3Com 11.1 manual Number of TCP Connections, Front-End, IBM Boundary Routing

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46NETBUILDER SOFTWARE VERSION 11.1 RELEASE NOTES

parameter settings. The practical limit may be lower and depends on the traffic load, CPU, and memory usage by other services.

Table 14 DLSw Circuit Maximums with CONNectionUsage Parameter Settings

 

Maximum Number of DLSw Circuits

System

Low

Medium

High

 

 

 

 

OfficeConnect and SuperStack II

190

390

790

NETBuilder bridge/routers

 

 

 

Boundary router peripheral node*

n/a

n/a

790†

NETBuilder II bridge/router

 

 

 

DPE modules

390

790

7990

 

 

 

 

*The CONNectionUsage parameter is set to High by the Boundary Router Peripheral node software; it cannot be changes.

†The IBM Boundary Router peripheral node uses two LLC2 circuits to support one LLC2 end system. Therefore, the maximum number of LLC2 end systems supported by an IBM Boundary Router peripheral node is 395.

Number of TCP Connections

3Com LLC2 tunneling uses one TCP connection for each LLC2 session. DLSw scales to large networks better than LLC2 tunneling because it multiplexes all LLC2 sessions over one TCP connection per tunnel. Each Telnet session also uses one TCP connection. Table 15 shows the maximum number of TCP connections possible with the different CONNectionUsage parameter settings. The practical limit may be lower and depends on the traffic load, CPU, and memory usage by other services.

Table 15 TCP Circuit Maximums with CONNectionUsage Parameter Settings

 

Maximum Number of TCP Circuits

System

Low

Medium

High

 

 

 

 

OfficeConnect and SuperStack II

32

256

512

NETBuilder bridge/routers

 

 

 

Boundary router peripheral node*

n/a

n/a

790

NETBuilder II bridge/router

 

 

 

DPE module

32

512

2048

*The CONNectionUsage parameter is set to High by the Boundary Router peripheral node software; it cannot be changed.

Front-End

The maximum number of FradMap entries that may be defined for each Frame

Processor/Frame Relay

Relay port is 50.

Access for LLC2 Traffic

 

History Compression Not

A port using Async PPP (AT dial) cannot be configured for history compression. The

Allowed With Async PPP

user interface will not prevent you from configuring the port for history com-

 

pression, however, if history compression is selected the path will not come up.

HPR and ISR

High Performance Routing (HPR) is enabled by default. Therefore, if you are

Configurations

configuring APPN Intermediate Session Routing (ISR), you must disable HPR on

 

both the PortDef and the AdjLinkSta parameters by setting HPR = No.

IBM Boundary Routing

In an IBM Boundary Routing topology that uses disaster recovery through PPP

Topology Disaster

(when two paths are mapped to one port), a disruption to existing SNA and

Recovery

 

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Contents NETBuilder Family Software Version 11.1 Release Notes Bayfront Plaza 3Com CorporationSanta Clara, California 95052-8145Contents Web Link Documentation Path Zmodem Time Out Known Problems Bcmfdinteg File Conversion ConsiderationsCPU Utilization Statistic Deleting ATM Neighbors NAT Proxy ARP RouteDiscovery Sdhlc Half-Duplex Mode Web Link Login SupportDisplaying Configuration Profiles Dynamic Paths Limitations Accm Not ConfigurableCONFiguration Authentication Header AHConfiguring IPsec How IPsec Works PoliciesStatPollInterval Encryption Netbuilder Software Version Release NotesPackages Contact 3Com or your network supplierSupported PC Flash Memory Cards New ProductsLists 3Comapproved vendors of the PC flash memory card Approved 20 MB Flash Memory CardsVPN Features Layer Two Tunneling Protocol New FeaturesApproved Dram SIMMsAdditional RAS Enhancements Extensible Authentication ProtocolDhcp Proxy Encryption StrengthSummary of Encryption Strengths Virtual Circuit PrioritizationEncryption Key Algorithm Package ID LengthIP Version 6 Phase Firewall EnhancementsBGP-4 Enhancements Frame Relay PVC Q.933 Support Ospf Not-So-Stubby-Area NssaData Over Voice B-Channel Isdn Specification Boundary Router Remote LAN DetectionToken Ring in Fast Ethernet Tife Features Ascii Boot56/64K CSU/DSU External Loopback NETBuilder Web Link ImprovementsApplication Notes Upgrade Management Utilities and NETBuilder Upgrade LinkFlash Load Placing a Data OverToggle the respective paths. Type ExampleNew Features Application Notes NETBuilder II Software Features SoftwareVersion 11.1 for the NETBuilder bridge/router platforms NETBuilder II Firmware Requirements Other FeaturesNETBuilder II Firmware Requirements IBM ProtocolsSuperStack II NETBuilder SI Software Features 458 438SuperStack II NETBuilder Ethernet and Token Ring Features Models Features Token RingMemory Requirements Models Features Token Ring WAN Protocols OfficeConnect NETBuilder Software FeaturesModel and Software Package 112 132 111 145 131112 131 120 132 Additional OfficeConnect NETBuilder Models Software Features 117 137 116136 Memory Requirements Ruuhp111.1 Utilities for the Solaris 2.5 platformsUtilities for the HP-UX 10.x platforms Ruuaix111.1NETBuilder Upgrade Management Utilities Etc/passwd. You must add an entry can be ignored Known IssuesBridge Static Routes PROfile ServiceDLSw SVCsToken Ring a non-source routed frame Dialog boxes will be fully visible without scrollingSupported Asynchronous Modems Ports in DCE ModeSupported Synchronous Modem ModemsHistory, the PPP link does not come up IBM-Related Feature Settings for Token Ring Ports Token Ring Frame Copy Errors Frame Copy Errors under LAN Net Manager3Com Bridge/Routers and Supported Features Known Problems Interrupt the boot cycle and enter monitor mode This systemValue SHow !profileID -PROFILE CONFiguration Notation Known Problems ADD !v1 -PPP ARU user, password Limitations Number of TCP Connections Processor/Frame Relay Relay port is Access for LLC2 TrafficFront-End IBM Boundary RoutingMultilink PPP SpeedPort running PPP Snmp ManagementSdlc Adjacent Link Service Point Source-RouteStations for Appn Source RouteSoftware Update Pages Using Netbuilder FamilyProcedures in this section describe how to configure IPsec Configuring IpsecConfiguring IPsec Replace with this chapterOn bridge/router, 2 enter Creating an Encryption PolicyCreating a Security Policy On bridge/router 2, enterManual key information, use For example, to create a new encryption key set, enterConfidentiality and data integrity To disable Ipsec on port 1, enterAssign an IP address to the tunnel virtual port by entering Enable Layer 2 Tunnelling by enteringCreate a route between the two tunnel endpoints by entering Configure an Ipsec policy/security association by enteringHow IPsec Works Enable Layer 2 Tunnelling Pptp by enteringCreate a route between two tunnel endpoints by entering Intercepted and viewedHow IPsec Works Configuring Ipsec Reference for Netbuilder Family CONFiguration Ipsec Service ParametersIpsec Service Parameters and Commands CONTrolKeySet ManualPOLicy ManualKeyInfoPolicyname Name you assign to the policy you are adding Is assigned dynamically using Ipcp or DhcpBe all or ALL Srcipaddr/maskPhase of the encrypt-decrypt-encrypt Encrypt phases, and the second 8 bytes for the decryptSpecifies Cipher Block Chaining mode of the Data 239.255.255.254Ipsec Service Parameters Rsvp Service Parameters REQuest MaxFlowRateRESerVation UDPEndcapSR Service Parameters AllRoutesPlace this page in front of Chapter ROUte ROUte SR Service Parameters SYS Service Parameters SYS Service Parameters StatPollInterval Weblink Service ParametersWeblink Service Parameters
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