Cisco 4948 - Catalyst Switch Installation Guide Page 24
- Page / 162
- Table of contents
- BOOKMARKS
Rated. / 5. Based on customer reviews
1-8
Catalyst 4948E and Catalyst 4948E-F Switch Installation Guide
OL-21561-02
Chapter 1 Product Overview
Fan Tray
Fan Tray
Both the Catalyst 4948E and the Catalyst 4948E-F switch chassis have a fan tray that is mounted in the
rear of the chassis between the two power supplies. The Catalyst 4948E chassis fan tray (WS-X4993=)
provides front-to-back air flow in the chassis and has a front panel that is color-coded dark grey. The
Catalyst
4948E-F chassis fan tray (WS-X4993-F=) provides back-to-front air flow and has a front panel
that is color-coded blue.
Note The two fan trays are not interchangeable between the Catalyst 4948E and the Catalyst 4948E-F chassis.
The WS-X4993-F fan tray is keyed to prevent insertion in the Catalyst 4948E chassis.
Individual fan speed within the fan trays is controlled by redundant temperature sensors located at the
air flow inlet (in the front of the chassis for the Catalyst
4948E and in the rear of the chassis for the
Catalyst
4948E-F). There are six programmable temperature thresholds that trigger fan speed change. If
there is an individual fan failure, the fan speed on the remaining fans is adjusted to try to compensate for
the loss of the fan.
Table 1-3 lists the fan speed settings and the associated temperature thresholds.
Catalyst 4948E Fan Tray (WS-X4993=)
The Catalyst 4948E fan tray (WS-X4993) contains four variable-speed, 12 VDC fans. (See Figure 1-3.)
The fan tray is mounted in the rear of the chassis between the two power supplies.
Note The WS-X4993 fan tray is not interchangeable with the WS-X4993-F fan tray.
Ta b l e 1-3 Fan Speeds Versus Chassis Temperature Thresholds
Fan Speed
Setting
PWM
1
Duty
Cycle
1. Pulse-Width Modulation
Chassis Temperature Range Thresholds
Speed 0 41% T2—89.6°F (32°C)
Note At T2, the fan speed increases to Speed 1.
Speed 1 56% • T1—82.4°F (28°C)
• T4—102.2°F (39°C)
Note At T1, the fan speed decreases to Speed 0. At T4, the fan
speed increases to Speed
2.
Speed 2 75% T3—95.0°F (35°C)
T6—116.6°F (47°C)
Note At T3, the fan speed decreases to Speed 1. At T6, the fan
speed increases to Speed
3.
Speed 3
2
2. Speed 3 is a fixed value and cannot be altered.
100% T5—Greater than 109.4°F (43°C)
- Switch Installation Guide 1
- CONTENTS 3
- Contents 4
- Audience 9
- Organization 9
- Related Documentation 10
- Command Syntax Conventions 10
- Attention 12
- Avvertenza 12
- Advarsel 12
- ¡Advertencia! 13
- Varning! 13
- Product Overview 17
- (Catalyst 18
- 4948E Switch Shown) 18
- Features 19
- Features 20
- Fan Tray 24
- Fan Tray 25
- Front Panel LEDs 27
- Front Panel LEDs 28
- Preparing for Installation 29
- Site Requirements 30
- Temperature 31
- Air Flow 32
- Humidity 33
- Altitude 33
- Dust and Particulates 33
- Corrosion 34
- Power Source Interruptions 35
- System Grounding 35
- System Grounding 36
- Power Requirements 39
- Power Requirements 40
- Cabling Requirements 41
- Site Preparation Checklist 41
- Installing the Switch 43
- Warnings 44
- Verifying Package Contents 46
- Required Tools 46
- Rack-Mounting the Chassis 47
- Rack-Mounting the Chassis 48
- Duct Kit 51
- Installing the System Ground 52
- 3 System ground wire 53
- Statement 1019 54
- • Ground 57
- • (–) negative 57
- • (+) positive 57
- Powering Up the Switch 63
- Powering Up the Switch 64
- Statement 1030 65
- Removing the Fan Tray 74
- Installing the Fan Tray 75
- Power Supply Specifications 77
- 3 AC power cord receptacle 78
- Plug: CEI 23-16/7 86
- Cordset rating: 10 A, 250 V 86
- Length: 8 ft 2 in. (2.5 m) 86
- Connector: IEC 60320 C15 86
- Connector: 86
- Plug: BS 1363 87
- Adapter Specifications 91
- Receive optical bore 92
- Transmit optical bore 92
- Bail clasp 92
- Dust plug 92
- CWDM SFP Transceivers 95
- DWDM SFP Transceivers 97
- 10-GB SFP+ Transceivers 99
- OL-21561-02 100
- Console Port 101
- Ethernet Management Port 102
- Cables and Adapters 102
- Pin 1 and pin 8 103
- Cables and Adapters 104
- APPENDIX 105
- Getting Started 106
- Identifying Startup Problems 106
- LED Readings 107
- Contacting Customer Service 108
- Translated Safety Warnings 110
- Translated Safety Warnings 111
- Waarschuwing 113
- Varoitus 113
- 2006/95/EC and 2004/108/EC 151
- Numerics 157
Related products and manuals for Network switches Cisco 4948 - Catalyst Switch
(138 pages)
Network switches Cisco MGX 8950 Specifications
(642 pages)
(642 pages)
Network switches Cisco ME 3600X User Manual
(10 pages)
(10 pages)
Network switches Cisco NTP-E157 User Manual
(167 pages)
(167 pages)
Network switches Cisco IGX 8 Specifications
(298 pages)
(298 pages)
Network switches Cisco 8600 Specifications
(129 pages)
(129 pages)
© 2020, manymanuals.com. All rights reserved. | 0.750 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comments to this Manuals