3Com NJ220 User Manual - Page 59

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 256 Kbps 512 Kbps 512 Kbps 1 Mb 1 Mb 2 Mb 2 Mb 4 Mb 4 Mb 8 Mb 8 Mb No limit Up to 100 Mb 256 Kbps 512 Kbps 1 Mb 2 Mb 4 Mb 8 Mb 16 Mb Up to 100 Mb 512 Kbps 1 Mb 2 Mb 4 Mb 8 Mb 16 Mb 32 Mb Up to 100 Mb 1 Mb 2 Mb 4 Mb 8 Mb 16 Mb 32 Mb 64 Mb Up to 100 Mb 39 You 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 40 At 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 Max Frame Size Counter Mode Priority Scheduling Mode VLAN Tag for LAN Port (egress) VLAN Tag for LAN Port (ingress) Power Forward Local Configuration SNMP SET SNMP Traps Event Alert ATU Table VTU Table All RADIUS settings Default Value 1518 or 1522 if tagged Count good frames 8, 4, 2, 1 weighted Egress frame unmodified Ingress frame unmodified Auto detection Enable Enable Disabled Level 2 Blank Blank Blank