Alloy Computer Products GSM-16T2SFP Benutzerhandbuch

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Alloy Computer Products Pty Ltd Copyright ©2006

 

QoS: 

These switches offer powerful Quality of Service (QoS) functions. This feature 
adds support of TOS fields within the IP packet header  (equal DSCP low 3 bits) 
on Layer 3 of the network framework and 6 types of network transmission 
events on Layer 4. QoS support is important for real-time applications based on 
information taken from Layer 2 to Layer  4, such as VoIP. 

VLAN: 

All switch models support Port-based VLAN and IEEE802.1Q Tagged VLAN, 
with support for 256 active VLAN's having VLAN ID’s from 1 to 4094. The VLAN 
feature in the switch offers the benefits of both security and performance. VLAN 
is used to isolate traffic between different users which provides better security. 
Limiting the broadcast traffic to within the same VLAN broadcast domain also 
enhances performance. 

Port Trunking:  Allows two or more links to be aggregated together to form a Link Aggregation 

Group (LAG). Up to 12 Gigabit ports can be set up per trunk, and a switch can 
support up to 8 trunking groups. Port trunks are useful for switch-to-switch 
cascading, providing very high full-duplex connection speeds. 

Port Mirroring:  Port mirroring copies traffic from a specific port to a target port.  This 
 

mechanism helps track network errors or abnormal packet transmission 

 

without interrupting the flow of data. 

All models support bandwidth allocation rating on a per  

Control: 

port basis. Ingress and egress throughput can be limited to a pre-set  

                            level appropriate to the traffic generally handled on a specific port. 
 
SNMP/RMON: 

SNMP is used to remotely monitor and configure SNMP aware devices from a 
central SNMP management device, such as SNMP software. 
RMON is the abbreviation of Remote Network Monitoring and is a branch of the 
SNMP MIB. 
All switch models support MIB-2 (RFC 1213), Bridge MIB (RFC 1493), RMON 
MIB (RFC 1757)-statistics Group 1,2,3,9, VLAN MIB (802.1Q, RFC2674), 
Ethernet MIB (RFC 1643) and so on. 
 

IGMP Snooping:IGMP Snooping provides a method for intelligent forwarding of multicast 

packets within a Layer 2 broadcast domain. By snooping IGMP registration 
information, a distribution list of workstations is formed that determines which 
end-stations will receive packets with a specific multicast address. All GSM 
switches support IGMP version 2 (RFC 2236). 

 
Note:  * See Appendix A “Technical Specifications” for further details 
 

 

 
 

Before you start installing your switch, verify that the package contains the following:

 

 

•  A GSM-16T2SFP, GSM-24T2SFP or GSM-8T16SFP Gigabit SNMP Managed Switch 

•  Mounting Accessories (for 19” Rack Shelf mounting) 

•  This Users Manual CD-ROM 

•  AC Power Cord 

  

Please notify your supplier immediately if any of the aforementioned items are missing or 
damaged.