Enterasys SecureStack C2H124-48 C2H124-48 Benutzerhandbuch

Produktcode
C2H124-48
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the complete stack. There is no need to download software images to 
individual stack units, only one software upgrade needs to be performed 
per stack. The image will be distributed to the individual stack members 
automatically. Port-mirroring is supported on individual switches as 
well as stack-wide, enabling network managers to easily monitor and 
troubleshoot any port in the stack.
Reliability and availability
The SecureStack C2 offers a variety of standards-based features to 
ensure network availability. These features include 802.1d Spanning 
Tree, 802.1w Rapid Spanning Tree, and 802.3ad Link Aggregation. All 
of these standards allow for redundant network connections, automatic 
failover and recovery capabilities. The SecureStack C2 switches support 
additional reliability features such as Distributed Link Aggregation 
Groups (six groups of eight ports)—a capability that supports link 
aggregation across multiple stack units thereby ensuring that a failure  
in a single unit does not disconnect the stack from the uplink to the  
core switch. 
Redundant stack management is supported where there is a primary 
and a secondary manager for managing the stack entity. All SecureStack 
C2 switches support Closed Loop Stacking, which enables the stack 
to continue working even if an individual switch member or cable 
connection fails. Power redundancy is available as an option for both the 
Power-over-Ethernet and standard Ethernet SecureStack C2 switches. 
The redundant power options allow a switch to operate from its own 
internal AC power supply or, if there is a failure, seamlessly failover to the 
external redundant power system.
Power-over-ethernet (Poe Ieee 802.3af) Support
Two switch models in the SecureStack C2 family provide a centralized 
IEEE 802.3afcompliant power source for VoIP phones, wireless access 
points (e.g., RoamAbout AP4102), and remote security scanner and 
cameras, eliminating the need for individual power sources for these 
devices. Both switches provide 48 volts of power over the normally 
used pairs of each Category 5 Ethernet cable with a total of 360 watts 
of power per switch. If all ports require Power-over-Ethernet, then the 
maximum amount of power required by a Class 2 device (7.5 watts) 
can be delivered to all ports. Any individual port can provide up to the 
maximum 15.4 watts specified in the IEEE standard.
The network manager has the ability to prioritize which ports receive 
power if the power demand exceeds the switch total of 360 watts. 
Special power-shedding support is included in both switches to enforce 
the network manager-specified priorities if the power demand exceeds 
the maximum wattage. Additionally, the SecureStack C2 PoE switches 
support a device-detection feature that enables them to work with 
powered as well as non-powered end devices. This feature prevents any 
damage from occurring when a port on either SecureStack C2 PoE switch 
is connected to any compliant RJ45 device that is already powered by 
its own power source. This feature also allows any mixture of Power-over-
Ethernet devices and standard Ethernet devices to be connected to a 
single switch. These SecureStack C2 PoE switches significantly simplify 
the installation and capital costs of APs, VoIP phones and security 
devices by allowing them to be installed in out-of-the-way locations that 
are without AC power thereby enabling maximum coverage.
10-Gigabit ethernet Support
One SecureStack C2 switch supports up to two full-line-rate, IEEE 
802.3ae-compliant, 10-Gigabit Ethernet uplinks for both switching 
and routing. The 10-Gigabit Ethernet connectivity is accomplished via 
10-Gigabit Small Form-factor Pluggable modules more commonly known 
as XFPs. The XFP modules occupy one-fifth the space and use one-half 
the power of other 10-Gigabit Ethernet solutions. The XFPs are hot-
pluggable so that neither the switch nor the XFPs can be damaged by the 
unexpected insertion or removal of the XFP. XFPs can support distances 
up to 300 meters over multimode fiber and 10 KM and 40 KM over 
single-mode fiber.
The modular flexibility of the XFP interface will allow this SecureStack 
C2 switch to support 10-Gigabit copper solutions as they become 
standardized and commercially available. The line-rate speed of these 
10-Gigabit uplinks gives a network manager the option to replace and 
increase the performance of a Distributed 1 Gigabit Link Aggregation 
Group, an especially important capability when additional fiber runs are 
in short demand. The SecureStack C2 triple-speed 10-Gigabit switch 
also supports Link Aggregation Groups, allowing a single switch to 
support 20 gigabits of uplink bandwidth.
Outstanding Configuration Flexibility
With the SecureStack C2 switch family, mixing and matching various 
types of switches is a snap. A small stack can be started with dual 
10/100 switches with redundant gigabit ethernet uplinks to the core. 
If Power-over-Ethernet is needed for remote access points or a trial 
test of VoIP phones, a 10/100 PoE switch can simply be added to the 
stack. As higher desktop speeds are required, 10/100/1000 switches 
can be added. As the stack grows, the demands on the uplinks to the 
core will increase. Distributed Link Aggregation can be used to increase 
bandwidth from a single gigabit up to eight gigabit. When more uplink 
bandwidth is required, a dual 10 Gb 10/100/1000 switch can simply 
be added to the stack. All of these various types of switches can be 
managed as a single entity with a single IP address and all of the 
switches in the stack run a common software image so there are no 
incompatibility issues between the switches. The simple flexibility of the 
SecureStack C2 stacking makes it an elegant solution.
The SecureStack C2 Switch Family
C2G124-24 
This SecureStack C2 switch features 24 ports of non-blocking 
10/100/1000 connectivity, four uplink ports supporting SFP (Small 
Form-factor Pluggable) Mini-GBICs and two integrated stacking ports. 
Ports 21 through 24 on this model have the flexibility to be mapped as 
either 10/100/1000 ports or as optical Gigabit Ethernet ports with the 
installation of a fiber transceiver in the appropriate SFP socket.
C2G124-48 
This SecureStack C2 switch features 48 ports of non-blocking 
10/100/1000 connectivity, four uplink ports supporting SFP (Small 
Form-factor Pluggable) Mini-GBICs and two integrated stacking 
ports. Ports 45 through 48 have the flexibility to be mapped as either 
10/100/1000 ports or as optical Gigabit Ethernet ports with the 
installation of a fiber transceiver in the appropriate SFP socket.