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Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide Version 14.0 Last Updated May 31, 2013 Americas Headquarters Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 http://www.cisco.com Tel: 408 526-4000 800 553-NETS (6387) Fax: 408 527-0883 Text Part Number: OL-28188-02...
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About this Guide This document pertains to the features and functionality that run on and/or that are related to the Cisco® ASR 5000 Chassis. Conventions Used The following tables describe the conventions used throughout this documentation. Icon Notice Type Description Information Note Provides information about important features or instructions.
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This chapter provides an overview of the Enhanced Wireless Access Gateway (eWAG). The following topics are covered in this chapter: Introduction Product Overview Feature Description How it Works Dependencies and Limitations Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide ▄ OL-28188-02...
The unique advantages of the eWAG include: The Cisco® ASR 5000 Series chassis on which the eWAG is deployed is a very high capacity chassis that can support millions of subscribers on a single chassis. Therefore, a single chassis is likely to support large session/capacity requirements for many years to come.
MPC access from WLAN Platform Requirements The eWAG service is supported on Cisco® ASR 5000 Series chassis running StarOS. The chassis can be configured with a variety of components to meet specific network deployment requirements. For additional information, refer to the Installation Guide for the chassis and/or contact your Cisco account representative.
Combo eWAG + TTG deployment on the same ASR 5000 chassis. Combo eWAG + TTG + GGSN deployment on the same ASR 5000 chassis. Important: For information on dependencies and limitations of these deployment options see the...
GTP tunnel to GGSN. eWAG resolves the APN to get the GGSN address to which to create the GTP tunnel. In this release, the PDP context will be created with a dynamic IP address. Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide ▄ OL-28188-02...
DSCP marking. Each traffic class is mapped to QCI value according to mapping mentioned in TS 23.203. Therefore, DSCP values must be configured for different QCI values. The following table lists mapping for traffic class to QCI. Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide ▄ OL-28188-02...
APN name is configured in the profile in service configuration. If that default APN is not configured, the call is dropped. Important: Note that in all cases only the NI part (as in the APN definition) needs to be specified as APN name in eWAG. ▄ Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide OL-28188-02...
GGSN. The maximum limit for the number of GGSN addresses that can be retried is 31. Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide ▄ OL-28188-02...
(for NAT) and GGSN (for DPI, NAT, P2P, and others) work without any issues. For more information on virtual-APN support in eWAG + GGSN combo deployments refer to the Dependencies and Limitations section. ▄ Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide OL-28188-02...
Note that the “SN-WLAN-AP-Identifier” AVP is available only in the “starent” RADIUS dictionary. Therefore, UE Location Information support is available only if eWAG uses the “starent” RADIUS dictionary, if not eWAG will ignore the AVP. Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide ▄ OL-28188-02...
With this capability, operators can configure threshold on these resources whereby, should resource depletion cross the configured threshold, an SNMP Trap will be sent. ▄ Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide OL-28188-02...
SNMP trap are generated. A threshold tolerance dictates the percentage under the configured threshold that must be reached in order for the condition to be cleared. An SNMP trap is then triggered. Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide ▄ OL-28188-02...
Recovery framework is same as used by other products. A minimum of four PSCs (three active and one standby) is required in an ASR 5000 chassis to support the Session Recovery feature. This is because the DEMUX Manager and VPN Manager tasks run on a PSC where no SessMgr runs when session recovery is enabled and one PSC is used as standby PSC.
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Enhanced Wireless Access Gateway Overview ▀ How it Works Figure 2. Session Setup Call Flow ▄ Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide OL-28188-02...
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Accounting-Start message. It also assigns a default QoS value for the eWAG session if not available in the Accounting-Start message. Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide ▄ OL-28188-02...
Until then, eWAG will drop Accounting-Interim with different AVP values. This section presents call flow for session setup using accounting-interim scenario. ▄ Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide OL-28188-02...
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Enhanced Wireless Access Gateway Overview How it Works ▀ Figure 3. Session Setup using Accounting-Interim Call Flow Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide ▄ OL-28188-02...
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The eWAG identifies the GGSN to connect to using the same 3G procedure of identifying GGSN from SGSN/TTG using DNS resolution. The eWAG then sends the Create PDP Context Request message to the GGSN to create the GTP tunnel. ▄ Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide OL-28188-02...
Accounting-Start message is for new subscriber with different Username+MSISDN combo. Important: In case of session replacement, old call will be disconnected with the session disconnect reason “IPSG-session-replacement”. Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide ▄ OL-28188-02...
This section presents call flows for setup failure scenarios. A call setup request via Accounting-Start can fail due to any of the following reasons: Mandatory AVP Missing No Resource GTP Tunnel Setup Failure ▄ Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide OL-28188-02...
The eWAG does not generate any CoA RADIUS Request to Wi-Fi AAA as the eWAG acts as a RADIUS accounting server towards Wi-Fi AAA and not as an authorization server. Figure 7. Session Update Call Flow – GGSN-initiated Update PDP Context ▄ Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide OL-28188-02...
SGSN GPRS Tunneling Protocol (SGTP) service is configured. However, in the ASR 5000 chassis the eWAG operates based on APN profile. This means that when the GGSN (used for connecting to APN) is also configured on the same chassis, it will use the same APN profile used by the eWAG (assuming that the subscriber is connecting through eWAG to reach that APN using the collocated GGSN).
Dependencies and Limitations ▀ Note that in the ASR 5000 chassis the virtual-APN selection can be based on other criteria apart from access gateway (AGW) address selection like MSISDN range, RAT type, and so on. eWAG uses only AGW address criteria, which is the RADIUS accounting-client from which the initial Accounting-Start message is received.
If new GGSN call comes up with same IMSI, the GTPCMgr will always setup the new call on the same SessMgr where the call is previously present. If a new call comes up with the same IMSI and same NSAPI, the context replacement will happen at GGSN. ▄ Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide OL-28188-02...
This chapter provides information on configuring the Enhanced Wireless Access Gateway (eWAG) service. The following topics are covered in this chapter: Before You Begin eWAG Configuration eWAG Administration Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide ▄ OL-28188-02...
Translation Administration Guide. Also, confirm that the required license is installed. 4. Confirm that the eWAG license is installed. The eWAG is a licensed Cisco product. Separate session and feature licenses may be required. Contact your Cisco account representative for information on licensing requirements.
Multiple eWAG services must not be configured in the same context as they will not be able to differentiate between uplink and downlink packets. Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide ▄ OL-28188-02...
<radius_client_ipv4/ipv6_address> | <radius_client_ipv4/ipv6_address/mask> } Notes: In the ASR 5000 chassis, virtual APN selection can be based on other criteria apart from Access Gateway address ( ) selection, such as the MSISDN range, RAT type, and so on. However, only...
Configuring Routing Rules and NAT ALG Configuring ECS Rulebase with Firewall-and-NAT Policy To specify the Firewall-and-NAT policy in an ECS rulebase use the following configuration: configure active-charging service <ecs_service_name> rulebase <rulebase_name> fw-and-nat default-policy <fw_nat_policy_name> ▄ Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide OL-28188-02...
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Notes: For more information on ECS ruledef and rulebase configurations, refer to the Enhanced Charging Service Administration Guide. Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide ▄ OL-28188-02...
Apart from the IPSG and System schema, as needed you can also configure variables available in the other schema, including: APN: For Access Point Name (APN) related statistics Card: For card-level statistics ▄ Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide OL-28188-02...
Control feature, refer to the Congestion Control chapter of the System Administration Guide. In the above configuration, the Congestion Control thresholds featured are at the system level and are not specific to eWAG. eWAG supports only critical threshold values. Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide ▄ OL-28188-02...
A valid feature key is required for this configuration. This command enables/disables the feature to try to perform hitless session recovery for all session types supported by the software release. After enabling session recovery through this configuration, make sure that session recovery status is “ready”. ▄ Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide OL-28188-02...
For more information on Monitor Protocol and Monitor Subscriber, refer to the System Administration Guide. Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide ▄ OL-28188-02...
The following filters are available for monitor subscriber based logging in eWAG. By MSID/IMSI By IP Address By MSISDN Next-IPSG Call By Username ▄ Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide OL-28188-02...
To view ECS statistics for specific analyzer. show active-charging analyzer statistics name <analyzer_name> show active-charging rulebase name To view ECS statistics for specific rulebase. <rulebase_name> show active-charging subsystem all To view detailed ECS subsystem-level information. Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide ▄ OL-28188-02...
RAI identifying Wi- Fi network, otherwise currently only eWAG-configured value is used and this attribute is ignored. Acct-Session-Id Accounting Session Identifier string. Acct-Session- Time Acct-Status- Type Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide ▄ OL-28188-02...
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Contains LAC_CI of the WLAN Identifier Access Point. eWAG uses the information in filling ULI of CPC. SN-WLAN-UE- Contains MAC address of the UE. Identifier eWAG sends it in IMEIsV of CPC. User-Name ▄ Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide OL-28188-02...