Planet Technology G.SHDSL.bis Bridge Router GRT-504 - Manual (Page 115)

GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual
7.4.7 STP
Move cursor “ >> “ to STP and press enter.
-----------------------------------------------------------------------------
<STP Status>
Bridge ID / Designated ROOT ID : 8000-000379-000001 / 8000-000379-000001
ROOT Port / ROOT Path Cost : None / 0
Max Age/Forward Delay/Hello Time: 20 / 15 / 2(secs)
LAN1 LAN2 LAN3 LAN4 WAN1 WAN2 WAN3 WAN4 WAN5 WAN6 WAN7 WAN8
---------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
State D LN D D D D D D D D D D
Priority 128 128 128 128 128 128 128 128 128 128 128 128
Path Cost 100 100 100 100 500 500 500 500 500 500 500 500
<Hint> D-Disable, B-Blocking, LS-Listening, LN-Learning, F-Forwarding.
-----------------------------------------------------------------------------
You can view all STP status on all LANs and WANs ports.
The STP state per LANs and WANs are as following:
Blocking - A port that would cause a switching loop, no user data is sent or received but it may go
into forwarding mode if the other links in use were to fail and the spanning tree algorithm
determines the port may transition to the forwarding state. BPDU data is still received in blocking
state.
Listening - The switch processes BPDUs and awaits possible new information that would cause it
to return to the blocking state.
Learning - While the port does not yet forward frames (packets) it does learn source addresses
from frames received and adds them to the filtering database (switching database)
Forwarding - A port receiving and sending data, normal operation. STP still monitors incoming
BPDUs that would indicate it should return to the blocking state to prevent a loop.
Disabled - Not strictly part of STP, a network administrator can manually disable a port
114