- Overview of the Intelligent Wireless Access Gateway
- IP Sessions Over Gigabit EtherChannel
- Multiple-Flow Tunnel
- Service Provider WiFi: Support for Integrated Ethernet Over GRE
- GTPv2 Support in the iWAG
- iWAG SSO Support for GTP
- Configuring ISG Policy Templates
- Cisco ISG Accounting Accuracy for LNS Sessions
- Call Admission Control
- iWAG Dual-Stack IPoE Session
- Flow-Based Redirect
- Web Authentication Support for iWAG-GTP
- QoS on Ethernet over GRE Tunnels
- PMIP MAG SSO
- iWAG-GTP: S2a Interface Support and High Availability Enhancements
- DHCP Option 82 Remote ID Format
- VLAN ID Based Policy Control
- EoGRE iWAG Subscriber Roaming
- EoGRE: Inter-chassis HA
- Call Flows for Simple IP Users
- Call Flows for 3G and 4G Mobile IP Users
- iWAG Scalability and Performance
Multiple-Flow Tunnel
A tunnel facilitates bidirectional transport or acts as a conduit for forwarding subscriber traffic. In PMIPv6, subscriber traffic is transported between the MAG and the Local Mobility Anchor (LMA) through the Generic Routing Encapsulation (GRE) tunnel. In the GTP, subscriber traffic is transported between the iWAG and the GGSN through the GTP tunnel. The tunnel information structure is associated with each tunnel and specifies common tunnel attributes, such as source address, destination address, protocol, port, key, tunnel transport VRF, and tunnel mode.
- Finding Feature Information
- Information About Multiple-Flow Tunnel
- Additional References
- Feature Information for Multiple-Flow Tunnel
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 Multiple-Flow Tunnel
Both the GTP and PMIPv6 support multiple flows per tunnel. A multiple-flow tunnel mechanism configures and manages multiple flows of traffic within the same tunnel. Each flow is identified by a flow key. A flow identifier or flow key is a 32-bit integer. The key is globally unique per system for the GTP. However, the key can be unique per tunnel for PMIPv6. The flow key for the GTP is the Tunnel Endpoint Identifier (TEID), and for PMIPv6, it is the GRE key. Each flow has parameters to describe the per-flow attributes.
PMIPv6 uses a multipoint GRE tunnel per LMA, and creates one adjacency per flow. An LMA can support scaling numbers up to 128,000 MAG. From the LMA perspective, only one multipoint GRE tunnel interface is created and 128,000 tunnel endpoints are populated. This scaling level supports the MAG functionality that is implemented on access points or hotspots, from which only one or few PMIPv6 subscribers can be attached. Cisco high-end routing platforms, such as the Cisco ASR 1000 Series Route Processor 2, the Cisco ASR 1000 Series 40-Gbps ESP, and the Cisco ASR 1000 Series 100-Gbps ESP support 128,000 scaling for the LMA.
To support 128,000 scaling, configure the following on the LMA:
ipv6 mobile pmipv6-lma LMA1 domain D1 bce maximum 128000
Additional References
Related Documents
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Related Topic |
Document Title |
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Cisco IOS commands |
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iWAG commands |
Cisco IOS Intelligent Wireless Access Gateway Command Reference |
MIBs
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MIB |
MIBs Link |
|---|---|
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No new or modified MIBs are supported by this feature. |
To locate and download MIBs for selected platforms, Cisco software releases, and feature sets, use Cisco MIB Locator found at the following URL: |
Technical Assistance
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Description |
Link |
|---|---|
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The Cisco Support website provides extensive online resources, including documentation and tools for troubleshooting and resolving technical issues with Cisco products and technologies. To receive security and technical information about your products, you can subscribe to various services, such as the Product Alert Tool (accessed from Field Notices), the Cisco Technical Services Newsletter, and Really Simple Syndication (RSS) Feeds. Access to most tools on the Cisco Support website requires a Cisco.com user ID and password. |
Feature Information for Multiple-Flow Tunnel
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.|
Feature Name |
Releases |
Feature Information |
|---|---|---|
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Multiple-Flow Tunnel |
Cisco IOS XE Release 3.9S |
In Cisco IOS XE Release 3.9S, this feature was implemented on the Cisco ASR 1000 Series Aggregation Services Routers. |
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