ability to collect the fragments and provide L4 info for all fragments for IPsec and NAT64 features.
How to Implement IPv6 Virtual Fragmentation Reassembly
Configuring IPv6 Virtual Fragmentation Reassembly
DETAILED STEPS
Configuration Example for IPv6 Virtual Fragmentation Reassembly
Example: Configuring IPv6 Virtual Fragmentation Reassembly
Router# show ipv6 virtual-reassembly interface gigabitethernet1/1/1
GigabitEthernet1/1/1:
IPv6 Virtual Fragment Reassembly (VFR) is ENABLED(in)
Concurrent reassemblies (max-reassemblies): 64
Fragments per reassembly (max-fragments): 16
Reassembly timeout (timeout): 3 seconds
Drop fragments: OFF
Current reassembly count: 0
Current fragment count: 0
Total reassembly count: 6950
Total reassembly timeout count: 9
GigabitEthernet1/1/1:
IPv6 Virtual Fragment Reassembly (VFR) is ENABLED(out)
Concurrent reassemblies (max-reassemblies): 64
Fragments per reassembly (max-fragments): 16
Reassembly timeout (timeout): 3 seconds
Drop fragments: OFF
Current reassembly count: 0
Current fragment count: 0
Total reassembly count: 0
Total reassembly timeout count: 0
Additional References
Related Documents
| Related Topic | Document Title |
|---|---|
| IPv6 addressing and connectivity |
IPv6 Configuration Guide |
| Cisco IOS commands |
|
| IPv6 commands |
|
| Cisco IOS IPv6 features |
IPv6 Feature Mapping |
Standards and RFCs
| Standard/RFC | Title |
|---|---|
| RFCs for IPv6 |
IPv6 RFCs |
Technical Assistance
| Description | Link |
|---|---|
| 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 Virtual Fragmentation Reassembly
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 Virtual Fragmentation Reassembly |
| Feature Name | Releases | Feature Information |
|---|---|---|
| IPv6 Virtual Fragmentation Reassembly |
Cisco IOS XE Release 3.4S |
The IPv6 VFR feature provides the ability to collect the fragments and provide L4 info for all fragments for IPsec and NAT64 features. |
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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.
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