ZyXEL Communications ES-2108, User Manual, Page: 252 / 284

Appendix A Product Specifications
ES-2108 Series User’s Guide
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Differentiated Services
(DiffServ) With DiffServ, the Switch marks packets so that they receive specific per-
hop treatment at DiffServ-compliant network devices along the route
based on the application types and traffic flow.
Queuing Queuing is used to help solve performance degradation when there is
network congestion. Three scheduling services are supported: Strict
Priority Queuing (SPQ), Weighted Round Robin (WRR) and Weighted
Fair Queuing (WFQ). This allows the Switch to maintain separate
queues for packets from each individual source or flow and prevent a
source from monopolizing the bandwidth.
Port Mirroring Port mirroring allows you to copy traffic going from one or all ports to
another or all ports in order that you can examine the traffic from the
mirror port (the port you copy the traffic to) without interference.
Static Route Static routes tell the Switch how to forward IP traffic when you configure
the TCP/IP parameters manually.
Multicast VLAN Registration
(MVR) Multicast VLAN Registration (MVR) is designed for applications (such as
Media-on-Demand (MoD)) using multicast traffic across a network. MVR
allows one single multicast VLAN to be shared among different
subscriber VLANs on the network.
This improves bandwidth utilization by reducing multicast traffic in the
subscriber VLANs and simplifies multicast group management.
STP (Spanning Tree
Protocol) / RSTP (Rapid
STP) (R)STP detects and breaks network loops and provides backup links
between switches, bridges or routers. It allows a Switch to interact with
other (R)STP -compliant switches in your network to ensure that only
one path exists between any two stations on the network.
MSTP (Multiple Spanning
Tree Protocol) Multiple Spanning Tree Protocol (IEEE 802.1s) is backward-compatible
with STP/RSTP. In MSTP, switching devices are grouped into a region
which appears as a single network to the outside world. With MSTP, a
switch can set up more than one spanning tree. In addition, more than
one VLAN can exist in a spanning tree.
Loop Guard Use the loop guard feature to protect against network loops on the edge
of your network.
IP Source Guard Use IP source guard to filter unauthorized ARP packets in your network.
Link Aggregation Link aggregation (trunking) is the grouping of physical ports into one
logical higher-capacity link. You may want to trunk ports if for example, it
is cheaper to use multiple lower-speed links than to under-utilize a high-
speed, but more costly, single-port link.
Port Authentication and
Security For security, the Switch allows authentication using IEEE 802.1x with an
external RADIUS server and port security that allows only packets with
dynamically learned MAC addresses and/or configured static MAC
addresses to pass through a port on the Switch.
Authentication and
Accounting The Switch supports authentication and accounting services via RADIUS
and AAA servers.
Device Management Use the web configurator or commands to easily configure the rich range
of features on the Switch.
Port Cloning Use the port cloning feature to copy the settings you configure on one
port to another port or ports.
Syslog The Switch can generate syslog messages and send it to a syslog
server.
Table 104 Firmware Specifications
FEATURE DESCRIPTION