Spanning Tree Protocols; Stp And Rstp - ZyXEL Communications MSC1000G User Manual

MSC1000G User's Guide
Table 96 Switch Setup (continued)
LABEL
Algo_Type
Queue 0~7
Apply
Cancel

13.6 Spanning Tree Protocols

The switch supports Spanning Tree Protocol (STP), Rapid Spanning Tree Protocol (RSTP)
and Multiple Spanning Tree Protocol (MSTP) as defined in the following standards.
• IEEE 802.1D Spanning Tree Protocol
• IEEE 802.1w Rapid Spanning Tree Protocol
• IEEE 802.1s Multiple Spanning Tree Protocol

13.6.1 STP and RSTP

RSTP adds rapid reconfiguration capability to STP. The switch supports RSTP and the earlier
STP. RSTP and STP detect and break network loops and provide backup links between
switches, bridges or routers. They allow a device to interact with other RSTP or STP-aware
devices in your network to ensure that only one path exists between any two stations on the
network. The switch uses RSTP by default but can still interoperate with STP switches
(although without RSTP's benefits).
220
DESCRIPTION
Use this field to set a Gigabit Ethernet interface's queuing algorithm. If trunking is
enabled, you set this for one interface and it applies to the whole trunk group.
Select spq to use Strict Priority Queuing (SPQ). SPQ services queues based on
priority only. When the highest priority queue empties, traffic on the next highest-
priority queue begins.
Select wrr to use Weighted Round Robin (WRR) Scheduling. WRR services
queues on a rotating basis based on their queue weight (the number you configure
in the queue weight fields). Queues with larger weights get more service than
queues with smaller weights.
These fields apply when you select the wrr queuing algorithm in the Algo_Type
field.
Use these fields to set the priority weight (0~15) of each queue on a Gigabit
Ethernet interface (or trunk group if trunking is enabled). The higher a queue's
weight, the more service it gets.
Click Apply to save the changes in this screen to the system's volatile memory.
The system loses these changes if it is turned off or loses power, so use the
Config Save on the navigation panel and then the Save button to save your
changes to the non-volatile memory when you are done configuring.
Click Cancel to begin configuring this screen afresh.
Chapter 13 Switch Screens