Configuring Ports

This section provides details for the configuration of ports on the S- K- and 7100-Series products.

Default Port Parameters lists port parameters and their default values.

Default Port Parameters

Parameter	Description	Default Value
broadcast suppression	Specifies a limit for the number of broadcast packets per second that can be received and switched on a port.	disabled (set to max value of 1488100)
console baud rate	Specifies the baud rate for the console port.	9600
console bits	Specifies the number of bits per character on the console port.	8 bits
console flow control	Specifies the flow control mechanism for the console port.	ctsrts (Clear to Send/Request to Send)
global link flap state	Specifies whether link flap is enabled globally on this device	disabled
jumbo frame support	Specifies whether Ethernet frame with a payload greater than 1500 is supported on this port.	disabled
port ingress filter	Specifies that frame forwarding is limited to members of the port‘s VLAN egress list.	disabled
port negotiation	Specifies whether auto-negotiation is enabled on this port.	enabled
port priority	Specifies the 802.1D priority for this port.	0
port state	Specifies the port state.	disabled
port traps	Specifies whether the sending of port traps is enabled on this port.	enabled
transmit queue monitoring state	Specifies the global state of transmit queue monitoring on the device. (7100-Series)	enabled
transmit queue monitoring trap status	Specifies the global state of transmit queue monitoring trap generation on the device. (7100-Series)	enabled
transmit queue monitoring down time	Specifies the number of sample intervals the port will be down if the disable port threshold action is triggered for the port. (7100-Series)	1 sample interval

Configuring Ports describes how to configure ports.

Configuring Ports

Step	Task	Command(s)
1	Administratively enable one or more ports on the system.	set port enable port-string
2	Optionally, change the properties for one or more console ports.	set console {[baud rate] | [bits num-bits] | [cts-link {enable | disable}] | [flowcontrol {none | ctsrts | dsrdtr}] | [parity {none | odd | even | mark | space}] | [stopbits {one | oneandhalf | two}] [vt100 dsr {enable | disable | timeout timeout]} [port-string]
3	Optionally, limit the forwarding of received frames based on port VLAN egress lists.	set port ingress-filter port-string enable
4	Optionally, assign an alias name to a port.	set port alias port-string [string]
5	Optionally, on a 7100-Series device, change the port buffer mode.	set port buffer mode {flow-control | priority-groups}
6	Optionally, enable the forcing of ports in the “operstatus down” state to become disabled.	set forcelinkdown enable
7	Optionally, set the default speed of one or more ports.	set port speed port-string {10 | 100 | 1000 | 10000 | 40000}
8	Optionally, set the default duplex type for one or more ports.	set port duplex port-string {full | half}
9	Optionally, enable jumbo frame support on one or more ports.	set port jumbo enable [port-string]
10	Optionally, enable auto-negotiation on one or more ports.	set port negotiation port-string enable
11	Optionally, set MDI/MDIX mode on one or more ports.	set port mdix [port-string] {auto | mdi | mdix}
12	Optionally, configure the auto-negotiation advertised capabilities on one or more ports.	set port advertise port-string {[10t] [10tfd] [100tx] [100txfd] [1000x] [1000xfd] [1000t] [1000tfd] [pause] [apause] [spause] [bpause])
13	Optionally, enable flow control settings for one or more ports.	set port flowcontrol port-string {receive | send | both} enable
14	Optionally, set the broadcast suppression limit on one or more ports.	set port broadcast port-string threshold-val
15	Optionally, set a default port priority for one or more ports.	set port priority port-string priority
16	Optionally, map 802.1D (802.1p) priorities to transmit queues for one or more ports. (S-, K-Series)	set port priority-queue port-string priority queue

Configuring Transmit Queue Monitoring (7100-Series) describes how to configure transmit queue monitoring on the 7100-Series platform.

Configuring Transmit Queue Monitoring (7100-Series)

Step	Task	Command(s)
1	Enable transmit queue monitoring globally on the device if it is disabled.	set txqmonitor state {enable | disable}
17	Optionally, modify the transmit queue monitoring sample interval.	set txqmonitor sampleinterval seconds
18	Optionally, modify the number of sample intervals the port will be down if the disable port threshold action is triggered.	set txqmonitor downtime sample-intervals
19	Optionally, modify the number of sample-intervals the port will ignore pause frames if the ignore pause frames threshold action is triggered.	set txqmonitor ignorepausetime sample-intervals
20	Optionally, modify the minimum number of packets transmitted by the transmit buffer within the sample interval to avoid the buffer being set to stalled state.	set txqmonitor minrate packets
21	Optionally, modify the number of sample intervals before a transmit queue monitoring action is triggered.	set txqmonitor threshold {disableport | ignorepause | logging} sample-intervals
22	Optionally, enable transmit queue monitoring global traps generation.	set txqmonitor trapstatus {enable | disable}

Configuring Link Trap and Link Flap Detection describes how to configure link trap and link flap detection.

Configuring Link Trap and Link Flap Detection

Step	Task	Command(s)
1	Optionally, enable one or more ports for sending SNMP trap messages when link status changes occur.	set port trap port-string enable
2	Optionally, globally enable the link flap detection function for this device. Defaults to disabled.	set linkflap globalstate enable
3	Optionally, enable the link flap detection function on one or more ports. Defaults to disabled.	set linkflap portstate enable [port-string]
4	Optionally, change the period of time within which the link flap threshold must be exceeded to cause the link flap action to trigger.	set linkflap interval port-string interval_value
5	Optionally, set the action that will occur when a link flap violation threshold is met.	set linkflap action port-string {disableInterface | gensyslogentry | gentrap | all}
6	Optionally, change the link flap action trigger threshold.	set linkflap threshold port-string threshold_value
7	Optionally, set the length of time one or more ports will be held down after a link flap violation threshold is met and the action is set to disable the interface.	set linkflap downtime port-string downtime_value

Managing Port Configuration describes how to manage port configuration.

Managing Port Configuration

Task	Command
To clear the properties set for one or more console ports to its default values:	clear console [baud] [bits] [cts-link] [flowcontrol] [parity] [stopbits] [vt100] [port-string]
To override the causes configured to place operating status to a down or dormant state for one or more ports:	clear port operstatuscause [port-string] [admin] [all] [cos] [flowlimit] [linkflap] [policy]
To reset the force link down function to the default state of disabled:	clear forcelinkdown
To reset jumbo frame support status to enabled on one or more ports:	clear port jumbo [port-string]
To reset MDIX mode to the default setting of auto on one or more ports:	clear port mdix [port-string]
To reset auto-negotiation advertised capabilities to the default setting on one or more ports:	clear port advertise port-string [10t | 10tfd | 100tx | 100txfd | 1000x | 1000txfd | 1000t | 1000tfd | pause | apause | spause | bpause]
To clear the configured actions to a link flap violation:	clear linkflap action {port-string} {disableInterface | gensyslogentry | gentrap | all}
To toggle link flap disabled ports to operational:	clear linkflap down [port-string]
To clear all link flap options or statistics on one or more ports:	clear linkflap {all | stats [port-string] | parameter port-string {threshold | interval | downtime | all}
To reset the broadcast threshold or clear the peak rate and peak time values on one or more ports:	clear port broadcast port-string {[threshold] [peak]}
To reset the current default port priority setting to the default value of 0 on one or more ports:	clear port priority port-string
To reset port priority queue settings back to defaults for one or more ports. (S-, K-Series)	clear port priority-queue port-string

Displaying Port Configuration Information and Statistics describes how to display port configuration information and statistics.

Displaying Port Configuration Information and Statistics

Task	Command
To display properties set for one or more console ports:	show console [baud] [bits] [flowcontrol] [parity] [stopbits] [port-string]
To display whether or not one or more ports are enabled for switching:	show port [port-string]
To display operating and admin status, speed, duplex mode and port type for one or more ports on the device:	show port status [port-string] [-interesting]
To display port counter statistics detailing traffic through the device and through all MIB2 network devices:	show port counters [port-string] [switch | mib2 | brief | packets | detail | errors] [nonzero]
To display the causes configured to place operating status to a down or dormant state for one or more ports:	show port operstatuscause [admin | any | cos | dot1x | flowlimit | init | lag | linkflap | linkloss | modifiable | policy | self] [port-string]
To display all ingress-filter enabled ports or the ingress-filter state of the specified ports:	show port ingress-filter port-string
To display alias name(s) assigned to one or more ports:	show port alias [port-string]
To display the status of the force link down function:	show forcelinkdown
To display port transceiver information:	show port transceiver [port-string] [basic-only] [sensor-only] [all]
To display the default speed setting on one or more ports:	show port speed [port-string]
To display the default duplex setting for one or more ports:	show port duplex [port-string]
To display the status of jumbo frame support and MTUs on one or more ports:	show port jumbo [port-string]
To display the status of auto-negotiation for one or more ports:	show port negotiation [port-string]
To display MDIX mode on one or more ports:	show port mdix [port-string] {all | auto | mdi | mdix}
To display the advertised abilities on one or more ports:	show port advertise [port-string]
To display the flow control state for one or more ports:	show port flowcontrol [port-string]
To display the default 802.1D priority for one or more ports:	show port priority [port-string]
To display port broadcast suppression information on one or more ports:	show port broadcast [port-string]
To display transmit queue monitoring configuration settings (7100-Series):	show txqmonitor settings
To display transmit queue monitoring port values (7100-Series):	show txqmonitor port
To display port operstatus cause status (7100-Series):	show port operstatuscause txqmn [port-name]