Cabletron Systems Smart 04-0053-01 User Manual

Page 75

SmartSwitch ATM User Guide 5-9

Virtual Ports and Static Connections

Virtual Ports

Note

For PNNI, the number of VPIs used by each virtual port should be one (1). For
virtual UNI, the number of VPIs used by each virtual port should correspond to
the number of VPIs on the user side of the UNI connection (For information on
virtual UNI, refer to the ATM Forum specification for ILMI 4.0.).

The following is a practical, step-by-step example of creating a virtual port on physical port

7A1

that controls a single

VPI.

Use the

set portconfig

command to turn signaling off on physical port

7a1

SmartSwitch # set portconfig

PortNumber() : 7a1

PortAdminStatus(up) :

IlmiAdminStatus(up) :

SigType(autoConfig) : nnipvc

— Turn off signaling by setting SigType to

nnipvc

SigRole(network) :

InterfaceType(private) :

MaxVpiBits(0) :

— Default MaxVpiBits = 0

MaxVciBits(13) :

— Default MaxVciBits = 13

MaxSvcVpci(0) :

MinSvcVci(32) :

MaxVccs(8192) :

MaxSvpVpci(0) :

MaxVpcs(0) :

SmartSwitch #

Use the

set portconfig

command to assign two bits to

MaxVpiBits

SmartSwitch # set portconfig

PortNumber() : 7a1

PortAdminStatus(up) :

IlmiAdminStatus(up) :

SigType(nniPvc) :

SigRole(network) :

InterfaceType(private) :

MaxVpiBits(0) : 1

— Set to 1 — this translates to VPIs = 2

-1 = 1

MaxVciBits(12) :

— Notice that MaxVciBits has reduced itself by 1 bit

MaxSvcVpci(7) :

MinSvcVci(32) :

MaxVccs(8192) :

MaxSvpVpci(7) :

MaxVpcs(7) :

SmartSwitch #

Note

The command

set portconfig

is used here twice for the purposes of clarity only.

Normally, you would turn off signaling and set the

MaxVpiBits

within the same

instance of

set portconfig