Cisco Systems OL-4387-02 manual Multicast Protocols on SSG Interfaces, Network Side Interfaces

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Chapter 9 Interface Configuration

Multicast Protocols on SSG Interfaces

Network Side Interfaces

For network side interfaces, SSG uplink interfaces can accept and forward both SSG traffic and transparent passthrough traffic. The SSG software classifies the traffic as transparent passthrough. An interface that is not configured as an SSG uplink can receive transparent passthrough traffic or traffic destined for Cisco IOS interfaces. The traffic is handled using normal Cisco IOS processing.

Typically, SSG uses transparent passthrough access control lists (ACLs) to allow unauthenticated traffic to be routed through normal Cisco IOS processing. However, the Cisco 10000 series router does not require transparent passthrough ACLs (see the “Restrictions of Transparent Passthrough” section on page 9-3).

The following Cisco-AV pair attributes are used to configure transparent passthrough ACLs:

•Downstream Access Control List (outacl)—Specifies either a Cisco IOS standard ACL or an extended ACL to be applied to downstream traffic going to the user.

•Upstream Access Control List (inacl)—Specifies either a Cisco IOS standard ACL or an extended ACL to be applied to upstream traffic coming from the user.

For more information about transparent passthrough ACLs, refer to the Service Selection Gateway, Release 12.2(15)B feature module.

Restrictions of Transparent Passthrough

SSG uplink interfaces can accept and forward both SSG traffic and transparent passthrough traffic. Typically, transparent passthrough ACLs are used to prevent downstream SSG traffic from being forwarded by Cisco IOS software. However, the Cisco 10000 series router does not require transparent passthrough ACLs; therefore, SSG hosts that have not been authorized for specific services might be able to receive traffic from those services. If the host attempts to send traffic, the packets are dropped until authentication occurs.

Configuration of Transparent Passthrough

Transparent passthrough is always enabled for SSG VRFs for uplink interfaces.

Multicast Protocols on SSG Interfaces

SSG supports multicast traffic, which includes normal multicast packets and Internet Group Management Protocol (IGMP) packets. The multicast traffic is separate from the SSG traffic and is routed through normal Cisco IOS processing and features; it is not routed through SSG authentication or features such as per-service statistics or hierarchical policing.

SSG interfaces can simultaneously receive multicast traffic and normal SSG traffic such as traffic to and from the default network, Open Garden network, and service networks. The normal SSG traffic is routed through SSG features and processing.

Cisco 10000 Series Router Service Selection Gateway Configuration Guide

 

OL-4387-02

9-3

 

 

 

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Contents Corporate Headquarters Copyright 2004, Cisco Systems, Inc All rights reserved Iii N T E N T SConfiguration Example for SSG AutoDomain Configuration Example for SSG Open Garden Configuration of VPI/VCI Static Binding to a Service Profile Vii SSG UnconfigViii Audience About This GuideDocument Organization Document Conventions Obtaining Documentation Related DocumentationCisco.com Obtaining Technical Assistance Documentation FeedbackDocumentation CD-ROM Ordering DocumentationOpening a TAC Case Cisco TAC WebsiteTAC Case Priority Definitions XiiiXiv Obtaining Additional Publications and InformationService Selection Gateway Service Selection Gateway OverviewSSG Topology Example Access Protocols Default NetworkSSG Restrictions Supported SSG FeaturesService Selection Gateway Overview SSG Restrictions SSG Architecture Model SSG PrerequisitesService Selection Gateway Overview SSG Architecture Model OL-4387-02 Limitations and Restrictions Scalability and PerformanceScalability and Performance Limitations and Restrictions Single Host Logon SSG Logon and LogoffPrerequisites for Single Host Logon SSG Autologoff Configuration of SSG AutologoffRestrictions for SSG Autologoff Configuration Example for SSG Autologoff SSG Prepaid Idle TimeoutExample 3-1 SSG Autologoff Using ARP Ping Example 3-2 SSG Autologoff Using Icmp PingService Reauthorization Service AuthorizationPrerequisites for SSG Prepaid Idle Timeout Restrictions for SSG Prepaid Idle TimeoutConfiguration of SSG Prepaid Idle Timeout Configuration Example for SSG Prepaid Idle TimeoutExample 3-5 SSG Service-Specific TCP Redirect SSG Session and Idle TimeoutExample 3-7 SSG Threshold Volume Example 3-6 SSG Threshold TimeSSG Full Username Radius Attribute Authentication and AccountingRestrictions for SSG Full Username Radius Attribute Example 4-1 Radius Freeware Format ExampleRadius Accounting Records Account Login and LogoutExample 4-3 Radius Accounting-Start Record Example 4-4 Radius Accounting-Stop RecordService Connection and Termination Authentication and Accounting Radius Accounting Records PPP Terminated Aggregation Service Selection MethodsPTA-Multidomain Restrictions for PTA-MD Web Service SelectionSesm and SSG Performance OL-4387-02 SSG AutoDomain Service ConnectionConfiguration Example for SSG AutoDomain Configuration of SSG AutoDomainRestrictions for SSG AutoDomain Example 6-2 AutoDomain Exclude Profile SSG VSA Format Example 6-1 SSG AutoDomainExample 6-3 AutoDomain Exclude File Format SSG Prepaid Configuration of SSG PrepaidRestrictions for SSG Prepaid SSG Open Garden Configuration Example for SSG PrepaidConfiguration Example for SSG Open Garden Configuration of SSG Open GardenSSG Port-Bundle Host Key Restrictions for SSG Open GardenRestrictions for SSG Port-Bundle Host Key Configuration of SSG Port-Bundle Host Key Mutually Exclusive Service SelectionExclude Networks Prerequisites for SSG Port-Bundle Host KeyConfiguration of Mutually Exclusive Service Selection OL-4387-02 Downstream Access Control List Service ProfilesService Authentication Type Upstream Access Control ListDomain Name Full UsernameService Description Service-Defined CookieService Mode Service Next-Hop GatewayType of Service Cached Service ProfilesService Profile Example Example 7-1 Service ProfileConfiguration of Cached Service Profiles OL-4387-02 SSG Hierarchical Policing Overview SSG Hierarchical PolicingSSG Hierarchical Policing Token Bucket Scheme Restrictions for SSG Hierarchical Policing SSG Hierarchical Policing ConfigurationExample 8-2 Enabling Per-Session Policing on a Router Configuration Examples for SSG Hierarchical PolicingOL-4387-02 Transparent Passthrough Interface ConfigurationFor example Access Side InterfacesMulticast Protocols on SSG Interfaces Configuration of Transparent PassthroughNetwork Side Interfaces Restrictions of Transparent PassthroughConfiguration of Multicast Protocols on SSG Interfaces SSG TCP Redirect Redirection for Unauthenticated Users10-1 10-2 Redirection for Unauthorized Services10-3 Initial CaptivationRestrictions for SSG TCP Redirect Configuration of SSG TCP RedirectPrerequisites for SSG TCP Redirect 10-4Example 10-1 Binding a Server Group to a Port 10-5Example 10-2 Limiting Redirected TCP Sessions 10-6 Configuring SSG TCP Redirect10-7 Configuration Examples for SSG TCP RedirectExample 10-3 Defining a Captive Portal Server Group Example 10-4 Defining Network ListsExample 10-5 Defining Port Lists 10-8VPI/VCI Static Binding to a Service Profile Miscellaneous SSG Features11-1 Configuration of Radius Virtual Circuit Logging AAA Server Group Support for Proxy ServicesRadius Virtual Circuit Logging 11-211-3 Packet FilteringUpstream Access Control List-inacl Downstream Access Control List-outaclRestrictions for Packet Filtering 11-4Configuration of Packet Filtering SSG UnconfigConfiguration Example for Packet Filtering Restrictions for SSG UnconfigConfiguration of SSG Unconfig Prerequisites for SSG UnconfigConfiguration Examples for SSG Unconfig 11-6Service Translation SSG Enhancements for Overlapping Services11-7 11-8 11-9 Restrictions for Service Translation11-10 Configuration of Service Translation11-11 Expansion of Service IDs11-12 Network Sets12-1 Monitoring and Maintaining SSGPer-Service Statistics Troubleshooting RadiusRestrictions for Per-Service Statistics 12-212-3 Monitoring the Parallel Express Forwarding Engine12-4 Figure A-1 SSG Example Topology SSG Configuration ExampleUsername cisco password 0 cisco clock timezone PST Example A-1 Cisco 10000 Router SSG ConfigurationSsg accounting interval 300 ssg profile-cache Full-duplex Peer default ip address pool SSG-POOL Exec-timeout 0 0 password lab SSG Implementation Notes SSG Feature Implementation NotesMpls Also see the Restrictions for SSG TCP Redirect section on OL-4387-02 GL-1 O S S a R YGL-2 GL-3 GL-4 GL-5 GL-6 IN-1 D EIN-2 DSL G-1IN-3 ISP G-2 L2TPIN-4 RadiusIN-5 Reauthorizing prepaidIN-6 TCPIN-7 VRF G-5 VSAIN-8
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