Stack Cables; Introduction; Structure; Technical Specifications - Huawei S7700 Hardware Description

S7700 Smart Routing Switch
Hardware Description

6.8 Stack Cables

This section describes the structure and technical specifications of the stack cables.

6.8.1 Introduction

An S7700 can use QSFP high-speed cables or QSFP+ optical fibers as stack cables, which
interconnect the interfaces on the VSTSA cards. The S7706 and S7712 switches are connected
through the stack cables to form a logical switch, implementing packet forwarding.

6.8.2 Structure

Figure 6-11
Figure 6-11 QSFP high-speed stack cable structure (1)
Figure 6-12 QSFP high-speed stack cable structure (2)
Figure 6-13
Figure 6-13 QSFP+ optical fiber structure

6.8.3 Technical Specifications

Table 6-16
Table 6-16 Technical specifications of a QSFP high-speed cable
Item
Cable
Connector X1/X2
Fire-resistance
Issue 02 (2012-09-10)
NOTE
The two ends of a stack cable must be covered by the ESD caps.
The Quad Small Form-Factor Pluggable (QSFP) is a 4-channel small hot pluggable optical module.
and Figure 6-12
shows the structure of a QSFP+ optical fiber.
lists the technical specifications of a QSFP high-speed cable.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
show the structures of the QSFP high-speed stack cables.
Description
QSFP high-speed cable-Indoor-(QSFP 38
male)-(QSFP 38 male)-(CC8P0.5 black
(S))-15 m
QSFP-38PIN-male
UL VW-1 (UL758) or CM (UL444) or CL2
(UL13) or FT4
6 Cables
170