Закольцовка за 21 портом.
Цитата:
Command: show loopdetect
Loopdetect Global Settings
---------------------------
Loopdetect Status : Enabled
Loopdetect Interval : 5
Recover Time : 300
Mode : Port-Based
Command: show loopdetect ports 21-24
Port Loopdetect State Loop Status
------ ------------------ ----------
21 Enabled Loop!
22 Enabled Normal
23 Enabled Normal
24 Enabled Normal
К портам 23, 24 подключены другие коммутаторы DES-3526 c аналогичными настройками.
Цитата:
Command: show stp
STP Bridge Global Settings
---------------------------
STP Status : Enabled
STP Version : RSTP
Max Age : 20
Hello Time : 2
Forward Delay : 15
Max Hops : 20
TX Hold Count : 6
Forwarding BPDU : Enabled
Цитата:
Command: show stp instance_id
STP Instance Settings
---------------------------
Instance Type : CIST
Instance Status : Enabled
Instance Priority : 32768(bridge priority : 32768, sys ID ext : 0 )
STP Instance Operational Status
--------------------------------
Designated Root Bridge : 32768/1C-BD-B9-E5-BC-99
External Root Cost : 0
Regional Root Bridge : 32768/1C-BD-B9-E5-BC-99
Internal Root Cost : 0
Designated Bridge : 32768/1C-BD-B9-E5-BC-99
Root Port : None
Max Age : 20
Forward Delay : 15
Last Topology Change : 258
Topology Changes Count : 22
Цитата:
Command: show stp ports 21
MSTP Port Information
----------------------
Port Index : 21 , Hello Time: 2 /2 , Port STP enabled
Restricted role : False , Restricted TCN : False
External PathCost : Auto /200000 , Edge Port : False/No , P2P : Auto /Yes
Port Forward BPDU : enabled
BPDU Type : RSTP
Msti Designated Bridge Internal PathCost Prio Status Role
----- ------------------ ----------------- ---- ----------- ----------
0 N/A 200000 128 Disabled Disabled
Command: show stp ports 23
MSTP Port Information
----------------------
Port Index : 23 , Hello Time: 2 /2 , Port STP enabled
Restricted role : False , Restricted TCN : False
External PathCost : Auto /200000 , Edge Port : False/No , P2P : Auto /Yes
Port Forward BPDU : enabled
BPDU Type : RSTP
Msti Designated Bridge Internal PathCost Prio Status Role
----- ------------------ ----------------- ---- ----------- ----------
0 8000/1CBDB9E5BC99 200000 128 Forwarding Designated
Command: show stp ports 24
MSTP Port Information
----------------------
Port Index : 24 , Hello Time: 2 /2 , Port STP enabled
Restricted role : False , Restricted TCN : False
External PathCost : Auto /200000 , Edge Port : False/No , P2P : Auto /Yes
Port Forward BPDU : enabled
BPDU Type : RSTP
Msti Designated Bridge Internal PathCost Prio Status Role
----- ------------------ ----------------- ---- ----------- ----------
0 8000/1CBDB9E5BC99 200000 128 Forwarding Designated
Закольцовка определяется 1 раз. По истечении Recover Time порт 21 включается, коммутатор зависает. Так ведет себя коммутатор с прошивкой из 6-ой ветки.