7200 datasheet(37/44 Pages) ARISTA

37 / 44 page

Interface Configuration and Behavior

For details about the different transceivers, modules, and cables, visit https://www.arista.com/en/products/

transceivers-cables.

Transceiver Configuration Command Support

The first eight ports (ports 1-8) are subject to minor differences in transceiver configuration.

The

shut and no shut configuration commands may not use the SFP transceiver’s TX Disable control

result in operational or behavioral differences for Arista Networks transceivers.

The configuration commands

transceiver frequency and transceiver channel are not supported

on the first eight ports (ports 1-8).

Front Panel Port LEDs

When using the

locator-led interface CLI command, the first eight port LEDs (ports 1-8) may flash at

a different rate than the last eight port LEDs (ports 9-16).

Caveats

Auto-negotiation parallel detection on ports 1-8.

Parallel detection is used on Arista AWE 7250R-16S Enterprise WAN router ports 1-8, where the port

can auto-negotiation. This happens when the link partner might not support auto-negotiation, or the auto-

negotiation is disabled on the router. In this condition, the port capable of auto-negotiation can determine if it

should use auto-negotiation and can match the speed with the other router.

Parallel detection is enabled by default and cannot be disabled. Links can come up with a mismatch in auto-

negotiation configuration. If auto-negotiation is enabled on Arista AWE-7250R-16S Enterprise WAN router

ports 1-8 but not on the link partner and links can be established, auto-negotiation status is successful.

Arista(config-if-Et1/1)#

show int st

Port

Name

Status

Vlan

Duplex Speed Type

Flags Encapsulation

Et1/1

connected

routed

a-full a-1G

1000BASE-SX

LinkPartner(config)#

show int ET25 st

Port

Name

Status

Vlan

Duplex Speed Type

Flags Encapsulation

Et25

connected

full

1000BASE-SX

Arista(config-if-Et1/1)#

show int ET1/1 negotiation detail Ethernet1/1

Auto-Negotiation Mode

1000BASE-X (IEEE Clause 37)

Auto-Negotiation Status

Success

Speed Downshifting

Not Applicable

7200 Datasheet(PDF) 37 Page - Arista Networks, Inc

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