Cabletron Systems 04-0053-01 manual SmartSwitch # set caceqbwallocscheme, Ubr

Traffic Management CapabilitiesTraffic Management

Use the command show caceqbwallocscheme to view the current CAC policies used by each port for each class of service.

SmartSwitch # show caceqbwallocscheme
PortNumber(ALL)	:

===========================================================

Port#	Alloc Scheme
		for
CBR	RTVBR	NRTVBR	UBR	ABR

===========================================================

7A1	CON	CON	CON	LIB	CON
7A2	CON	CON	CON	LIB	CON
7A3	CON	CON	CON	LIB	CON
7A4	CON	CON	CON	LIB	CON
7B1	CON	CON	CON	LIB	CON
7B1.3	CON	CON	CON	LIB	CON
7B2	CON	CON	CON	LIB	CON
7B3	CON	CON	CON	LIB	CON
CPU	CON	CON	CON	LIB	CON
CPU.1	CON	CON	CON	LIB	CON
SmartSwitch	#

Note The CAC affects both physical and virtual ports as indicated in the example above (7b1.3 is a virtual port).

If there are a large number of connections of a particular class of service on a particular port, and these connections begin to slow down and show signs of congestion, use the set caceqbwallocscheme command to change the CAC policy to moderate or conservative.

SmartSwitch # set caceqbwallocscheme
PortNumber()	: 7a1
SeriveCategory(CBR)	: ubr
AllocScheme(LIBERAL)	: moderate

SmartSwitch #

Use the set cacserviceclassbw command to change the amount of bandwidth on a per-port basis that the CAC recognizes as available for each class of service. Available bandwidth for a class of service is specified as a percent of total port bandwidth. For example, to increase the bandwidth for CBR calls on port 7a1 to 20 percent of total port bandwidth, enter the following

SmartSwitch # set cacserviceclassbw
PortNumber()	: 7a1
MaxBandWidth_In_Percentage-CBR(1)	: 20	— Increase to 20%
MaxBandWidth_In_Percentage-RT_VBR(1)	:
MaxBandWidth_In_Percentage-NRT_VBR(7)	:
MaxBandWidth_In_Percentage-UBR(89)	: 70	— Decrease by 20%
MaxBandWidth_In_Percentage-ABR(1)	:

SmartSwitch #

Notice in the example above that the total percentage for all service classes on the port must not exceed 100 percent. Furthermore, if the set cacserviceclassbw command is used to alter a physical port, the change also affects any virtual ports on that physical port.

6-4 SmartSwitch ATM User Guide