Monitoring Traffic

CHAPTERS

1. Traffic Monitor

2. Appendix: Default Parameters

This guide applies to:

T1500G-8T v2 or above, T1500G-10PS v2 or above, T1500G-10MPS v2 or above, T1500-28PCT v3 or above, T1600G-18TS v2 or above, T1600G-28TS v3 or above, T1600G-28PS v3 or above, T1600G-52TS v3 or above, T1600G-52PS v3 or above, T1700X-16TS v3 or above, T1700G-28TQ v3 or above, T2500G-10TS v2 or above, T2600G-18TS v2 or above, T2600G-28TS v3 or above, T2600G-28MPS v3 or above, T2600G-28SQ v1 or above, T2600G-52TS v3 or above.

1Traffic Monitor

With Traffic Monitor function, you can monitor each port’s traffic information, including the traffic summary and traffic statistics in detail.

1.1Using the GUI

Choose the menu MAINTENANCE > Traffic Monitor to load the following page.

Figure 1-1 Traffic Summary

Follow these steps to view the traffic summary of each port:

1)To get the real-time traffic summary, enable Auto Refresh, or click Refresh.

Auto Refresh:

With this option enabled, the switch will automatically refresh the traffic summary.

Refresh Interval:

Specify the time interval for the switch to refresh the traffic summary.

2)In the Traffic Summary section, click UNIT1 to show the information of the physical ports, and click LAGS to show the information of the LAGs.

Packets Rx:

Displays the number of packets received on the port. Error packets are not counted.

Packets Tx:

Displays the number of packets transmitted on the port. Error packets are not counted.

Octets Rx:

Displays the number of octets received on the port. Error octets are counted.

Octets Tx:

Displays the number of octets transmitted on the port. Error octets are counted .

To view a port’s traffic statistics in detail, click Statistics on the right side of the entry.

Figure 1-2 Traffic Statistics

Received:

Displays the detailed information of received packets.

Broadcast: Displays the number of valid broadcast packets received on the port. Error frames are not counted.

Multicast: Displays the number of valid multicast packets received on the port. Error frames are not counted.

Unicast: Displays the number of valid unicast packets received on the port. Error frames are not counted.

Jumbo: Displays the number of valid jumbo packets received on the port. Error frames are not counted.

Alignment Errors: Displays the number of the received packets that have a Frame Check Sequence (FCS) with a non-integral octet (Alignment Error). The size of the packet is between 64 bytes and 1518 bytes.

Undersize Packets: Displays the number of the received packets (excluding error packets) that are less than 64 bytes long.

64-Octets Packets: Displays the number of the received packets (including error packets) that are 64 bytes long.

65-to-127-Octects Packets: Displays the number of the received packets (including error packets) that are between 65 and 127 bytes long.

128-to-255-Octects Packets: Displays the number of the received packets (including error packets) that are between 128 and 255 bytes long.

256-to-511-Octects Packets: Displays the number of the received packets (including error packets) that are between 256 and 511 bytes long.

512-to-1023-Octects Packets: Displays the number of the received packets (including error packets) that are between 512 and 1023 bytes long.

1023-to-1518-Octects Packets: Displays the number of the received packets (including error packets) that are between 512 and 1023 bytes long.

Pkts: Displays the number of packets received on the port. Error packets are not counted.

Bytes: Displays the number of bytes received on the port. Error packets are not counted.

Sent:

Displays the detailed information of sent packets.

Broadcast: Displays the number of valid broadcast packets transmitted on the port. Error frames are not counted.

Multicast: Displays the number of valid multicast packets transmitted on the port. Error frames are not counted.

Unicast: Displays the number of valid unicast packets transmitted on the port. Error frames are not counted.

Pkts: Displays the number of packets transmitted on the port. Error packets are not counted.

Bytes: Displays the number of bytes transmitted on the port. Error packets are not counted.

Collisions: Displays the number of collisions experienced by a half-duplex port during packet transmissions.

1.2Using the CLI

On privileged EXEC mode or any other configuration mode, you can use the following command to view the traffic information of each port or LAG:

show interface counters [ fastEthernet port | gigabitEthernet port | ten-gigabitEthernet port | port-channel port-channel-id ]

port: The port number.

port-channel-id : The group number of the LAG.

If you enter no port number or group number, the information of all ports and LAGs will be displayed.

The displaying information includes:

Tx Collisions: Displays the number of collisions experienced by a port during packet transmissions.

Tx Ucast / Tx Mcast / Tx Bcast / Tx Jumbo: Displays the number of valid unicast / multicast / broadcast / jumbo packets transmitted on the port. Error frames are not counted.

Tx Pkts: Displays the number of packets transmitted on the port. Error packets are not counted.

Tx Bytes: Displays the number of bytes transmitted on the port. Error packets are not counted.

Rx Ucast / Rx Mcast / Rx Bcast / Rx Jumbo: Displays the number of valid unicast / multicast / broadcast / jumbo packets received on the port. Error frames are not counted.

Rx Alignment: Displays the number of the received packets that have a Frame Check Sequence (FCS) with a non-integral octet (Alignment Error). The size of the packet is between 64 bytes and 1518 bytes.

Rx UnderSize: Displays the number of the received packets (excluding error packets) that are less than 64 bytes long.

Rx 64Pkts: Displays the number of the received packets (including error packets) that are 64 bytes long.

Rx 65-127Pkts: Displays the number of the received packets (including error packets) that are between 65 and 127 bytes long.

Rx 128-255Pkts: Displays the number of the received packets (including error packets) that are between 128 and 255 bytes long.

Rx 256-511Pkts: Displays the number of the received packets (including error packets) that are between 256 and 511 bytes long.

Rx 512-1023Pkts: Displays the number of the received packets (including error packets) that are between 512 and 1023 bytes long.

Rx 1024-1518Pkts: Displays the number of the received packets (including error packets) that are between 1024 and 1518 bytes long.

Rx Pkts: Displays the number of packets received on the port. Error packets are not counted.

Rx Bytes: Displays the number of bytes received on the port. Error packets are not counted.

2Appendix: Default Parameters

Table 2-1Traffic Statistics Monitoring

Parameter

Default Setting

Traffic Summary

Auto Refresh

Disable

Refresh Rate

10 seconds