ES5D21VST000 (Dedicated Stack Card with 2*QSFP+ Interface)

Version Mapping

Table 1 lists the mapping between the ES5D21VST000 card and software versions.

**Table 1** Version mapping
Card Model	Software Version
ES5D21VST000	S5720-C-EI and S5720-PC-EI: V200R007C00 and later versions NOTE: This module is not supported in V200R007C10. S5730-SI and S5730S-EI: V200R012C00 and later versions

Card Overview

The ES5D21VST000 is a stack card that provides two QSFP+ optical ports for stack connection. It can be installed in a rear card slot of the switch models listed in Table 2.

**Table 2** Applicable switch models
Card	Switch Model
ES5D21VST000	S5720-C-EI, S5720-PC-EI, S5730-SI, and S5730S-EI series

Figure 1 ES5D21VST000

Functions

Table 3 describes functions of the ES5D21VST000.

**Table 3** Functions
Function	Description
Basic function	Provides two QSFP+ optical ports for setting up a stack system among multiple switches. The QSFP+ optical port cannot be split into four 10GE ports.
Hot swapping	Supported

Indicators and Ports

Figure 2 Indicators on the ES5D21VST000

**Table 4** Description of indicators on the ES5D21VST000
Number	Indicator	Color	Description
1	MST	Off	Off: The switch is the standby or slave switch in a stack or a standalone switch with the stacking function disabled.
1	MST	Green	Blinking: The switch is the master switch in a stack or a standalone switch with the stacking function enabled.
2	STAT	Off	The system software is not running.
		Green	Fast blinking: The system is starting. Slow blinking: The system is running properly.
		Red	Steady on: A fault that affects services has occurred. The fault cannot be rectified automatically and requires manual intervention.
3	LINK	Off	No link is established on the port.
	LINK	Green	Steady on: A link is established on the port.
	ACT	Off	The port is not transmitting or receiving data.
	ACT	Yellow	Blinking: The port is transmitting or receiving data.

Figure 3 Ports on the ES5D21VST000

1. Two QSFP+ optical ports

QSFP+ optical ports

QSFP+ optical ports on the ES5D21VST000 are used for setting up a stack system among multiple switches. Table 5 lists the attributes of a QSFP+ optical port.

When the card is installed on the S5720-EI, the two optical ports on the card can work with QSFP+ optical modules (only QSFP-40G-SR4 and QSFP-40G-iSR4 supported) and QSFP+ cables (1 m, 3 m, and 5 m; QSFP+ to QSFP+). When the card is installed on the S5730-SI or S5730S-EI, the optical ports on the card can work with QSFP+ optical modules (excluding the QSFP-40G-SR-BD), QSFP+ AOC cables (10 m; QSFP+ to QSFP+), and QSFP+ cables (1 m, 3 m, and 5 m; QSFP+ to QSFP+).

**Table 5** Attributes of a QSFP+ optical port
Attribute	Description
Connector type	MPO
Optical port attributes	Depend on the optical module used (see 40GE QSFP+ Optical Modules)
Standards compliance	IEEE 802.3ba

Technical Specifications

**Table 6** Technical specifications
Item	Description
Physical specifications	Dimensions (H x W x D): 40 mm x 100 mm x 208 mm (1.6 in. x 3.9 in. x 8.2 in.) Weight: 0.92 kg (2.03 lb) Maximum power consumption: 9 W
Environment specifications	Operating temperature: 0°C to 45°C (32°F to 113°F) Relative humidity: 5% RH to 95% RH Storage temperature: -40°C to +70°C (-40°F to +158°F)

Ordering Information

Ordering information is subject to updates with product version upgrades. The ordering information provided in this manual is for reference only. To obtain the latest ordering information, contact Huawei switch distributors or Huawei local office.

**Table 7** Ordering information
Card Description	Card Name	Part Number
Dedicated stack card with 2*QSFP+ interface (including one PCS of 1 m QSFP+ cable)	ES5D21VST000	02310YXY