3Com C36460T, 86-0621-000 software manual Notation

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Routing Protocols and Services Notes

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CPU Utilization with XNS When the PathBuilder S5xx switch is configured for 2048 tunnels and XNS Protocol protocol, very high CPU utilization will occur.

IPX to Non-IPXA mechanism does not exist to prevent adding a path from a non-IPX routing port Configuration Error to an IPX routing port. If this situation occurs, the router stops routing IPX traffic, even though the primary port has been up the whole time. To restart IPX routing,

re-enable the port.

IPX Routing, Route When you route IPX over a Frame Relay meshed topology and configure the SAP Receive and Route Route Receive and Route Advertisement policies on the Frame Relay port, these

Advertisement Policies policies do not take effect until the SAP table is flushed.

Managing IP Address When assigning IP address to virtual ports of directly connected networks, it is Assignment important to ensure that the assigned address is valid. As LCP supports multiple

Network Control Protocols (NCPs), IP does not verify that the address is valid before bringing the port state up or down, as there may be other protocols which are utilizing that port. It is possible to have an UP port state, yet have a lack of IP connectivity.

NAT Service - Many to NAT Many to One Outbound does not translate properly when multiple addresses, One Outbound on LHS, are specified using comma (,) notation. But NAT Many to One Outbound Translation translates properly when multiple addresses, on LHS, are specified in 10.3.1.0/24

notation.

NAT Service - TCP/UDP When the NETBuilder bridge/router is configured to use TCP/UDP Port Mapping Port Mappings from port 23 (Telnet) to any other port number, the first command executed over

the session will fail due to extra characters inserted into the command string. All subsequent commands issued for that session will succeed. If you encounter this problem, execute the command again.

OSPF Route If your network is expecting more than 4000 OSPF routes you need to set the Advertisement ospfholdtime variable to 30.

PIM-Sparse Mode In Release 11.4, PIM-SparseMode does not look into the BGP routing table for RPF (reverse path forwarding) lookups. RPF lookups for IP addresses reachable only via BGP will result in RPF failures.

This has the following implications.

A PIM-SM router will drop multicast data packets sent from a source reachable only via BGP.

PIM-SM Rendezvous Points which are reachable only via BGP will not get added to the local RendezvousPoint set (the set of routers capable of functioning as PIM-SM RPs).

PIM-SMCisco IOS currently forwards the boot strap router (BSR) message packets without Enterprise OS/Cisco modifying the source IP address field. This implementation is incompatible with

Incompatibility 3Com Enterprise OS and there is no workaround when a PIM-SM domain contains both Cisco IOS and 3Com Enterprise OS devices.

PIM-SM Register Cisco IOS currently sends register packets with register checksum on the entire IP Checksum Formats payload, and IOS rendezvous points (RPs) also expect register checksums done on

the entire IP payload. However, 3Com Enterprise OS devices generate register

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Contents Enterprise OS Software Version 11.4 Release Notes Bayfront Plaza 3Com CorporationSanta Clara, California 95052-8145Contents Maximum BSC Line Speed Shdlc Half-Duplex Mode IBM-Related Services in Token RingDial Idle Timer Appn Connections to 3174 through Token RingMicrosoft Mppe Patches and Updates Firmware Configuration Firmware UpdatePM-SM Not Supported Over Nbma Media RouteDiscovery Total Control Security and Accounting Server AvailabilityWindows NT MS-CHAP Authentication Platform Notes Requirements Approved Dram SIMMsToken Ring+ Modules Token Ring Auto Start-up Enterprise OS Software Version 11.4 Release Notes SuperStack II NETBuilder SI IP/IPX Router with 56-bit Encryption JEOfficeConnect NETBuilder IP/IPX Router JW OfficeConnect FeaturesNETBuilder SuperStackNon-Broadcast, Multi-Access Nhrp for VPN Tunnels Public-Key Infrastructure PKI ImplementationIP Payload Compression Protocol IPComp or Ippcp Tunnel Switching Between Different Tunnel Types Protocol Independent Multicast-Sparse Mode PIM-SMOspf External Route Aggregation Multicast Border Router MBR IGMPv2 EnhancementsPPP over Ethernet PPPoE Many-to-One NAT Enhancement Virtual Router Redundancy Protocol Vrrp for Virtual LAN VlanBandwidth on Demand with Incoming Traffic IP Quality of Service IPQoSNew Features and Feature Enhancements Class-Based Queuing CBQ Management Voice Over Frame Relay VoFR Upgrade Utilities & Upgrade Link Voice Over VPN VoVPNWeb Link Enhancements Performance Management Currently available statistics are Autotargeting for SLA Monitoring/Remote PollingAudit Log Messaging Enhancements Console Output in Telnet SessionsDomain Name Use in FTP and Tftp Commands Secure VPN Manager versionPKI Manager version Features of PKI Manager version Feature NETBuilder II Software FeaturesVersion 11.4 for the NETBuilder and PathBuilder platforms Bridge/RouterBritss Appn LNM LAA NETBuilder II Firmware Requirements NETBuilder II Firmware RequirementsMemory Requirements ModulePackages AX-APPN/Connection ServicesBF- Boundary Router NW-IP/IPX/AT RouterDlsw 16 MB 24 MB Software Package Feature PathBuilder S5xx Series Switches Software FeaturesLNM LAA Switch PPTP/L2TP R2R, VLL PathBuilder S400 Series Switches Software Features Britss Appn LNM LAA 16 MB For Dual Images Bridge/RoutersIsdn BRI Isdn PRI Isdn T1/E1 Isdn CT1/CE1 Isdn T3/E3 OfficeConnect NETBuilder Bridge/Router Software FeaturesVirtual Ports Restricted Number of Dhcp 256 Addresses RE-Multiprotocol Router with 56-bit Encryption RW-Multiprotocol RouterRS-Multiprotocol Router with 128-bit Encryption and 3DES 10/ST bridge/routerSwitching/Tunneling WANExtender MP6E Module Fast Ethernet 100Base ATM Module/ Lane Software Package CF for TE for Feature Model SuperStack II NETBuilder Token Ring Software FeaturesSmds Memory Requirements Ruuhp114.Z Solaris 2.5 platformsHP-UX 10.x platforms Ruuaix114.ZUpgrade Manager Version 11.4 UpgradeExecuting Profile.batEtc/passwd. You must add an entry can be ignored EncryptionLicenseRead Environment VariableDLSw Bridge Static RoutesResizing Upgrade Link WindowAppn Connections to ThroughDLSw CONNectUsage Parameter Default Change Leaf Node Sessions SupportNumber of DLSw Circuits Front-End Number of TCP ConnectionsRelay port is HPR and ISRIBM-Related Feature Settings for Token Ring Ports Token Ring Frame Copy Errors Frame Copy Errors under LAN Net Manager3Com Bridge/Routers and Supported Features Mode Service PointATM LAN Emulation ATM Emulated LANsClients and Large FramesPorts in DCE Mode ValueHistory, the PPP link does not come up Disaster Recovery on Dial Idle TimerPorts Without Leased LinesSupported Synchronous Modem Supported Asynchronous ModemsModems ModemNotation Boot Cycle Ascii BootBootP Server Bootptab FileThan 8k to the policy These messages do not indicate a problem and can be ignoredRunOnBootFail Remote Access25bis Modem Setup SchedulerVPN Protocols and Services Notes Page Order Numbers for Memory Upgrade Kits Adequate Dram and Flash memory installed prior to shipmentPlatforms. The topics are presented in alphabetical order Memory RequirementsSnmp Management T3 Bandwidth LimitationBAud value to 16,000 or 4,000 to avoid this situation 3Com-approved 20 MB Flash Memory Cards