User manual
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4.
Forwarding
- A port receiving and sending data, normal operation. RSTP still monitors incoming BPDUs
that would indicate it should return to the blocking state to prevent a loop.
The example of Configuration: The priority of network bridge is ―32768‖
，
If there did not have network ID
less than itself, itself is root network bridge. There did not have same network ID in network. Every 2 seconds,
the network bridge will transmit BPDU message to all appoint port. If did not receive BPDU message more than
20 seconds, it realized port invalid, will calculate the status of network bridge again. Each status exchange for
each other if need to transmit, need to wait 15 seconds
5.8.3 Port Trunking
In telecommunications, trunking is a method for a system to provide network access to many clients by sharing a
set of lines or frequencies instead of providing them individually. This is analogous to the structure of a tree with
one trunk and many branches. Trunking, is set by the configuration software, the two or more physical ports get
together into a logical path to increase the bandwidth between the switch and the network node. Trunking is a
packaging technology, it is a peer to peer link, both ends of the link are switches, it can be a switch and a router,
and also can be a host, switch or router.
Based on port trunking function that allows between two or more ports
between switches, switches and routers, hosts the switch or router connected in parallel to provide for the
simultaneous transmission of higher bandwidth and greater throughput, significantly entire network capacity.
Trunking is more economical to increase the bandwidth between the switch and network device, such as servers,
routers, workstations, or other switches. Trunking function is to integrate more than one physical port (typically
2-4) to a logical channel.
Device supported 2 trunking group, operate method: choice apply, choice the port need to trunking the port
list, Choice setting, available after reboot. If the port already set to Ring port, it cannot set to trunking port.
Each trunking group at least have 2 port member, at more 4. 1 port cannot exist in 2 trunking group.
1. The trunking groups require all the attributes can be the same, including speed, duplex, STP state etc.
2.If you do not confirm the STP state, please disable RSTP function, or close others, leaving only one STP channel.
3. Port 1 as the system reserved, cannot be used as trunking.
4. The ports of having been set to the port aggregation that cannot be set to ring ports.
