Зарегистрирован: Вт ноя 22, 2011 08:27 Сообщений: 9
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Здравствуйте! У меня возникло несколько вопросов по MSTP. Имеется сеть из семи коммутаторов, DES-3828 (Root) DES-3526 и DES-3550, соединённые в кольцо. Схема выглядит примерно так:  Сейчас между 3 и 5 свичами линк разомкнут физически. Проблема заключается в том что 5 и 7 свичи периодически перестраивают кольцо Вот кусок логов с 5 свича. MAC:1C-BD-B9-83-52-E4 - это 7 свич MAC:00-1C-F0-24-85-C0 - это 1 свич Root 8362 2011/11/22 09:34:07 CIST New Root bridge selected (Instance:0, MAC:00-1C-F0-24-85-C0, Priority:4096) 8361 2011/11/22 09:33:54 CIST New Root bridge selected (Instance:0, MAC:1C-BD-B9-83-52-E4, Priority:32768) 8360 2011/11/22 09:33:48 CIST New Root bridge selected (Instance:0, MAC:00-1C-F0-24-85-C0, Priority:4096) 8359 2011/11/22 09:33:47 CIST New Root bridge selected (Instance:0, MAC:1C-BD-B9-83-52-E4, Priority:32768) 8358 2011/11/22 09:33:39 CIST New Root bridge selected (Instance:0, MAC:00-1C-F0-24-85-C0, Priority:4096) 8357 2011/11/22 09:33:38 CIST New Root bridge selected (Instance:0, MAC:1C-BD-B9-83-52-E4, Priority:32768) 8356 2011/11/22 09:33:32 CIST New Root bridge selected (Instance:0, MAC:00-1C-F0-24-85-C0, Priority:4096) 8355 2011/11/22 09:33:26 CIST New Root bridge selected (Instance:0, MAC:1C-BD-B9-83-52-E4, Priority:32768) 8354 2011/11/22 09:32:12 CIST New Root bridge selected (Instance:0, MAC:00-1C-F0-24-85-C0, Priority:4096) 8353 2011/11/22 09:32:04 CIST New Root bridge selected (Instance:0, MAC:1C-BD-B9-83-52-E4, Priority:32768) 8352 2011/11/22 09:31:07 CIST New Root bridge selected (Instance:0, MAC:00-1C-F0-24-85-C0, Priority:4096) 8351 2011/11/22 09:31:05 CIST New Root bridge selected (Instance:0, MAC:1C-BD-B9-83-52-E4, Priority:32768) 8350 2011/11/22 09:30:58 CIST New Root bridge selected (Instance:0, MAC:00-1C-F0-24-85-C0, Priority:4096) 8349 2011/11/22 09:30:52 CIST New Root bridge selected (Instance:0, MAC:1C-BD-B9-83-52-E4, Priority:32768)
8341 2011/11/22 08:20:33 CIST New Root bridge selected (Instance:0, MAC:00-1C-F0-24-85-C0, Priority:4096) 8340 2011/11/22 08:20:22 CIST New Root bridge selected (Instance:0, MAC:1C-BD-B9-83-52-E4, Priority:32768)
8333 2011/11/22 07:29:06 CIST New Root bridge selected (Instance:0, MAC:00-1C-F0-24-85-C0, Priority:4096) 8332 2011/11/22 07:29:04 CIST New Root bridge selected (Instance:0, MAC:1C-BD-B9-83-52-E4, Priority:32768) 8331 2011/11/22 07:28:52 CIST New Root bridge selected (Instance:0, MAC:00-1C-F0-24-85-C0, Priority:4096) 8330 2011/11/22 07:28:32 CIST New Root bridge selected (Instance:0, MAC:1C-BD-B9-83-52-E4, Priority:32768) 8329 2011/11/22 07:28:26 CIST New Root bridge selected (Instance:0, MAC:00-1C-F0-24-85-C0, Priority:4096) 8328 2011/11/22 07:28:24 CIST New Root bridge selected (Instance:0, MAC:1C-BD-B9-83-52-E4, Priority:32768) С 7 свича 1551 2011/11/22 09:35:20 CIST New Root bridge selected (Instance:0, MAC:00-1C-F0-24-85-C0, Priority:4096) 1550 2011/11/22 09:35:07 CIST New Root bridge selected (Instance:0, MAC:1C-BD-B9-83-52-E4, Priority:32768) 1549 2011/11/22 09:35:01 CIST New Root bridge selected (Instance:0, MAC:00-1C-F0-24-85-C0, Priority:4096) 1548 2011/11/22 09:34:58 CIST New Root bridge selected (Instance:0, MAC:1C-BD-B9-83-52-E4, Priority:32768) 1547 2011/11/22 09:34:53 CIST New Root bridge selected (Instance:0, MAC:00-1C-F0-24-85-C0, Priority:4096) 1546 2011/11/22 09:34:49 CIST New Root bridge selected (Instance:0, MAC:1C-BD-B9-83-52-E4, Priority:32768) 1545 2011/11/22 09:34:43 CIST New Root bridge selected (Instance:0, MAC:00-1C-F0-24-85-C0, Priority:4096) 1544 2011/11/22 09:34:40 Topology changed (Instance:0, port:25) 1543 2011/11/22 09:34:37 CIST New Root bridge selected (Instance:0, MAC:1C-BD-B9-83-52-E4, Priority:32768) 1542 2011/11/22 09:33:25 CIST New Root bridge selected (Instance:0, MAC:00-1C-F0-24-85-C0, Priority:4096) 1541 2011/11/22 09:33:19 Topology changed (Instance:0, port:25) 1540 2011/11/22 09:33:16 CIST New Root bridge selected (Instance:0, MAC:1C-BD-B9-83-52-E4, Priority:32768) 1539 2011/11/22 09:32:28 CIST New Root bridge selected (Instance:0, MAC:00-1C-F0-24-85-C0, Priority:4096) 1538 2011/11/22 09:32:27 CIST New Root bridge selected (Instance:0, MAC:1C-BD-B9-83-52-E4, Priority:32768) 1537 2011/11/22 09:32:21 CIST New Root bridge selected (Instance:0, MAC:00-1C-F0-24-85-C0, Priority:4096) 1536 2011/11/22 09:32:17 CIST New Root bridge selected (Instance:0, MAC:1C-BD-B9-83-52-E4, Priority:32768) 1535 2011/11/22 09:32:11 CIST New Root bridge selected (Instance:0, MAC:00-1C-F0-24-85-C0, Priority:4096) 1534 2011/11/22 09:32:07 Topology changed (Instance:0, port:25) 1533 2011/11/22 09:32:04 CIST New Root bridge selected (Instance:0, MAC:1C-BD-B9-83-52-E4, Priority:32768) 1532 2011/11/22 08:21:47 CIST New Root bridge selected (Instance:0, MAC:00-1C-F0-24-85-C0, Priority:4096) 1531 2011/11/22 08:21:37 Topology changed (Instance:0, port:25) 1530 2011/11/22 08:21:36 CIST New Root bridge selected (Instance:0, MAC:1C-BD-B9-83-52-E4, Priority:32768) 1529 2011/11/22 07:30:19 Topology changed (Instance:0, port:25) 1528 2011/11/22 07:30:18 CIST New Root bridge selected (Instance:0, MAC:00-1C-F0-24-85-C0, Priority:4096) 1527 2011/11/22 07:30:16 CIST New Root bridge selected (Instance:0, MAC:1C-BD-B9-83-52-E4, Priority:32768) 1526 2011/11/22 07:30:11 CIST New Root bridge selected (Instance:0, MAC:00-1C-F0-24-85-C0, Priority:4096) 1525 2011/11/22 07:30:10 CIST New Root bridge selected (Instance:0, MAC:1C-BD-B9-83-52-E4, Priority:32768) 1524 2011/11/22 07:30:05 CIST New Root bridge selected (Instance:0, MAC:00-1C-F0-24-85-C0, Priority:4096) 1523 2011/11/22 07:29:44 CIST New Root bridge selected (Instance:0, MAC:1C-BD-B9-83-52-E4, Priority:32768) 1522 2011/11/22 07:29:39 Topology changed (Instance:0, port:25) 1521 2011/11/22 07:29:39 CIST New Root bridge selected (Instance:0, MAC:00-1C-F0-24-85-C0, Priority:4096) 1520 2011/11/22 07:29:36 CIST New Root bridge selected (Instance:0, MAC:1C-BD-B9-83-52-E4, Priority:32768) С 6 свича. Время не настроено, логи за тот же период. 1304 00007 days 14:48:54 Port 3 link up, 100Mbps FULL duplex 1303 00007 days 14:48:50 Port 3 link down 1302 00007 days 14:48:40 Topology changed (Instance:0, port:49) 1301 00007 days 14:48:33 Port 3 link up, 100Mbps FULL duplex 1300 00007 days 14:48:22 Port 3 link down 1299 00007 days 14:47:04 Port 3 link up, 100Mbps FULL duplex 1298 00007 days 14:46:57 Port 3 link down 1297 00007 days 14:46:42 Port 3 link up, 100Mbps FULL duplex 1296 00007 days 14:46:07 Topology changed (Instance:0, port:49) 1295 00007 days 14:45:50 Port 3 link down 1294 00007 days 13:35:18 Port 25 link up, 100Mbps FULL duplex 1293 00007 days 13:35:18 Port 25 link down 1292 00007 days 13:34:42 Port 25 link up, 100Mbps FULL duplex 1291 00007 days 12:44:03 Topology changed (Instance:0, port:49) 1290 00007 days 12:43:54 Topology changed (Instance:0, port:49) 1289 00007 days 12:43:44 Port 42 link up, 100Mbps FULL duplex 1288 00007 days 12:43:44 Port 42 link down 1287 00007 days 12:43:37 Port 42 link up, 100Mbps FULL duplex 1286 00007 days 12:43:31 Port 42 link down 1285 00007 days 12:43:24 Port 42 link up, 100Mbps FULL duplex С 1 свича (Root). По этим логам видно как часто это происходит 7079 2011/11/22 09:34:08 Topology changed 7078 2011/11/22 09:31:35 Topology changed 7077 2011/11/22 07:29:21 Topology changed 7072 2011/11/21 09:02:48 Topology changed 7071 2011/11/19 16:04:14 Topology changed 7070 2011/11/19 11:25:08 Topology changed 7069 2011/11/19 11:13:53 Topology changed 7068 2011/11/19 08:44:06 Topology changed 7067 2011/11/18 17:17:39 Topology changed 7066 2011/11/18 14:42:58 Topology changed 7065 2011/11/18 10:36:10 Topology changed 7064 2011/11/18 08:59:38 Topology changed 7063 2011/11/18 08:42:36 Topology changed 7062 2011/11/17 16:37:24 Topology changed 7061 2011/11/17 12:42:11 Topology changed 7060 2011/11/17 08:24:13 Topology changed 7059 2011/11/17 08:21:46 Topology changed 7058 2011/11/16 23:47:39 Topology changed 7057 2011/11/16 17:25:50 Topology changed 7056 2011/11/16 17:02:21 Topology changed 7055 2011/11/16 17:01:46 Topology changed 7054 2011/11/16 16:53:47 Topology changed 7053 2011/11/16 16:52:34 Topology changed 7052 2011/11/16 16:51:58 Topology changed 7051 2011/11/16 16:50:27 Topology changed 7050 2011/11/16 16:49:48 Topology changed 7049 2011/11/16 12:10:09 Topology changed Настройки 1 свича Root. Они в принципе везде одинаковые Device Type : DES-3828 Fast-Ethernet Switch Combo Port Type : 1000Base-LX + 1000Base-LX MAC Address : 00-1C-F0-24-85-C0
Boot PROM Version : Build 0.00.010 Firmware Version : Build 3.00.B57 Hardware Version : 1A2G
DES-3800:admin#show stp Command: show stp
STP Bridge Global Settings --------------------------- STP Status : Enabled STP Version : MSTP Max Age : 20 Forward Delay : 15 Max Hops : 20 TX Hold Count : 3 Forwarding BPDU : Enabled Loopback Detection: Enabled LBD Recover Time : 60
DES-3800:admin#show stp instance_id Command: show stp instance_id
STP Instance Settings --------------------------- Instance Type : CIST Instance Status : Enabled Instance Priority : 4096 (bridge priority : 4096 , sys ID ext : 0 )
STP Instance Operational Status -------------------------------- Designated Root Bridge : 4096 /00-1C-F0-24-85-C0 External Root Cost : 0 Regional Root Bridge : 4096 /00-1C-F0-24-85-C0 Internal Root Cost : 0 Designated Bridge : 4096 /00-1C-F0-24-85-C0 Root Port : None Max Age : 20 Forward Delay : 15 Last Topology Change : 4052 Topology Changes Count : 3304
DES-3800:admin#show stp mst_config_id Command: show stp mst_config_id
Current MST Configuration Identification ----------------------------------------
Configuration Name : [RTKmstp ] Revision Level :0 MSTI ID Vid list ------- ----------- CIST 1-4094
DES-3800:admin#show stp ports Command: show stp ports
MSTP Port Information ---------------------- Port Index : 23 , Hello Time: 2 /2 , Port STP disabled LBD : No External PathCost : Auto/200000 , Edge Port : No /No , P2P : True /Yes Port Forward BPDU disabled
Msti Designated Bridge Internal PathCost Prio Status Role ----- ------------------ ----------------- ---- ----------- ---------- 0 N/A 200000 128 Disabled Disabled
MSTP Port Information ---------------------- Port Index : 24 , Hello Time: 2 /2 , Port STP disabled LBD : No External PathCost : Auto/200000 , Edge Port : No /No , P2P : True /Yes Port Forward BPDU disabled
Msti Designated Bridge Internal PathCost Prio Status Role ----- ------------------ ----------------- ---- ----------- ---------- 0 N/A 200000 128 Forwarding NonStp
MSTP Port Information ---------------------- Port Index : 25 , Hello Time: 2 /2 , Port STP enabled LBD : No External PathCost : Auto/20000 , Edge Port : No /No , P2P : True /Yes Port Forward BPDU enabled
Msti Designated Bridge Internal PathCost Prio Status Role ----- ------------------ ----------------- ---- ----------- ---------- 0 1000/001CF02485C0 20000 128 Forwarding Designated
MSTP Port Information ---------------------- Port Index : 26 , Hello Time: 2 /2 , Port STP enabled LBD : No External PathCost : Auto/20000 , Edge Port : No /No , P2P : True /Yes Port Forward BPDU enabled
Msti Designated Bridge Internal PathCost Prio Status Role ----- ------------------ ----------------- ---- ----------- ---------- 0 1000/001CF02485C0 20000 128 Forwarding Designated Настройки 5 свича Device Type : DES-3526 Fast-Ethernet Switch Combo Port Type : 1000Base-T + 1000Base-LX MAC Address : 1C-BD-B9-E6-49-3C
Boot PROM Version : Build 5.00.011 Firmware Version : Build 5.01.B65 Hardware Version : A4
DES-3526:admin#show stp Command: show stp
STP Bridge Global Settings --------------------------- STP Status : Enabled STP Version : MSTP Max Age : 20 Forward Delay : 15 Max Hops : 20 TX Hold Count : 6 Forwarding BPDU : Enabled
STP Instance Settings --------------------------- Instance Type : CIST Instance Status : Enabled Instance Priority : 32768(bridge priority : 32768, sys ID ext : 0 )
DES-3526:admin#show stp instance_id Command: show stp instance_id
STP Instance Operational Status -------------------------------- Designated Root Bridge : 4096 /00-1C-F0-24-85-C0 External Root Cost : 20000 Regional Root Bridge : 32768/1C-BD-B9-E6-49-3C Internal Root Cost : 0 Designated Bridge : 32768/1C-BD-B9-83-52-E4 Root Port : 26 Max Age : 20 Forward Delay : 15 Last Topology Change : 513811 Topology Changes Count : 21
DES-3526:admin#show stp mst_config_id Command: show stp mst_config_id
Current MST Configuration Identification ----------------------------------------
Configuration Name : [RTKmstp ] Revision Level :0 MSTI ID Vid list ------- ----------- CIST 1-4094
MSTP Port Information ---------------------- Port Index : 23 , Hello Time: 2 /2 , Port STP disabled Restricted role : False , Restricted TCN : False External PathCost : Auto/200000 , Edge Port : False/No , P2P : Auto /Yes Port Forward BPDU : disabled BPDU Type : RSTP
Msti Designated Bridge Internal PathCost Prio Status Role ----- ------------------ ----------------- ---- ----------- ---------- 0 N/A 200000 128 Forwarding NonStp
MSTP Port Information ---------------------- Port Index : 24 , Hello Time: 2 /2 , Port STP disabled Restricted role : False , Restricted TCN : False External PathCost : Auto/200000 , Edge Port : False/No , P2P : Auto /Yes Port Forward BPDU : disabled BPDU Type : RSTP
Msti Designated Bridge Internal PathCost Prio Status Role ----- ------------------ ----------------- ---- ----------- ---------- 0 N/A 200000 128 Forwarding NonStp
MSTP Port Information ---------------------- Port Index : 25 , Hello Time: 2 /2 , Port STP enabled Restricted role : False , Restricted TCN : False External PathCost : Auto/20000 , 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 20000 128 Disabled Disabled
MSTP Port Information ---------------------- Port Index : 26 , Hello Time: 2 /2 , Port STP enabled Restricted role : False , Restricted TCN : False External PathCost : Auto/20000 , Edge Port : False/No , P2P : Auto /Yes Port Forward BPDU : enabled BPDU Type : STP
Msti Designated Bridge Internal PathCost Prio Status Role ----- ------------------ ----------------- ---- ----------- ---------- 0 8000/1CBDB98352E4 20000 128 Forwarding Root Самое интересное что в свичах 5 и 7 на портах между ними BPDU Type : STP Тоже самое между свичами 3 и 5, порты BPDU Type : STP В остальных свичах BPDU Type : RSTP Отсюда следующие вопрос: 1. Почему на портах BPDU Type : STP 2. Почему они постоянно перестраивают кольцо 3. Как на данном кольце правильно раздать приоритеты свичам. И нужны ли приоритеты портам (Цена трафика)
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