Configuring and Viewing Device Port Information

The pages in the Port folder allow you to view and monitor the physical port information for the ports available on the switch. The Port folder has links to the following pages:

Configuration

Use the Port Configuration page to configure the physical interfaces on the switch. To access the Port Configuration page, click System > Port >Configuration in the navigation menu.

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Port Configuration Fields

Field	Description
Interface	Select the port from the menu to display or configure data for that port. The field is Slot/Port for non‐stacking platforms. If you select All, the changes you make to the Port Configuration page apply to all physical ports on the system.
Port Type	For most ports this field is blank. Otherwise the possible values are: Mirrored: Indicates that the port has been configured as a monitoring port and is the source port in a port mirroring session. Probe: Indicates that the port has been configured as a monitoring port and is the destination port in a port mirroring session. Trunk Member: Indicates that the port has been configured as a member of a port channel, which is also known as a link Aggregation Group (LAG).
STP Mode	Shows the Spanning Tree Protocol (STP) Administrative Mode for the port or LAG. The possible values for this field are: Enable: Enables the Spanning Tree Protocol for this port. Disable: Disables the Spanning Tree Protocol for this port.
Admin Mode	Use the pulldown menu to select the port control administration state, which can be one of the following: Enable: The port can participate in the network (default). Disable: The port is administratively down and does not participate in the network.
Broadcast Storm Recovery Mode	Enable or disable this option by selecting one of the following options on the pull down entry field: Enable: When the broadcast traffic on the specified Ethernet port exceeds the configured threshold, the switch blocks (discards) the broadcast traffic. Disable: The port does not block broadcast traffic if traffic on the port exceeds the configured threshold. The factory default is disabled.
Broadcast Storm Recovery Level	Specify the data rate at which storm control activates. The factory default is 5 percent of port speed. In the Unit field, specify whether the level is measured as a percentage of the overall traffic on the port or the packets per second.
Multicast Storm Recovery Mode	Enable or disable this option by selecting one of the following options on the pull down entry field: Enable: When the multicast traffic on the specified Ethernet port exceeds the configured threshold, the switch blocks (discards) the multicast traffic. Disable: The port does not block multicast traffic if traffic on the port exceeds the configured threshold. The factory default is disabled.
Multicast Storm Recovery Level	Specify the data rate at which storm control activates. The factory default is 5 percent of port speed. In the Unit field, specify whether the level is measured as a percentage of the overall traffic on the port or the packets per second.
Unicast Storm Recovery Mode	Enable or disable this option by selecting one of the following options on the pull down entry field: Enable: When the unicast traffic on the specified Ethernet port exceeds the configured threshold, the switch blocks (discards) the unicast traffic. Disable: The port does not block unicast traffic if the unicast traffic on the port exceeds the configured threshold. The factory default is disabled.
Unicast Storm Recovery Level	Specify the data rate at which storm control activates. The factory default is 5 percent of port speed. In the Unit field, specify whether the level is measured as a percentage of the overall traffic on the port or the packets per second.
LACP Mode	Selects the Link Aggregation Control Protocol administration state: Enable: Specifies that the port is allowed to participate in a port channel (LAG), which is the default mode. Disable: Specifies that the port cannot participate in a port channel (LAG).
Physical Mode	Use the pulldown menu to select the port's speed and duplex mode. If the Unit/Slot/Port or Slot/Port field is set to All and you apply a physical mode other than Auto, the mode is applied to all applicable interfaces only: Auto: The duplex mode and speed will be set by the auto‐negotiation process. The port's maximum capability (full duplex and 100 Mbps) will be advertised. <Speed> Half Duplex: The port speeds available from the menu depend on the platform on which the TejNOS-EN software is running and which port you select. In half‐duplex mode, the transmissions are one‐way. In other words, the port does not send and receive traffic at the same time. <Speed> Full Duplex: The port speeds available from the menu depend on the platform on which the TejNOS-EN software is running and which port you select. In half‐duplex mode, the transmissions are two‐way. In other words, the port can send and receive traffic at the same time.
Physical Status	Indicates the port speed and duplex mode.
Link Status	Indicates whether the Link is up or down.
Link Trap	This object determines whether or not to send a trap when link status changes. The factory default is enabled: Enable: Specifies that the system sends a trap when the link status changes. Disable: Specifies that the system does not send a trap when the link status changes.
Maximum Frame Size	Indicates the maximum Ethernet frame size the interface supports or is configured to support. The frame size includes the Ethernet header, CRC, and payload. (1518 to 12288). The default maximum frame size is 1518.
ifIndex	The ifIndex of the interface table entry associated with this port. If the Unit/Slot/Port field is set to All, this field is blank.

If you make any changes to the page, click Submit to apply the changes to the system.

Port Summary

Use the Port Summary page to view the settings for all physical ports on the platform.

To access the Port Summary page, click System > Port > Summary in the navigation menu.

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Port Summary Fields

Field	Description
MST ID	If Spanning Tree Protocol is enabled on the switch, you can select the Multiple Spanning Tree instance ID from the list of all currently configured MST ID's to determine the values displayed for the Spanning Tree parameters. Changing the selected MST ID will generate a screen refresh.
Interface	Identifies the port that the information in the rest of the row is associated with.
Port Type	For most ports this field is blank. Otherwise, the possible values are: Mirrored: Indicates that the port has been configured as a monitoring port and is the source port in a port mirroring session. Probe: Indicates that the port has been configured as a monitoring port and is the destination port in a port mirroring session. Port Channel: Indicates that the port has been configured as a member of a port‐channel, which is also known as a link Aggregation Group (LAG).
STP Mode	Shows the Spanning Tree Protocol (STP) Administrative Mode for the port or LAG, which can be Enabled or Disabled.
Forwarding State	The port's current state Spanning Tree state. This state controls what action a port takes on receipt of a frame. If the bridge detects a malfunctioning port it will place that port into the broken state. The other five states are defined in IEEE 802.1D: Disabled Blocking Listening Learning Forwarding Broken
Port Role	Each MST Bridge Port that is enabled is assigned a Port Role for each spanning tree. The port role will be one of the following values: Root Port, Designated Port, Alternate Port, Backup Port, Master Port, or Disabled Port.
Admin Mode	Shows the port control administration state, which can be one of the following: Enabled: The port can participate in the network (default). Disabled: The port is administratively down and does not participate in the network.
Bcast Storm Mode	Shows whether the Broadcast Storm Recovery Mode, which can be one of the following: Enabled: When the broadcast traffic on the specified Ethernet port exceeds the configured threshold, the switch blocks (discards) the broadcast traffic. Disabled: The port does not block broadcast traffic if traffic on the port exceeds the configured threshold. The factory default is disabled.
Bcast Storm Level	Shows the Broadcast Storm Recovery Level, which is the data rate at which storm control activates. The value is a percentage of port speed and ranges from 0‐100. The factory default is 5 percent of port speed.
Mcast Storm Mode	Shows the Multicast Storm Recovery Mode, which is one of the following: Enabled: When the multicast traffic on the specified Ethernet port exceeds the configured threshold, the switch blocks (discards) the multicast traffic. Disabled: The port does not block multicast traffic if traffic on the port exceeds the configured threshold. The factory default is disabled.
Mcast Storm Level	Shows the Multicast Storm Recovery Level, which is the data rate at which storm control activates. The value is a percentage of port speed and ranges from 0‐100. The factory default is 5 percent of port speed.
Ucast Storm Mode	Shows the Unicast Storm Recovery Mode, which can be one of the following: Enabled: When the unicast traffic on the specified Ethernet port exceeds the configured threshold, the switch blocks (discards) the unicast traffic. Disabled: The port does not block unicast traffic if the unicast traffic on the port exceeds the configured threshold. The factory default is disabled.
Ucast Storm Level	Shows the Unicast Storm Recovery Level, which is the data rate at which storm control activates. The value is a percentage of port speed and ranges from 0‐100.The factory default is 5 percent of port speed.
LACP Mode	Indicates the Link Aggregation Control Protocol administration state. The mode must be enabled in order for the port to participate in Link Aggregation. This field can have the following values: Enable: Specifies that the port is allowed to participate in a port channel (LAG), which is the default mode. Disable: Specifies that the port cannot participate in a port channel (LAG).
Physical Mode	Shows the speed and duplex mode at which the port is configured: Auto: The duplex mode and speed will be set by the auto‐negotiation process. The port's maximum capability (full duplex and 100 Mbps) will be advertised. <Speed> Half Duplex: The port speeds available from the menu depend on the platform on which the TejNOS-EN software is running and which port you select. In half‐duplex mode, the transmissions are one‐way. In other words, the port does not send and receive traffic at the same time. <Speed> Full Duplex: The port speeds available from the menu depend on the platform on which the TejNOS-EN software is running and which port you select. In half‐duplex mode, the transmissions are two‐way. In other words, the port can send and receive traffic at the same time.
Physical Status	Indicates the port speed and duplex mode at which the port is operating.
Link Status	Indicates whether the Link is up or down.
Link Trap	This object determines whether or not to send a trap when link status changes. The factory default is enabled. Enable: Specifies that the system sends a trap when the link status changes. Disable: Specifies that the system does not send a trap when the link status changes.

Click Refresh to redisplay the most current information from the router.

Port Description

Use the Port Description page to configure a human-readable description of the port.

To access the Port Description page, click System > Port > Port Description in the navigation menu.
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Port Description Fields

Field	Description
Interface	Select the interface for which data is to be displayed or configured.
Port Description	Enter text to describe a port. It can be up to 64 characters in length. The description can contain spaces and non‐alphanumeric characters.
Interface	Identifies the port.
Physical Address	Displays the physical address of the specified interface.
PortList Bit Offset	Displays the bit offset value which corresponds to the port when the MIB object type PortList is used to manage in SNMP.
IfIndex	Displays the interface index associated with the port.
Port Description	Shows the configured port description. By default, the port does not have an associated description.

If you change a port description, click Submit to apply the change to the system.
Click Refresh to redisplay the page with the latest information from the router.

Cable Test

The cable test feature enables you to determine the cable connection status on a selected port. You can also obtain an estimate of the length of the cable connected to the port, if the PHY on the ports supports this functionality.

NOTE: The cable test feature is supported only for copper cable. It is not supported for optical fiber cable.

To access the Cable Test feature, click System > Port > Cable Test.
The page displays with additional fields when you click Test Cable. The fields that display depend on the cable test results.

Cable Test Fields

Field	Description
Interface	If the test has not been performed, this is the only field that displays. Select the interface to test. After the test has been performed, this field shows the interface that was tested
Cable Status	This displays the cable status as Normal, Open, or Short. Normal: The cable is working correctly. Open: The cable is disconnected or there is a faulty connector. Short: There is an electrical short in the cable. Cable Test Failed: The cable status could not be determined. The cable may in fact be working. This field is displayed after you click Test Cable and results are available.
Cable Length	Displays the estimated length of the cable in meters. The length is displayed as a range between the shortest estimated length and the longest estimated length. Unknown is displayed if the cable length could not be determined. This field is displayed only when the cable status is Normal
Failure Location	The estimated distance in meters from the end of the cable to the failure location. The failure location is only displayed if the cable status is Open or Short.

Select a port and click Test Cable to display its status. If the port has an active link while the cable test is run, the link can go down for the duration of the test. The test may take several seconds to run.

The command returns a cable length estimate if this feature is supported by the PHY for the current link speed.

NOTE: If the link is down and a cable is attached to a 10/100 Ethernet adapter, then the cable status may display as Open or Short because some Ethernet adapters leave unused wire pairs unterminated or grounded.

Multiple Port Mirroring

Port mirroring selects the network traffic for analysis by a network analyzer. This is done for specific ports of the switch. As such, many switch ports are configured as source ports and one switch port is configured as a destination port. You have the ability to configure how traffic is mirrored on a source port. Packets that are received on the source port, that are transmitted on a port, or are both received and transmitted, can be mirrored to the destination port. The packet that is copied to the destination port is in the same format as the original packet on the wire. This means that if the mirror is copying a received packet, the copied packet is VLAN tagged or untagged as it was received on the source port. If the mirror is copying a transmitted packet, the copied packet is VLAN tagged or untagged as it is being transmitted on the source port. Use the Multiple Port Mirroring page to define port mirroring sessions. To access the Multiple Port Mirroring page, click System > Port > Multiple Port Mirroring in the navigation menu.

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Multiple Port Mirroring Fields

Field	Description
Session	Specifies the monitoring session.
Mode	Enables you to turn on of off Multiple Port Mirroring. The default is Disabled (off).
Destination Port	Select the port to which port traffic may be copied.
Direction	Specifies the direction of traffic on source port(s) which will be sent to the probe port. Possible values are: Tx and Rx: Both Ingress and Egress traffic. Rx: Ingress traffic only. Tx: Egress traffic only.

Adding a Port Mirroring Session

NOTE: A Port will be removed from a VLAN or LAG when it becomes a destination mirror.

From the Port Mirroring page, click Add to display the Add Source Ports page.
Configure the fields by referring to the table Multiple Port Mirroring-Add Source Ports Fields.
Click Add to apply the changes to the system. The new port mirroring session is enabled for the unit and port, and the device is updated. The source port appears in the Source Port list on the Multiple Port Mirroring page.

Multiple Port Mirroring-Add Source Ports Fields

Field

Description

Session

Specifies the monitoring session.

Source Port

Select the unit and port from which traffic is mirrored. Up to eight source ports can be mirrored to a destination port.

Direction

Select the type traffic monitored on the source port, which can be one of the following:

Tx and Rx: Monitors transmitted and received packets.
Rx: Monitors received packets only.
Tx: Monitors transmitted packets only.

Removing or Modifying a Port Mirroring Session

From the Port Mirroring page, click Remove Source Port.
Select one or more source ports to remove from the session. Use the CTRL key to select multiple ports to remove.
Click Remove. The source ports are removed from the port mirroring session, and the device is updated.