Huawei S2700 - Page 66

Table 7-2 Requirements for Ethernet cables and optical fibers
Network
Cable
Type
Distance
(Excluding the
Length of a
Copper
Module)
Between the
Switch Front
Panel and
Cabinet Front
Door (X)
Distance Between the Switch Rear Panel and
Cabinet Rear Door (Y)
Ultra-short
Pigtail
Short Pigtail Regular Fiber
or QSFP+
Fiber
Category 5
unshielded
twisted pair
80 mm (3.1 in.)
< X < 100 mm
(4.3 in.)
Y ≥ 60 mm
(2.4 in.)
Y ≥ 72 mm
(2.8 in.)
Y ≥ 80 mm
(3.1 in.)
Category 5
shielded
twisted pair
X = 110 mm (4.3
in.)
Y ≥ 60 mm
(2.4 in.)
Route Ethernet
cables from
both sides of
the cabinet.
Y ≥ 72 mm
(2.8 in.)
Route Ethernet
cables from
both sides of
the cabinet.
Cannot be used
together with
Category 5
shielded
twisted pair
Ethernet
cables.
Category 6
twisted pair
X = 120 mm (4.7
in.)
Y ≥ 60 mm
(2.4 in.)
Route Ethernet
cables from
both sides of
the cabinet.
Cannot be used
together with
Category 6
twisted pair
Ethernet
cables.
Cannot be used
together with
Category 6
twisted pair
Ethernet
cables.
Category 6A STP or higher category twisted pairs are recommended for 10GBASE-T ports.
Category 6A STP and Category 7 twisted pair cables can prevent alien crosstalk. These cables
can be used together with other types of cables and must be bundled on supporting objects
because they are heavy.
Strong interference may cause a bit error rate of no more than 10
-7
on MultiGE ports
(10GBASE-T and IEEE802.3bz). To prevent this problem, keep the switch away from
interference sources or take adequate interference shielding measures. Triggering the fast
retrain function will cause a large number of bit errors in a period of around 30 ms.
Tools and Accessories
l ESD wrist strap or ESD gloves
l Cable tie gun
l Cable ties
l Marker
l Network cable labels
S2700&S3700&S5700&S6700 Switch
Hardware Installation and Maintenance Guide
7 Connecting a Switch
Issue 13 (2017-11-20) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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