3Com NJ220 manual Restoring Default Values, Priority Option Multiplier Rate limiting option

Changing Device Configuration 55

With Data Rate Control settings, you can reduce the network traffic speed on the IntelliJack to as little as 128 Kbps. This can be useful if the machine is in a public area where you only want to provide a minimum speed connection.

Even though there are only eight rate limiting choices in the pull-down menu, you can actually increase the number of options you have by setting the Priority Levels on the Priority and VLAN Configuration tab. The following chart shows the various options you can choose on a per port basis:

Priority Option	0	2	4	6
Multiplier	1	2	4	8
Rate limiting option
128 Kbps	128 Kbps	256 Kbps	512 Kbps	1 Mb
256 Kbps	256 Kbps	512 Kbps	1 Mb	2 Mb
512 Kbps	512 Kbps	1 Mb	2 Mb	4 Mb
1 Mb	1 Mb	2 Mb	4 Mb	8 Mb
2 Mb	2 Mb	4 Mb	8 Mb	16 Mb
4 Mb	4 Mb	8 Mb	16 Mb	32 Mb
8 Mb	8 Mb	16 Mb	32 Mb	64 Mb
No limit	Up to 100 Mb	Up to 100 Mb	Up to 100 Mb	Up to 100 Mb

39You can change the Maximum Frame Size setting if your network uses non-standard frame sizes.

The standard maximum size of an Ethernet frame is 1518 bytes. If a VLAN tag is added, the maximum size increases to 1522 bytes. As a result, this is the default setting. If your network uses larger frames, you can select the 1535 byte option.

Restoring Default Values

40At the bottom of this window is an option to restore some of the configuration settings to their default values. If you check this box, the following settings will be restored:

Global Setting	Default Value
Max Frame Size	1518 or 1522 if tagged
Counter Mode	Count good frames
Priority Scheduling Mode	8, 4, 2, 1 weighted
VLAN Tag for LAN Port (egress)	Egress frame unmodified
VLAN Tag for LAN Port (ingress)	Ingress frame unmodified
Power Forward	Auto detection
Local Configuration	Enable
SNMP SET	Enable
SNMP Traps	Disabled
Event Alert	Level 2
ATU Table	Blank
VTU Table	Blank
All RADIUS settings	Blank