Cabletron Systems 1200 User Manual
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EXAMPLE NETWORKS

CONFIGURE THECYBERSWITCH

Note: The software should have already been installed and you should see the system prompt before proceeding with these steps.

Using the detailed instructions for these steps found in the Simple Remote Bridging chapter, complete the following configuration steps.

Start the CFGEDIT program

Select physical resources

Select to add a resource

Select Switch type to be 4ESS

Select to add a line

Enter “Line1” as the line name

Select slot 1, port 1

Add Data Links

Choose Auto TEI Negotiation

Enter SPID Value

Enter Directory Number for Data Link

Enter Maximum Number of Digits to Verify

Repeat “Add Data Links” for second Data Link

Repeat “Select to add a line” for each additional line

The following sections provide instructions for completing the remaining configuration steps.

CONFIGURING THECYBERSWITCH OPTIONS

To begin the configuration of the system options, press 2 at the Main Menu. The following options menu will then be displayed:

Options Menu:

1)Bridging

2)IP

3)IPX Routing

4)AppleTalk

5)SNMP

6)PPP

7)Call Control Options

8)Default Line Protocol

9)Log Options

10)Compression

Select function from above or <RET> for previous menu:

For this example, we only need IP routing enabled. IP routing is already enabled as fault, so no change is necessary.

For this example, the only other IP information we need to configure is for IP interfaces. No static routes are needed because Router 1 supports RIP, which eliminates the need to manually configure a static route. The next section will provide the instructions needed to configure the necessary IP interfaces.

36 CyberSWITCH

IP ROUTINGNETWORK

Configure the CyberSWITCH

CONFIGURING THEIP INTERFACEINFORMATION

In our example, we need to configure three types of interfaces (refer to the Network Topology Worksheet). The LAN type network interface represents the system connection to the IP Network 128.1.0.0 on the LAN. The WAN (Direct Host) interface is a logical extension of the LAN IP network. Direct Host remote IP devices share the same IP address space as the IP network 128.1.0.0 on the LAN. The WAN network interface is a logical interface to an IP network connected to the CyberSWITCH over the ISDN. The reason we are using both a WAN and a WAN (Direct Host) Interface is to allow the two devices, Rick Bear and Ralph Moose, to call into somewhere else if need be.

We will begin by adding the LAN interface. Press 2 at the IP configuration menu to begin the LAN interface configuration. Press 1 to add an IP interface. Press 1 to select LAN as the type of interface that you wish to configure.

The interface name is a symbolic name given to the interface. For the LAN interface, you should use a name that describes the LAN. It could be the name of the site or department. Type SanFran for this example.

You will then be asked for the IP Address for the interface. In our example, the value you should enter is 128.1.1.1. You will then be asked for the IP Subnet mask information. In our example, we are using a Class B address (without any subnetwork addressing) that requires 16 bits of the address to define the network number. Therefore, press <return> to accept the default of “16” significant bits. Press <return> to accept the default packet encapsulation type (Ethernet). Press <return> to accept the default of 1500 as the MTU size.

Press <return> to accept the default transmit broadcast address. For almost all devices, this address will let the broadcast be transmitted to all devices on the local network. For some older devices, you may need to try some of the other selections to get the transmission to work correctly.

The rest of the LAN information requested pertains to the system RIP feature. (This information will not be asked for if you have disabled RIP.) RIP is a protocol used to exchange routing information among IP devices. Using RIP can automate the maintenance of routing tables on IP devices and relieve you of having to keep the routing tables up to date manually. Static routes need to be configured manually if we need to access a WAN network that is not directly connected to the system, or if we need to access a LAN network through a router that does not support RIP.

RIP determines the shortest path between two points in a network in terms of the number of “hops” between these points.

For the rest of the required RIP LAN interface information, accept the default values.

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EXAMPLE NETWORKS

The interactive LAN interface session should be similar to the following:

1)LAN

2)WAN

3)WAN (Direct Host)

4)WAN (RLAN)

5)WAN (UnNumbered)

Select function from above or <RET> for previous menu: 1

INTERFACE NAME or <RET> to cancel? SanFran

Enter the IP Address in dotted decimal notation or <RET> to cancel? 128.1.1.1

Enter the number of significant bits for the Subnet Mask [default = 16]? <RET>

Enter the packet encapsulation type 1) for ETHERNET 2) for SNAP [default = ETHERNET]? <RET>

Enter the MTU size in bytes [default = 1500]? <RET>

Transmit Broadcast Address:

1)128.1.255.255

2)128.1.0.0

3)255.255.255.255

4)0.0.0.0

5)Specify Explicitly

Enter a Transmit Broadcast Address from the above menu [default = 1]? <RET>

RIP Send Control:

1)Do Not Send.

2)RIP Version 1.

3)RIP Version 1 Compatibility.

4)RIP Version 2.

Enter a RIP Send Control from the above menu [default = 2]? <RET>

(

RIP Receive Control:

1)Do Not Receive.

2)RIP Version 1 Only.

3)RIP Version 2 Only.

4)RIP Version 1 or Version 2.

Enter a RIP Receive Control from the above menu [default = 4]? <RET>

RIP Respond Control:

1)Do Not Respond.

2)RIP Version 1 Only.

3)RIP Version 2 Only.

4)RIP Version 1 or Version 2.

Enter a RIP Respond Control from the above menu [default = 4]? <RET>

RIP Version 2 Authentication Control:

1)No Authentication.

2)Simple Password.

Enter a RIP Authentication Control from the above menu [default = 1]? <RET>

38 CyberSWITCH

IP ROUTINGNETWORK

Configure the CyberSWITCH

After you have entered all of the information for the interface, a summary screen is displayed. You are asked if you want to save this information. If all of the configured information is accurate, press <return> to save the information. If any configuration elements need to be changed, press N, and reconfigure the interface.

Current Configuration for INTERFACE "sanfran":

Interface Type

LAN

IP Address

128.1.1.1

Mask

255.255.0.0

MTU (bytes)

1500

Encapsulation

Ethernet

LAN Port

1

Transmit Broadcast

128.1.255.255

RIP Configuration:

 

Send Control

RIP Version 1

Receive Control

RIP1 or RIP2

Respond Control

RIP1 or RIP2

v2 Authentication

No Authentication

Are you sure you want to add the INTERFACE "sanfran" (Y or N) [Y]? <RET>

Next, we will configure the system’s WAN interface. This interface is used for the two devices Rick Bear and Ralph Moose. The interface name is a symbolic name given to the interface. For the WAN interface, you should use a name that describes the WAN. For this example, both WAN sites are located in San Jose, so we will enter SanJose for the WAN interface Name.

You will then be asked for the IP Address for the WAN interface. In our example, the value you should enter is 192.1.1.1 (refer to Network Topology Worksheet). You will then be asked for the IP Subnet mask information. Press <return> to accept the default of “24” significant bits. Press <return> to accept the default of 1500 as the MTU size. Press <return> to accept the default transmit broadcast address.

The last configuration element pertains to the system’s RIP feature. This information will not be requested if you have disabled the RIP feature. Here, you have a choice of enabling or disabling host routes propagation. The RIP host routes propagation scheme determines how the WAN local route will be propagated via RIP. The default value is “Host Routes Propagation is currently DISABLED.” With the default, WAN local routes are propagated as subnetwork routes. If Host routes propagation is enabled, host routes will be propagated on other network interfaces only while each remote IP device is connected to the system.

When the RIP host propagation scheme is enabled, multiple systems on the same LAN will work properly. RIP information is then advertised as multiple host routes as they connect to the system. In our example network, there is only one system on the LAN. Therefore, we want to leave host routes propagation disabled.

The following screen illustrates the host routes propagation portion of the entry of the WAN interface information:

Host Routes Propagation is currently DISABLED.

By enabling Host Route Propagation for this interface, host routes will be propagated on other network interfaces while each remote IP device is connected to the system.

Do you wish to ENABLE Host Route Propagation (Y or N) [default = N]? <RET>

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