Administrace komentářů

Nemyslim, ze by byl problem v tom etherchannelu (minimalne ne v tom, ktery propojuje switche mezi sebou). Spis to vypada na ten problem s kompatabilitou mezi STP na linuxu a PVST na Catalystu (zkousel jsem i RPVST).

Prikladam STP pro VLAN 502 ve chvili kdy se komunikace cykli:

SW1 show spanning-tree vlan 502

VLAN0502
  Spanning tree enabled protocol rstp
  Root ID    Priority    20982
             Address     b4e9.b004.5000
             This bridge is the root
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

  Bridge ID  Priority    20982  (priority 20480 sys-id-ext 502)
             Address     b4e9.b004.5000
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
             Aging Time  300 sec

Interface           Role Sts Cost      Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Gi1/0/1             Desg FWD 4         128.1    P2p
Gi1/0/2             Desg FWD 4         128.2    P2p
Po1                 Desg FWD 3         128.224  P2p
Po2                 Desg FWD 3         128.232  P2p

SW2 show spanning-tree vlan 502

VLAN0502
  Spanning tree enabled protocol rstp
  Root ID    Priority    20982
             Address     b4e9.b004.5000
             Cost        3
             Port        224 (Port-channel1)
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

  Bridge ID  Priority    29174  (priority 28672 sys-id-ext 502)
             Address     04da.d2e9.2980
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
             Aging Time  300 sec

Interface           Role Sts Cost      Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Gi1/0/1             Altn BLK 4         128.1    P2p
Gi1/0/2             Desg FWD 4         128.2    P2p
Po1                 Root FWD 3         128.224  P2p
Po2                 Desg FWD 3         128.232  P2p

GW brctl showstp xenbr0

ibr0
 bridge id              8000.001018f5a2ec
 designated root        5001.b4e9b0045000
 root port                 2                    path cost                103
 max age                  20.00                 bridge max age            20.00
 hello time                2.00                 bridge hello time          2.00
 forward delay            15.00                 bridge forward delay      15.00
 ageing time             300.01
 hello timer               0.00                 tcn timer                  0.00
 topology change timer     0.00                 gc timer                 147.79
 flags


ibond0 (1)
 port id                8001                    state                forwarding
 designated root        5001.b4e9b0045000       path cost                100
 designated bridge      8000.001018f5a2ec       message age timer          0.00
 designated port        8001                    forward delay timer        0.00
 designated cost         103                    hold timer                 0.00
 flags                  CONFIG_PENDING

ibond1 (2)
 port id                8002                    state                forwarding
 designated root        5001.b4e9b0045000       path cost                100
 designated bridge      7001.04dad2e92980       message age timer         18.57
 designated port        80e8                    forward delay timer        0.00
 designated cost           3                    hold timer                 0.00
 flags

Host brctl showstp xenbr0

xenbr0
 bridge id              8000.bc305bf90d6c
 designated root        8000.bc305bf90d6c
 root port                 0                    path cost                  0
 max age                  20.00                 bridge max age            20.00
 hello time                2.00                 bridge hello time          2.00
 forward delay            15.00                 bridge forward delay      15.00
 ageing time             300.01
 hello timer               1.27                 tcn timer                  0.00
 topology change timer     0.00                 gc timer                   6.78
 flags


eth0.502 (1)
 port id                8001                    state                forwarding
 designated root        8000.bc305bf90d6c       path cost                  4
 designated bridge      8000.bc305bf90d6c       message age timer          0.00
 designated port        8001                    forward delay timer        0.00
 designated cost           0                    hold timer                 0.26
 flags

eth2.502 (2)
 port id                8002                    state                forwarding
 designated root        8000.bc305bf90d6c       path cost                  4
 designated bridge      8000.bc305bf90d6c       message age timer          0.00
 designated port        8002                    forward delay timer        0.00
 designated cost           0                    hold timer                 0.26
 flags

Jeste jsem prilozil schema aktualniho zapojeni, pro lepsi predstavu. Behem dneska jsem nahradil vsechny bridge na linuxech za bonding active-backup a momentalne to dela co potrebuju. Preklopeni po odpojeni portu trva 15s, coz je pomerne dlouho, ale nevim jestli by RSTP bylo rychlejsi?