>
>1.Резервирование,балансировка работают передают оба интерфейса
>2.При потере 1 канала скорость на канальном порту станет в половину меньше
>
>3.Все работает на L-2 уровне

Заманчиво. Но возникает вопрос: момент перехода будет определяться только по падению/поднятию линка на интерфейсе или как-то еще? (какие-то служебные пакеты типа keepalive или BPDU в spanning tree)

>у вас STP работает корректно?
>что показывает sh spanning-tree для каждого коммутатора при двух линках? при одном
>основно, одном резервном?
>Как правильно вам сказали - не все радиолинки одинаково полезны.

spanning-tree до обрыва
Рутовый каталист ABK:
---------
Cat_ABK#sh spanning-tree

VLAN0001
  Spanning tree enabled protocol rstp
  Root ID    Priority    24577
             Address     001c.b048.cb00
             This bridge is the root
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

  Bridge ID  Priority    24577  (priority 24576 sys-id-ext 1)
             Address     001c.b048.cb00
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
             Aging Time 300

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Fa0/1            Desg FWD 19        128.1    Shr
Fa0/2            Desg FWD 19        128.2    Shr
Fa0/11           Desg FWD 19        128.11   P2p
Fa0/13           Desg FWD 19        128.13   P2p
Fa0/23           Desg FWD 19        128.23   P2p
Fa0/24           Desg FWD 19        128.24   P2p

VLAN0002
  Spanning tree enabled protocol rstp
  Root ID    Priority    32770
             Address     001c.b048.cb00
             This bridge is the root
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

  Bridge ID  Priority    32770  (priority 32768 sys-id-ext 2)
             Address     001c.b048.cb00
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
             Aging Time 300

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Fa0/13           Desg FWD 19        128.13   P2p
Fa0/23           Desg FWD 19        128.23   P2p
Fa0/24           Desg FWD 19        128.24   P2p

VLAN0003
  Spanning tree enabled protocol rstp
  Root ID    Priority    32771
             Address     001c.b048.cb00
             This bridge is the root
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

  Bridge ID  Priority    32771  (priority 32768 sys-id-ext 3)
             Address     001c.b048.cb00
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
             Aging Time 300

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Fa0/13           Desg FWD 19        128.13   P2p
Fa0/23           Desg FWD 19        128.23   P2p
Fa0/24           Desg FWD 19        128.24   P2p

VLAN0004
  Spanning tree enabled protocol rstp
  Root ID    Priority    32772
             Address     001c.b048.cb00
             This bridge is the root
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

  Bridge ID  Priority    32772  (priority 32768 sys-id-ext 4)
             Address     001c.b048.cb00
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
             Aging Time 300

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Fa0/13           Desg FWD 19        128.13   P2p
Fa0/23           Desg FWD 19        128.23   P2p
Fa0/24           Desg FWD 19        128.24   P2p

VLAN0005
  Spanning tree enabled protocol rstp
  Root ID    Priority    32773
             Address     001c.b048.cb00
             This bridge is the root
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

  Bridge ID  Priority    32773  (priority 32768 sys-id-ext 5)
             Address     001c.b048.cb00
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
             Aging Time 300

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Fa0/13           Desg FWD 19        128.13   P2p
Fa0/23           Desg FWD 19        128.23   P2p
Fa0/24           Desg FWD 19        128.24   P2p
--More--
---------

Не рутовый каталист PSP:
---------
CatPSP581#sh spanning-tree

VLAN0001
  Spanning tree enabled protocol rstp
  Root ID    Priority    24577
             Address     001c.b048.cb00
             Cost        19
             Port        1 (FastEthernet0/1)
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

  Bridge ID  Priority    32769  (priority 32768 sys-id-ext 1)
             Address     001b.54cc.4280
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
             Aging Time 300

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Fa0/1            Root FWD 19        128.1    Shr
Fa0/2            Altn BLK 19        128.2    Shr
Fa0/3            Desg FWD 19        128.3    Shr Peer(STP)
Fa0/23           Desg FWD 19        128.23   P2p
Fa0/24           Desg FWD 19        128.24   P2p

VLAN0002
  Spanning tree enabled protocol rstp
  Root ID    Priority    32770
             Address     001b.54cc.4280
             This bridge is the root
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

  Bridge ID  Priority    32770  (priority 32768 sys-id-ext 2)
             Address     001b.54cc.4280
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
             Aging Time 300

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Fa0/3            Desg FWD 19        128.3    Shr
Fa0/24           Desg FWD 19        128.24   P2p

VLAN0003
  Spanning tree enabled protocol rstp
  Root ID    Priority    32771
             Address     001b.54cc.4280
             This bridge is the root
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

  Bridge ID  Priority    32771  (priority 32768 sys-id-ext 3)
             Address     001b.54cc.4280
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
             Aging Time 300

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Fa0/3            Desg FWD 19        128.3    Shr
Fa0/24           Desg FWD 19        128.24   P2p

VLAN0004
  Spanning tree enabled protocol rstp
  Root ID    Priority    32772
             Address     001b.54cc.4280
             This bridge is the root
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

  Bridge ID  Priority    32772  (priority 32768 sys-id-ext 4)
             Address     001b.54cc.4280
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
             Aging Time 300

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Fa0/3            Desg FWD 19        128.3    Shr
Fa0/24           Desg FWD 19        128.24   P2p

VLAN0005
  Spanning tree enabled protocol rstp
  Root ID    Priority    32773
             Address     001b.54cc.4280
             This bridge is the root
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

  Bridge ID  Priority    32773  (priority 32768 sys-id-ext 5)
             Address     001b.54cc.4280
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
             Aging Time 300

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Fa0/3            Desg FWD 19        128.3    Shr
Fa0/24           Desg FWD 19        128.24   P2p

VLAN0006
  Spanning tree enabled protocol rstp
  Root ID    Priority    32774
             Address     001b.54cc.4280
             This bridge is the root
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

  Bridge ID  Priority    32774  (priority 32768 sys-id-ext 6)
             Address     001b.54cc.4280
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
             Aging Time 300

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Fa0/3            Desg FWD 19        128.3    Shr
Fa0/24           Desg FWD 19        128.24   P2p

VLAN0007
  Spanning tree enabled protocol rstp
  Root ID    Priority    32775
             Address     001b.54cc.4280
             This bridge is the root
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

  Bridge ID  Priority    32775  (priority 32768 sys-id-ext 7)
             Address     001b.54cc.4280
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
             Aging Time 300

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Fa0/3            Desg FWD 19        128.3    Shr
Fa0/24           Desg FWD 19        128.24   P2p

VLAN0008
  Spanning tree enabled protocol rstp
  Root ID    Priority    32776
             Address     001b.54cc.4280
             This bridge is the root
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

  Bridge ID  Priority    32776  (priority 32768 sys-id-ext 8)
             Address     001b.54cc.4280
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
             Aging Time 300

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Fa0/3            Desg FWD 19        128.3    Shr
Fa0/24           Desg FWD 19        128.24   P2p

--More--
---------

spanning-tree после обрыва основного линка:
ABK:
---------
Cat_ABK#sh spanning-tree

VLAN0001
  Spanning tree enabled protocol rstp
  Root ID    Priority    24577
             Address     001c.b048.cb00
             This bridge is the root
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

  Bridge ID  Priority    24577  (priority 24576 sys-id-ext 1)
             Address     001c.b048.cb00
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
             Aging Time 300

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Fa0/2            Desg FWD 19        128.2    Shr
Fa0/11           Desg FWD 19        128.11   P2p
Fa0/13           Desg FWD 19        128.13   P2p
Fa0/23           Desg FWD 19        128.23   P2p
Fa0/24           Desg FWD 19        128.24   P2p

VLAN0002
  Spanning tree enabled protocol rstp
  Root ID    Priority    32770
             Address     001c.b048.cb00
             This bridge is the root
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

  Bridge ID  Priority    32770  (priority 32768 sys-id-ext 2)
             Address     001c.b048.cb00
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
             Aging Time 300

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Fa0/13           Desg FWD 19        128.13   P2p
Fa0/23           Desg FWD 19        128.23   P2p
Fa0/24           Desg FWD 19        128.24   P2p

VLAN0003
  Spanning tree enabled protocol rstp
  Root ID    Priority    32771
             Address     001c.b048.cb00
             This bridge is the root
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

  Bridge ID  Priority    32771  (priority 32768 sys-id-ext 3)
             Address     001c.b048.cb00
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
             Aging Time 300

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Fa0/13           Desg FWD 19        128.13   P2p
Fa0/23           Desg FWD 19        128.23   P2p
Fa0/24           Desg FWD 19        128.24   P2p

VLAN0004
  Spanning tree enabled protocol rstp
  Root ID    Priority    32772
             Address     001c.b048.cb00
             This bridge is the root
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

  Bridge ID  Priority    32772  (priority 32768 sys-id-ext 4)
             Address     001c.b048.cb00
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
             Aging Time 300

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Fa0/13           Desg FWD 19        128.13   P2p
Fa0/23           Desg FWD 19        128.23   P2p
Fa0/24           Desg FWD 19        128.24   P2p
--More--
---------

PSP:
---------
CatPSP581#sh spa

VLAN0001
  Spanning tree enabled protocol rstp
  Root ID    Priority    24577
             Address     001c.b048.cb00
             Cost        19
             Port        2 (FastEthernet0/2)
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

  Bridge ID  Priority    32769  (priority 32768 sys-id-ext 1)
             Address     001b.54cc.4280
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
             Aging Time 300

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Fa0/1            Desg FWD 19        128.1    Shr
Fa0/2            Root FWD 19        128.2    Shr
Fa0/3            Desg FWD 19        128.3    Shr Peer(STP)
Fa0/23           Desg FWD 19        128.23   P2p
Fa0/24           Desg FWD 19        128.24   P2p

VLAN0002
  Spanning tree enabled protocol rstp
  Root ID    Priority    32770
             Address     001b.54cc.4280
             This bridge is the root
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

  Bridge ID  Priority    32770  (priority 32768 sys-id-ext 2)
             Address     001b.54cc.4280
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
             Aging Time 300

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Fa0/3            Desg FWD 19        128.3    Shr
Fa0/24           Desg FWD 19        128.24   P2p

VLAN0003
  Spanning tree enabled protocol rstp
  Root ID    Priority    32771
             Address     001b.54cc.4280
             This bridge is the root
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

  Bridge ID  Priority    32771  (priority 32768 sys-id-ext 3)
             Address     001b.54cc.4280
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
             Aging Time 300

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Fa0/3            Desg FWD 19        128.3    Shr
Fa0/24           Desg FWD 19        128.24   P2p

VLAN0004
  Spanning tree enabled protocol rstp
  Root ID    Priority    32772
             Address     001b.54cc.4280
             This bridge is the root
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

  Bridge ID  Priority    32772  (priority 32768 sys-id-ext 4)
             Address     001b.54cc.4280
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
             Aging Time 300

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Fa0/3            Desg FWD 19        128.3    Shr
Fa0/24           Desg FWD 19        128.24   P2p

--More--
---------

На циске, включенной в рутовый каталист два последних нейбора не поднимаются:
abk#sh ip os nei

Neighbor ID     Pri   State           Dead Time   Address         Interface
192.168.17.1      1   FULL/BDR        00:00:33    172.28.192.15   FastEthernet0/0.10
192.168.17.4      1   FULL/DROTHER    00:00:35    172.28.192.16   FastEthernet0/0.10
192.168.17.3      1   DOWN/DROTHER       -        10.86.253.1     FastEthernet0/0.1
192.168.17.6      1   DOWN/DROTHER       -        10.86.253.3     FastEthernet0/0.1

Дальний маршрутизатор не доступен, хотя OSPF-пакеты на обоих концах бегают (видно по deb ip ospf packet)
MAC-адреса друг друга маршрутизаторы видят.
Вот на ближнем:
abk#sh arp | i 10.86.253.3
Internet  10.86.253.3            29   001b.54dd.2728  ARPA   FastEthernet0/0.1
а это на дальнем:
psp#sh arp | i 10.86.253.4
Internet  10.86.253.4            56   001b.d470.0908  ARPA   FastEthernet0/0

т.е. все хорошо, но ничего не работает.
Поможите, кто чем может!