Name: Extreme Networks ExtremeSwitching 5420 Series
Brand: Extreme Networks
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Selecting Stacking Cables

Stacking connections using the native stacking ports require stacking cables that are speciﬁc to the

type of stacking port. These cables are available from Extreme Networks in lengths from 0.5 meter to

100 meters.

Note

For the most recent information about available cables, contact your Extreme Networks sales

representative or refer to the Extreme Optics website.

Caution

Use of non-recommended cables or optics could cause stack instability.

Alternative Conﬁguration for Optics on X590, X690, X695, and X870 Switches

To use certain ﬁber cables and optical transceivers for stacking on X590, X690, X695, and X870

switches, you must use the V400 alternative-configuration option on the configure

stacking-support command. This option sets the stacking ports to 100 Gb, enables pre-emphasis,

and enables error correction using IEEE 802.3bj Clause 91 RS-FEC.

Table 16 lists cables and transceivers that require the use of V400 alternative-configuration:

Table 16: Cables and Transceivers that Require Alternative Conﬁguration

Part Number Cable or Transceiver

10401 100Gb SR4 QSFP28 MMF transceiver

10403 100Gb LR4 QSFP28 transceiver

10404 100Gb CWDM4 QSFP28 SMF transceiver

10405 100Gb PSM4 QSFP28 SMF transceiver

10441 QSFP28 x 4SFP28 (4x25Gb) active optical breakout cable - 5 meters

10442 QSFP28 x 4SFP28 (4x25Gb) active optical breakout cable - 7 meters

10443 QSFP28 x 4SFP28 (4x25Gb) active optical breakout cable - 10 meters

10444 QSFP28 x 4SFP28 (4x25Gb) active optical breakout cable - 20 meters

For details about the configure stacking-support command, see the ExtremeXOS 31.3

Command Reference Guide.

Using the Extreme Stacking Tool

The Extreme Stacking Tool provides an easy way to plan your stack. As you select various switch

models and stacking methods, the tool shows you:

• What switch models can be stacked together and which cannot.

• Whether switching methods – for example, SummitStack-V and SummitStack-V80 (supported in

EXOS 30.1 and prior releases only) – are compatible with the selected switches.

• Statistics showing the routing options that are available with every stack combination.

Selecting Stacking Cables

Building Stacks

64 ExtremeSwitching 5420 Series Hardware Installation Guide

Extreme Networks ExtremeSwitching 5420 Series User Manual

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