Name: Juniper EX2200
Brand: Juniper
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Table 45: show diagnostics tdr Output Fields (continued)

Field DescriptionField Name

Indicates the polarity status of the twisted pair:

• Normal—Polarity is normal. Each conductor in the twisted pair has

been connected the same pins at the both ends of the connection.

For example, a conductor connected to pin 1 at the near end of the

connection is connected to pin 1 at the far end.

• Reversed—Polarity has been reversed. For the twisted pair, the

conductors have switched which pins they are connected to at the

near and far ends of the connection. For example, the conductor

connected to pin 1 at the near end is connected to pin 2 at the far

end.

(Not available on EX8200 switches.) (Displayed only when the

interface option is used)

Polarity swap

Difference in nanoseconds between the propagation delay on this

twisted pair and the twisted pair with the shortest propagation delay.

(Not available on EX8200 switches.) (Displayed only when the

interface option is used.)

Skew time

Number of the 10/100BASE-T transmit/receive pair being reported

on.

Channel Pair

Indicates whether or not the twisted pairs are swapped:

• MDI—The pairs are not swapped (straight-through cable).

• MDIX—The pairs are swapped (cross-over cable).

(Displayed only when the interface option is used.)

Pair Swap

Indicates whether the connection speed is being downshifted:

• No Downshift—No downshifting of connection speed.

• Downshift occurs—Connection speed is downshifted to 10 or 100

Mbs. This occurs if the cable is a two-pair cable rather than the

four-pair cable required by Gigabit Ethernet.

(Displayed only when the interface option is used.)

Downshift

Sample Output

show diagnostics tdr interface ge-0/0/19 (Normal Cable)

user@switch> show diagnostics tdr interface ge-0/0/19

Interface TDR detail:

Interface name : ge-0/0/19

Test status : Passed

Link status : UP

MDI pair : 1-2

Cable status : Normal

Distance fault : 0 Meters

Polartiy swap : Normal

Skew time : 0 ns

MDI pair : 3-6

Network Interfaces for EX4300 Switches

Juniper EX2200 Specifications

General

Throughput	77 Mpps
MAC address table	8000 entries
Jumbo frames support	Yes
Number of VLANs	1024
Networking standards	-
Switch type	Managed
SFP module slots quantity	4
Installed SFP modules quantity	0
Basic switching RJ-45 Ethernet ports quantity	48
Stackable	No
Product color	Black
Power consumption (typical)	100 W
Operating altitude	0 - 3048 m
Non-operating altitude	0 - 4877 m
Storage temperature (T-T)	-40 - 70 °C
Operating temperature (T-T)	0 - 45 °C
Storage relative humidity (H-H)	0 - 95 %
Operating relative humidity (H-H)	10 - 85 %