Raisecom
ISCOM2600G-HI (A) Series Configuration Guide
Raisecom Proprietary and Confidential
Copyright © Raisecom Technology Co., Ltd.
Figure 2-11 Network storm due to loopback
Spanning Tree Protocol (STP) is compliant to IEEE 802.1d standard and used to remove data
physical loop in data link layer in the LAN.
The ISCOM2600G-HI series switch running STP can process Bridge Protocol Data Unit
(BPDU) with each other for the election of root switch and selection of root port and
designated port. It also can block loop interface on the ISCOM2600G-HI series switch
logically according to the selection results, and finally trims the loop network structure to tree
network structure without loop which takes an ISCOM2600G-HI series switch as root. This
prevents the continuous proliferation and limitless circulation of packet on the loop network
from causing broadcast storms and avoids declining packet processing capacity caused by
receiving the same packets repeatedly.
Figure 2-12 shows loop networking with STP.
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