Zyxel IES-5106 [46/1156] Cluster management

Zyxel IES-5106 [46/1156] Cluster management
Chapter 1 Getting to Know Your MSC
Management Switch Card User’s Guide
46
Downstream Broadcast VLAN Control
Downstream broadcast VLAN control allows you to block downstream broadcast packets from being
sent to specified VLANs on specified ports. This helps to reduce downstream bandwidth
requirements on a subscriber line.
Cluster Management
Cluster management allows you to access the Web Configurators and CLIs of multiple DSLAMs
through one DSLAM, called the cluster manager. The IESs must be directly connected and be in the
same VLAN group so as to be able to communicate with one another.
Queuing
Queuing is used to help solve performance degradation when there is network congestion. Two
scheduling services are supported: Strict Priority Queuing (SPQ) and Weighted Round Robin (WRR)
Queuing. This allows the MSC to maintain separate queues for packets from each individual source
or flow and prevent a source from monopolizing the bandwidth.
Trunking
The management switch card can trunk (aggregate port links into one logical link) Gigabit Ethernet
interfaces.
Isolation (per-VLAN)
Use isolation to block the DSL subscribers in a specific VLAN from sending traffic directly to each
other. The DSL subscribers can only send and receive traffic to and from the ports that are set to
uplink mode. The Integrated Ethernet Switch blocks access between the DSL ports.
Link Aggregation Control Protocol (LACP)
The MSC supports the link aggregation IEEE 802.3ad protocol. 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.
IEEE 802.1Q Tagged VLAN
Your MSC uses the IEEE 802.1Q Tagged VLAN (Virtual Local Area Network), which allows your
device to deliver tagged/untagged frames to and from its ports.
Subnet Based VLAN
Subnet based VLAN allows you to group traffic into logical VLANs based on the source IP subnet you
specify. When a frame is received on a port, the MSC checks if a tag is added already and the IP
subnet it came from. The untagged packets from the same IP subnet are then placed in the same
subnet based VLAN. One advantage of using subnet based VLANs is that priority can be assigned to
traffic from the same IP subnet.

Содержание

Скачать