3Com NJ220 manual Collisions are not included but are counted in the Excessive

Page 78

Product Specifications

InDiscards

Total valid frames received that are discarded due to lack of

 

buffer space. This includes frames discarded at ingress as well as

 

those dropped due to priority and congestion considerations at

 

the output queues. Frames dropped at egress due to excessive

 

collisions are not included but are counted in the Excessive

 

counter.

 

InFiltered

If 802.1Q is disabled on the port, these are the total valid frames

 

received that are not forwarded to a destination port. These are

 

frames for which the destination port vector is 0 or are not

 

forwarded due to the state of the portState bits. valid frames

 

discarded due to a lack of buffer space are not included.

 

If 802.1Q is enabled on the port, then these are the total valid

 

frames received (tagged or untagged) that were discarded due

 

to an unknown VID (i.e., the frame's VID was not in the VTU)

OutUnicasts

Total valid frames transmitted with a unicast destination

 

address

 

OutBroadcasts

Total valid frames transmitted with destination address equal to

 

FF:FF:FF:FF:FF:FF.

 

OutPause

Total pause frames transmitted.

 

OutMulticasts

Total valid frames transmitted with multicast destination

 

address that are not counted in OutBroadcasts or OutPause.

OutFCSErr

Total frames transmitted with a valid length and an invalid FCS.

OutGoodOctets

Total data octets transmitted. The count includes the FCS but

 

not the preamble.

 

Out64Octets

Total frames transmitted with a length

of exactly 64 octets,

 

including those with errors.

 

Out127Octets

Total frames transmitted with a length

of between 65 and 127

 

octets inclusive, including those with errors.

Out255Octets

Total frames transmitted with a length

of between 128 and

 

255 octets inclusive, including those with errors.

Out511Octets

Total frames transmitted with a length

of between 256 and

 

511 octets inclusive, including those with errors.

Out1023Octets

Total frames transmitted with a length

of between 512 and

 

1023 octets inclusive, including those with errors.

OutMaxOctets

Total frames transmitted with a length of between 1024 and

 

1522 octets inclusive, including those with errors.

Collisions

Total number of collisions during frame transmission.

Late

Total number of times collision is detected later than 512 bit-

 

times into the transmission of a frame.

 

Excessive

Total number of frames not transmitted because the frame

 

experienced 16 transmission attempts and was discarded. The

 

discard will only occur if DiscardExcessive is set to a 1 (in global

 

control register).

 

Multiple

Total number of successfully transmitted frames that

 

experienced more than on collision.

 

74

Image 78
Contents 3Com IntelliJack Switch NJ220 Marlborough, MA 3Com CorporationCampus Drive 01752-3064Contents Troubleshooting the NJ220 Installing the NJ220 Intellijack Using a particular port Following diagram shows the back view of the IntelliJack Before You Begin Component Purpose 3C NumbersInstalling Using an Integrated Switch with Power Over Ethernet Using a Multi-port Ethernet Power SupplySupply Using a Single-port Ethernet Power Supply Using the 3Com Local Power SupplyInstalling the NJ220 Intellijack Commercial Building Telecommunications Cabling Standard Installing the NJ220 Intellijack Installing the IntelliJack Installing the NJ220 Intellijack Checking the LEDs Connecting Devices toIntelliJack DescriptionInstalling the NJ220 Intellijack Installing Configuration Managers Installing the Configuration Managers Installing the Local and Central Configuration Managers Installing the Configuration Managers Installing the Local and Central Configuration Managers Installing the Configuration Managers Installing the Web Http//java.sun.com Http//YourServerIPAddress8080/3ComIJNJ/main/index.jsp Installing the Configuration Managers Using Local Configuration Manager Using the Local Configuration Manager Setting Advanced Using the Local Configuration Manager Using Central Configuration Manager Using the Central Configuration Manager Discovering NJ220 Devices on Your Network Using the Central Configuration Manager Viewing Device General Tab Port InformationProduct Information Hardware Settings Viewing Device Properties Using the Central Configuration Manager Statistics Log Snmp Settings Advanced Settings Alert Level Notifying Event Changing Device General Configuration Identification SettingsChanging Device Configuration Priority & Vlan Configuration Port Based SettingsOther Priority & Vlan Settings Using the Central Configuration Manager Security Configuration Password802.1X Using the Central Configuration Manager Changing Device Configuration Snmp Configuration Advanced Configuration Event Alert LevelsPort Based Controls Restoring Default Values Global Setting Default ValuePriority Option Multiplier Rate limiting option Port Setting Default Value Changing Device Configuration Using the Central Configuration Manager Finding Computers Upgrading the NJ220 Upgrading the NJ220 Firmware Using the Central Configuration Manager Upgrading the NJ220 Firmware Using the Central Configuration Manager Troubleshooting the NJ220 Troubleshooting the NJ220 Your 3COM Products Access Software Country Telephone Number Asia, Pacific Rim Telephone Technical Support and RepairContract requests emeacontract@3com.com US and Canada Telephone Technical Support and RepairHardware Network InterfacePerformance Environment FeaturesMIB Support Standards ConformanceRmon Counters FfffffffffffCollisions are not included but are counted in the Excessive Page Product Specifications Regulatory Information Japan Vcci Compliance