Manuals / 3Com / Computer Equipment / Switch

3Com 2500 manual Displaying UDP Helper Information

Models: 2500

1 186

Download 186 pages 56.34 Kb

Page 113

Administering UDP Helper

9-19

Displaying UDP Helper Information

	Top-Level Menu
	system
	ethernet
		interface
	fddi
		route		➧display
	atm
		arp
	bridge			define
		atmArpServer
	➧ip			remove
	ipx	multicast		hopCountLimit
		➧udpHelper
				threshold
	appletalk
		routing
	snmp
		icmpRouterDiscovery
	analyzer
		rip
	script
		ping
	logout
		statistics

You can display the hop count and threshold conﬁguration and list the ports with their IP forwarding addresses that are deﬁned for your LANplex system.

To display UDP Helper information, enter the following command string from the top level of the Administration Console:

ip udpHelper display

Example:

BOOTP relay hopcount limit is 4, BOOTP relay threshold is 0.

UDP port	forwarding address
67	<158.101.1.112

Deﬁning a Port and You can deﬁne port numbers and IP forwarding addresses for the UDP an IP Forwarding Helper. You may have up to 32 combinations of port numbers/IP forwarding

Address addresses per router. You may also have multiple IP address entries for the same ports.

Top-Level Menu

	system
	ethernet
		interface
	fddi	route		display
	atm
		arp		➧define
	bridge
		atmArpServer		remove
	➧ip
		multicast		hopCountLimit
	ipx
		➧udpHelper		threshold
	appletalk
		routing
	snmp
		icmpRouterDiscovery
	analyzer
		rip
	script
		ping
	logout
		statistics

To deﬁne port numbers and IP forwarding addresses:

1From the top level of the Administration Console, enter:

ip udpHelper define

2Enter the port numbers and IP forwarding addresses you want to deﬁne.

Removing a Port or	You can remove a port number or IP forwarding address deﬁned for UDP
an IP Forwarding	Helper.
Address	To remove a port number or IP forwarding address:
	To remove a port number or IP forwarding address:
Top-Level Menu

	system
	ethernet
		interface
	fddi
	atm	route		display
		arp
	bridge			define
		atmArpServer
	➧ip			➧remove
		multicast
	ipx			hopCountLimit
		➧udpHelper
	appletalk			threshold
	snmp	routing
		icmpRouterDiscovery
	analyzer
		rip
	script
		ping
	logout
		statistics

1From the top level of the Administration Console, enter:

ip udpHelper remove

2Enter the UDP port number that you want to remove.

3Enter the IP forwarding address that you want to remove.

The port numbers and IP forwarding addresses you speciﬁed are immediately removed.

Image 113

3Com 2500 manual Displaying UDP Helper Information, From the top level of the Administration Console, enter

Contents

Lanplex 2500 Extended Switching User Guide 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Contents Default Route Address Resolution Protocol ARP What Is Routing?Overlapped IP VLANs ExamplePruning Mbone Multicast Routing Algorithms FloodingDvmrp Metric Value Elements IPX RoutingAdministering Routes Administering interfaces LIS InterfacesAbout Aarp Displaying InterfacesDisplaying the ATM ARP Cache Deﬁning a Static Route10-2 10-311-2 Displaying Routes Displaying the Multicast Cache11-3 11-3 Modifying an InterfaceMIB Objects 13-4 Alarms What Is RMON?12-11 12-12Support from 3Com A-4 Returning Products for Repair A-4 About this Guide When you conﬁgure your LANplex 2500 systemIntroduction Monitoring RmonList conventions that are used throughout this guide ConventionsIcon Type Description Information Note InstructionsLANplex 2500 Documentation 801-00322-000 LANplex 2500 Software Release Notes2-5 , Module Installation GuidesAbout this Guide Switching FeaturesAbout LANplex ExtendedSwitching software Using MenusBridge Menu Hierarchy IP Menu Hierarchy IPX Menu Hierarchy Appletalk Menu Hierarchy Vlans on For the network administratorAbout VLANs Vlan concept in LAN technology helps minimize broadcastVlans on the Lanplex System Vlan Conﬁguration Protocol Suite SNA Services over Ethernet EthertypeEthertype, Snap PID DECnetLayer 3 Addressing Information Switch PortsAbout VLANs Index 1 2 Data received on VLAN, so the Default Vlan is usedIP port Source portDefault None So the Default Vlan is usedData received on Is flooded on Because XNS port System158.103.122.2 Data received on Is flooded on Because IP subnetOn port IP subnet 158.103.123.2About VLANs Example of a Protocol-Sensitive Vlan Conﬁguration Vlan Examples ExampleA Vlan Conﬁguration with Servers on Separate 100BASE-T ports ExampleVlans on the Lanplex System Lanplex System Bridging and RoutingSubnetted Architecture with LANplex Switching Hubs Multiple Ports per Subnets with the LANplex 2500 System Routing Models BridgingBridging in the Traditional Bridging and Routing Model Bridging in the LANplex Bridging and Routing Model Routing in the LANplex Bridging and Routing Model Bridging and Routing in the Lanplex System OSI Model Routing with IP TechnologyIP Routing Routing Elements of IPSection Hardware-conﬁgured 48-bit addressesAddress Classes How a Subnet Mask Is Applied to the IP Address Shows the routing table of the router in Figure Static Routes Dynamic Routes Using RIPExample of an ARP Cache Example of ARP Cache Updated with ARP Reply Transmission ErrorsClassical IP over Routing withForwarding to Nodes within an LIS ReferencesRouting with IP Technology Multicast Routing Routing with IP MulticastAbout IP Provider To a multicast routerTunnels on page 6 for more information about tunnels Multicast tunnel only if the Time-To-Live TTL value presentFlooding Spanning Trees Reverse Path Forwarding Algorithms routingShows a simple network with ﬁve links Simple Network Implemented Without Using Spanning TreeWhich are described in this section MulticastInterfaces Routing with IP Multicast Environment IPX RoutingNetWare NetWare Protocols and the OSI Reference Model Be provided by protocols above IPXProtocol RIP Shows the IPX packet format How IPX Routing Works IPX Packet Routing How IPX Routing Works Intranetwork Service Advertising Protocol SAPElements Shows an example of a typical routing information table Aging Timer The time since the network’s last updateInternetwork Service Information IPX Packet Format Routing with IPX Server Information Table Server Information Maintenance Elements of IPX Routing Routing with IPX About AppleTalk Routing in AN Appletalk EnvironmentAppleTalk NetworkNamed Entities AppleTalk Networks and AppleTalk Zones Protocols AppleTalk Protocols and the OSI Reference Model Routing in AN Appletalk Environment AppleTalk Protocols Network Router Interface AppleTalk Protocols Description language used by many printers About AarpMapping for both extended and nonextended networks Another probe packetAbout Aarp Routing in AN Appletalk Environment Displaying Vlan Information Administering VlansFrom the top level of the Administration Console, enter Describes these statistics Example of a detailed display for the VLANsFields for Vlan Information Description Index LayerDeﬁning Vlan Information Vlan Modifying Vlan InformationEnter the indexes for the VLANs you want to remove Example InformationRemoving Vlan Follow these steps to remove a Vlan deﬁnition Administering Vlans Administering Administering IP RoutingAdministering IP Routing Ip interface summary Ip interface detail Deﬁning an IP LIS Interface Example summary displayExample detail display LIS interface example with both PVCs and SVCs Atm Route Arp Detail Removing an Accept the default yes if you want to delete the interfaceModifying an Interface Removing an Advertisement Address Adding a Permanent Virtual Circuit PVC RoutesRemoving a Permanent Virtual Circuit PVC AutomaticallyInterface Status Information Description Direct Static Route was statically configured LearnedTiming out Timed outDisplaying Routing Table Flushing a Route Removing a RouteCorresponding MAC addresses Default route is immediately removed from the routing tableARP Cache Example display of the contents of the ARP cache String from the top level of the Administration ConsoleDisplaying the ARP CacheATM ARP Servers Administer the ATM ARP cacheFlushing the ARP Cache ARP cache entries are immediately removed from the tableRemoving an ATM ARP Server ATM switch, such as 3Com’s CELLplex 7000 systemIp atmArpServer arp Display Removing an ATM ARP Cache EntryUDP Helper Bootp including Dhcp = Time = DNS =Flushing the ATM Are modiﬁed and then forwarded through the routerDisplaying UDP Helper Information Enabling Disabling IP Routing Enabling Disabling Icmp Router Discovery Setting the RIPMode Operate in any of three modesYou may receive one of the following responses Pinging an IP StationEnter the IP address of the station you want to ping Describes the IP statistics Displaying IP StatisticsAdministering IP Routing IP Multicast Routing AdministeringEnabling Enabling and Disabling DvmrpDisabling Igmp Methods to make this determinationAdministering IP Example multicast interface conﬁguration From the top level of the Administration Console, enterRate Limit Enabling Multicast Interfaces Disabling Multicast InterfacesMulticast Tunnels Multicast Tunnels Administration Console, enterIP address of the remote multicast router DisplayingTunnel is removed Deﬁning a To deﬁne an IP multicast tunnel Multicast TunnelRemoving a Multicast Tunnel Describes the ﬁelds in the route display Displaying RoutesYou are prompted for the multicast source address Displaying the Multicast CacheFollowing display shows the multicast cache conﬁguration Describes the ﬁelds in the cache display Administering IP Multicast Routing Administering IPX Routing Address. Each address within the network should be unique Deﬁne an associated interfaceFormats and two Fddi encapsulation formats. The Ethernet Is available for communications Up or unavailable DownDeﬁning an IPX From the Administration Console top-level menu, enterIpx interface modify Known to the router Administration ConsoleRouters Segment. a tic is approximately 55 millisecondsConsole top-level menu, enter As well as the routing tableDeﬁning a Static Route Ipx route remove Servers Server table using the Administration ConsoleDeﬁning a Static Server Console top-level menu, enterEnter the number of hops to the server. Example From the Administration Console top-level menu, enterRemoving a Server To remove a server Flushing ServersForwarding Setting IPXEnhanced RIP SettingFollow the IPX router implementation guidelines Brackets, press Return at the promptEnter the SAP mode off, passive, or active. To use the value Setting the SAPStatistics DisplayingDescribers the IPX RIP statistics Example belowSAP Requests Describes the IPX SAP statisticsSAP Entries Number of servers in the server table Been receivedIpx statistics forwarding Describes the IPX forwarding statisticsLayer header errors Hdr ErrorsErrors in network layer header No RoutesAdministering Appletalk Routing Associated AppleTalk interface Deﬁning an Interface Displaying AppleTalk InterfacesRemoving an Interface Enter the zone nameAppletalk route display Following example shows a routing table display 12-7 Following example shows an Aarp cache display Removing an Entry To remove an Aarp cache entry Cache Displaying the Zone Table Zone Table by Zones Enter enable or disable at the promptConﬁguring Forwarding Enter enable or disable at the checksum veriﬁcation prompt Enter enable or disable at the checksum generation promptConﬁguring Checksum Pinging an AppleTalk NodeDescribes the AppleTalk DDP statistics you can view Following is an example of DDP summary statisticsDescribes the Rtmp statistics you can view Displaying Rtmp InformationAn example of summary statistics is shown below Displaying ZIP Information Describes the ZIP statistics you can view Displaying NBP Information Describes the NBP statistics you can view Remote Monitoring Rmon Technology Remote Monitoring Rmon and the Lanplex SystemRemote Monitoring Rmon Technology Remote Monitoring Rmon Technology Variable and trigger an alarm AlarmSegment being monitored HistoryInformation Base ManagementExample of an Rmon MIB Counter Object Instances of when counters exceed their set threshold AlarmsApplication for details on setting up alarms You misleading resultsManually Set Thresholds Generates an alarm only under the following conditions Appendix a Technical Support AppendixVariety of services. This appendix describes these services ServicesTechnical Support On-line TechnicalPress Return to see the 3ComForum Main menu Access by Digital ModemSupport from Maintenance, application training, and support servicesYour Network SupplierSupport contracts are available from 3Com U.S. and Canada, call 800 876-3266 for customer service3Com Numerics IndexSee also RIP See also SAP Mbone MIB See also Fddi station statistics Tunnels IP multicast 5-6