18
CN 3960 Hardware Installation Guide
O
VERVIEW
S
OFTWARE
O
VERVIEW
RADIUS
The Remote Authentication Dial-In User Service (RADIUS) protocol authenticates dial-in
users and authorizes their access to the requested device or service. This type of
authentication provides added security, ensuring that only the authenticated
administrator can access the Ciena switch for management configuration. Having a
central location facilitates usage/billing tracking and network statistics gathering.
Four-Group RMON
The SDS switches use four-group RMON for management. These four groups include:
•
Statistics — provides performance information, packet size distribution, and error
reports.
•
History — short term and long term statistics. History statistics can be configured by
the user to collect various statistics at user-definable intervals. These statistics can
then be used to monitor network performance.
•
Events — user-configured parameters that allow thresholds to be set that trigger
alarms based on current statistics.
•
Alarms — parameters in statistics can be configured to trigger alarms. Alarms, in turn,
can trigger SNMP traps or other elements.
VLAN Management
Provisioning and maintaining VLANs is fast and easy using ESM. Each VLAN is established
with its own traffic rate and billing information to ensure that services are delivered
without noticeable jitter or delay. Valuable usage statistics are also collected. VLANs are
identified using 802.1Q tags.
As needed, each VLAN can carry multiple services or one single service. As a subscriber
signs up for a service, a VLAN is provisioned for the subscriber. Each service is carefully
delivered to the end device (set top box, PC, IP phone, etc.) complete with management
functionality, priorities, and counters. Packets from multiple service providers can be
delivered to the same subscriber without mixing traffic or requiring complicated access
control mechanisms. VLANs provide security among neighbors of the same service or
different services, as each subscriber can be configured with a private VLAN to the service
provider.
Prioritization
QoS entries can be created that give certain traffic a greater or lesser priority than it
would otherwise receive. Traffic can be classified based on the port a frame is received
on and the VLAN ID tag included in the frame, as well as the intended egress port. If a
frame does not include tag information, the VLAN membership of the ingress port is used
as the VLAN ID. If an incoming traffic flow does not match any configured QoS entries,
the flow is placed into a default traffic queue based upon its egress port.
IGMP
Internet Gateway Management Protocol (IGMP) is used to support IP multicasting. Defined
in RFC 1112, IGMP defines how hosts and routers within the same network establish
membership in multicast group streams. The use of IGMP allows the SDS switches to limit
the broadcast of multicast streams without user intervention.
All manuals and user guides at all-guides.com
Summary of Contents for CN 3960
Page 50: ...46 CN 3960 Hardware Installation Guide All manuals and user guides at all guides com...
Page 70: ...CN 3960 Hardware Installation Guide All manuals and user guides at all guides com...
Page 71: ...All manuals and user guides at all guides com a l l g u i d e s c o m...
Page 72: ...Copyright 2009 Ciena Corporation All manuals and user guides at all guides com...