User`s manual

IKS-6726 Featured Functions
3-29
Role
Setting Description Factory Default
Head Select as Head Switch
Member Select as Member Switch
Tail Select as Tail Switch
Member
Head Role
Setting Description Factory Default
Head Port Select any port to be the head port. Port 1-1
(without Gigabit Ethernet module)
Port 4-1
(with Gigabit Ethernet module)
Member Port Select any port to be the member port. Port 1-2
(without Gigabit Ethernet module)
Port 4-2
(with Gigabit Ethernet module)
Member Role
Setting Description Factory Default
1st Member port Select any port to be the 1st member port Port 1-1
(without Gigabit Ethernet module)
Port 4-1
(with Gigabit Ethernet module)
2nd Member port Select any port to be the 2nd member port Port 1-2
(without Gigabit Ethernet module)
Port 4-2
(with Gigabit Ethernet module)
Tail Role
Setting Description Factory Default
Tail Port Select any port to be the tail port. Port 1-1
(without Gigabit Ethernet module)
Port 4-1
(with Gigabit Ethernet module)
Member Port Select any port to be the member port. Port 1-2
(without Gigabit Ethernet module)
Port 4-2
(with Gigabit Ethernet module)
The STP/RSTP Concept
Spanning Tree Protocol (STP) was designed to help reduce link failures in a network and provide protection
from loops. Networks that have a complicated architecture are prone to broadcast storms caused by
unintended loops in the network. The IKS-6726’s STP feature is disabled by default. To be completely effective,
you must enable RSTP/STP on every IKS-6726 connected to your network.
Rapid Spanning Tree Protocol (RSTP) implements the Spanning Tree Algorithm and Protocol defined by IEEE
Std 802.1w-2001. RSTP provides the following benefits:
The topology of a bridged network will be determined much more quickly compared to STP.
RSTP is backward compatible with STP, making it relatively easy to deploy. For example:
It defaults to sending 802.1D style BPDUs if packets with this format are received.
STP (802.1D) and RSTP (802.1w) can operate on different ports of the same IKS-6726. This feature is
particularly helpful when IKS-6726 ports connect to older equipment, such as legacy switches.