Cisco Systems OL-4387-02 manual Mpls

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Appendix B SSG Implementation Notes

Table B-1 SSG Implementation Notes for the Cisco 10000 Router (continued)

SSG Feature

Implementation Notes

Local Forwarding

Cannot be enabled or disabled through the CLI.

 

Only seven services (network sets) can be bound to an uplink interface. If a

 

service cannot be created on the toaster, then no connection is created.

 

A service cannot be bound by interface to a broadcast interface. If such a service

 

is configured, the toaster does not see this network in the VRF and might drop

 

traffic to the service. Binding to a next-hop on a broadcast interface is allowed.

 

If two users are connected to services on the same uplink interface, traffic

 

between the users is allowed and all host features are applied (which are the “in”

 

features of the first user and the “out” features of the second user).

 

If an ACL contains more than eight ACEs, the toaster does not apply the ACL;

 

however, the segment continues to exist.

 

 

MPLS

Disabled on SSG interfaces.

 

 

Open Garden

Service bindings not required for services directly connected to the router.

 

Service bindings are required for any services routed through a next-hop address.

 

RADIUS accounting records not created for Open Garden services.

 

Open Garden services must be created through local profiles, RADIUS profiles

 

are not supported.

 

Overlapping of Open Garden networks is not supported.

 

 

Per Service

Connection-level statistics are not collected for the default network or for Open

Statistics

Garden networks.

 

You cannot display aggregate statistics for a user.

 

For PPP-based users, any link-level control traffic (such as keepalives) are

 

counted separately from the data traffic to support idle timeouts.

 

 

Port-Bundle

The router supports this feature for Cisco SESM Release 3.1(1) or later. The

Host Key

feature is disabled by default.

 

A default network must be configured and routable from SSG.

 

To enable this feature, you must reload SSG and restart SESM.

 

You must separately enable this feature at SESM and at all connected SSG nodes.

 

For each SESM server, all connected SSG nodes must have the same port-bundle

 

length. When you change the port-bundle length, the change does not take effect

 

until after the router reloads.

 

All SSG source IP addresses configured using the ssg port-map source ip

 

command must be routable in the management network where SESM resides.

 

See the “Restrictions for SSG Port-Bundle Host Key” section on page 6-7for

 

additional implementation notes.

 

 

PPPoA

The router supports only one host per interface.

Connections

The customer premises equipment (CPE) must be configured for PAT.

 

 

 

Prepaid Services

Only time-based quotas are supported. Quotas are always measured in seconds.

 

Quotas based on data volume are not supported. If configured, traffic might exceed

 

the quota.

 

 

Cisco 10000 Series Router Service Selection Gateway Configuration Guide

 

B-2

OL-4387-02

 

 

 

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Contents Corporate Headquarters Copyright 2004, Cisco Systems, Inc All rights reserved N T E N T S IiiConfiguration Example for SSG AutoDomain Configuration Example for SSG Open Garden Configuration of VPI/VCI Static Binding to a Service Profile SSG Unconfig ViiViii Audience About This GuideDocument Organization Document Conventions Obtaining Documentation Related DocumentationCisco.com Documentation CD-ROM Documentation FeedbackObtaining Technical Assistance Ordering DocumentationTAC Case Priority Definitions Cisco TAC WebsiteOpening a TAC Case XiiiObtaining Additional Publications and Information XivService Selection Gateway Overview Service Selection GatewaySSG Topology Example Default Network Access ProtocolsSupported SSG Features SSG RestrictionsService Selection Gateway Overview SSG Restrictions SSG Prerequisites SSG Architecture ModelService Selection Gateway Overview SSG Architecture Model OL-4387-02 Scalability and Performance Limitations and RestrictionsScalability 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 Example 3-1 SSG Autologoff Using ARP Ping SSG Prepaid Idle TimeoutConfiguration Example for SSG Autologoff Example 3-2 SSG Autologoff Using Icmp PingService Authorization Service ReauthorizationConfiguration of SSG Prepaid Idle Timeout Restrictions for SSG Prepaid Idle TimeoutPrerequisites for SSG Prepaid Idle Timeout Configuration Example for SSG Prepaid Idle TimeoutExample 3-7 SSG Threshold Volume SSG Session and Idle TimeoutExample 3-5 SSG Service-Specific TCP Redirect Example 3-6 SSG Threshold TimeRestrictions for SSG Full Username Radius Attribute Authentication and AccountingSSG Full Username Radius Attribute Example 4-1 Radius Freeware Format ExampleExample 4-3 Radius Accounting-Start Record Account Login and LogoutRadius Accounting Records Example 4-4 Radius Accounting-Stop RecordService Connection and Termination Authentication and Accounting Radius Accounting Records PPP Terminated Aggregation Service Selection MethodsPTA-Multidomain Web Service Selection Restrictions for PTA-MDSesm and SSG Performance OL-4387-02 Service Connection SSG AutoDomainConfiguration 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 Configuration Example for SSG Prepaid SSG Open GardenSSG Port-Bundle Host Key Configuration of SSG Open GardenConfiguration Example for SSG Open Garden Restrictions for SSG Open GardenRestrictions for SSG Port-Bundle Host Key Exclude Networks Mutually Exclusive Service SelectionConfiguration of SSG Port-Bundle Host Key Prerequisites for SSG Port-Bundle Host KeyConfiguration of Mutually Exclusive Service Selection OL-4387-02 Service Profiles Downstream Access Control ListDomain Name Upstream Access Control ListService Authentication Type Full UsernameService Mode Service-Defined CookieService Description Service Next-Hop GatewayService Profile Example Cached Service ProfilesType of Service Example 7-1 Service ProfileConfiguration of Cached Service Profiles OL-4387-02 SSG Hierarchical Policing Overview SSG Hierarchical PolicingSSG Hierarchical Policing Token Bucket Scheme SSG Hierarchical Policing Configuration Restrictions for SSG Hierarchical PolicingConfiguration Examples for SSG Hierarchical Policing Example 8-2 Enabling Per-Session Policing on a RouterOL-4387-02 Interface Configuration Transparent PassthroughAccess Side Interfaces For exampleNetwork Side Interfaces Configuration of Transparent PassthroughMulticast Protocols on SSG Interfaces Restrictions of Transparent PassthroughConfiguration of Multicast Protocols on SSG Interfaces SSG TCP Redirect Redirection for Unauthenticated Users10-1 Redirection for Unauthorized Services 10-2Initial Captivation 10-3Prerequisites for SSG TCP Redirect Configuration of SSG TCP RedirectRestrictions for SSG TCP Redirect 10-4Example 10-1 Binding a Server Group to a Port 10-5Example 10-2 Limiting Redirected TCP Sessions Configuring SSG TCP Redirect 10-6Example 10-3 Defining a Captive Portal Server Group Configuration Examples for SSG TCP Redirect10-7 Example 10-4 Defining Network Lists10-8 Example 10-5 Defining Port ListsVPI/VCI Static Binding to a Service Profile Miscellaneous SSG Features11-1 Radius Virtual Circuit Logging AAA Server Group Support for Proxy ServicesConfiguration of Radius Virtual Circuit Logging 11-2Packet Filtering 11-3Restrictions for Packet Filtering Downstream Access Control List-outaclUpstream Access Control List-inacl 11-4Configuration Example for Packet Filtering SSG UnconfigConfiguration of Packet Filtering Restrictions for SSG UnconfigConfiguration Examples for SSG Unconfig Prerequisites for SSG UnconfigConfiguration of SSG Unconfig 11-6Service Translation SSG Enhancements for Overlapping Services11-7 11-8 Restrictions for Service Translation 11-9Configuration of Service Translation 11-10Expansion of Service IDs 11-11Network Sets 11-12Monitoring and Maintaining SSG 12-1Restrictions for Per-Service Statistics Troubleshooting RadiusPer-Service Statistics 12-2Monitoring the Parallel Express Forwarding Engine 12-312-4 SSG Configuration Example Figure A-1 SSG Example TopologyExample A-1 Cisco 10000 Router SSG Configuration Username cisco password 0 cisco clock timezone PSTSsg accounting interval 300 ssg profile-cache Full-duplex Peer default ip address pool SSG-POOL Exec-timeout 0 0 password lab SSG Feature Implementation Notes SSG Implementation NotesMpls Also see the Restrictions for SSG TCP Redirect section on OL-4387-02 O S S a R Y GL-1GL-2 GL-3 GL-4 GL-5 GL-6 D E IN-1DSL G-1 IN-2ISP G-2 L2TP IN-3Radius IN-4Reauthorizing prepaid IN-5TCP IN-6VRF G-5 VSA IN-7IN-8
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