Routing

IP Routing for Management

Once the metric is created, we can specify its metric tag number within the definition of a route. In this example, an IISP route is being created:

SmartSwitch # add atmroute

 

 

PortNumber()

: 6b2

 

AtmAddress()

: 39:00:00:00:00:00:00:00:00:00:55:77:88

PrefixLength(104)

:

 

Index(0)

:

 

Type(Internal)

:exterior

Scope(0)

:

 

MetricsTag(0)

: 9

— The index tag of our metric pair

Advertising(NO)

:

 

SmartSwitch #

 

 

4.5IP ROUTING FOR MANAGEMENT

ATM SmartSwitches provide limited IP routing. IP routing allows switches that are not connected directly to Ethernet to communicate with an Ethernet-based network management system (NMS). The connection is made by adding IP routes on the non-connected switches that specify a client on a connected switch as their gateway to the Ethernet.

Note ATM SmartSwitch IP routing performance is inadequate for routing between VLANs. If you need to create routes between VLANs on your ATM SmartSwitch, use a router equipped with an ATM interface. Consult Cabletron Customer Support for recommended routers.

For example,

Switch SW1 and the NMS are on an Ethernet network with address 128.205.99.0.

The IP address of SW1's Ethernet port is 128.205.99.254.

The IP address of SW1's LANE client is 90.1.1.254.

The IP address of SW2's LANE client is 90.1.1.33.

SW2 is not physically connected to the Ethernet network.

SW2 is connected to SW1 through PNNI, and both switches are part of the same emulated LAN.

To reach SW2 with the Ethernet-based NMS, create an IP route that assigns SW1's switch client as SW2's default gateway to the network 128.205.99.0. Enter the following on SW2 (see Figure 4-3):

SmartSwitch # add route

 

DestNetIP() : 128.205.99.0

— address of the Ethernet network to reach

GatewayIP()

: 90.1.1.254

— IP address of SW1's LANE client

SmartSwitch

#

 

Switch SW2 can now communicate with the NMS on the Ethernet network.

SmartSwitch ATM User Guide 4-9

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Cabletron Systems 04-0053-01 manual IP Routing for Management, 6b2, Index tag of our metric pair, 90.1.1.254