К сожалению конфигурацию для полного кольца в данный момент реализовать нет возможности. Можно конечно по памяти, но...
Упростим задачу. Рассмотрим работу STP между A и C. A и С соеденины между собой через порты 7,8, оба - 802.1q trunk.
Конфиг для A:
Код:
# VLAN
...
create vlan vlan101 tag 101
config vlan vlan101 add tagged 7-8
config vlan vlan101 advertisement disable
create vlan vlan102 tag 102
config vlan vlan102 add untagged 7-8
config vlan vlan102 advertisement disable
...
# STP
config stp maxage 20 hellotime 2 forwarddelay 15 priority 32768 version rstp txholdcount 3 fbpdu enable
enable stp
config stp ports 1-6,9-26 cost auto priority 128 edge false p2p true state disable
config stp ports 7 cost auto priority 128 edge false p2p true state enable
config stp ports 8 cost auto priority 128 edge false p2p true state enable
Конфиг для C:Код:
...
spanning-tree mode rapid-pvst
spanning-tree extend system-id
spanning-tree vlan 101-102 priority 24576
interface FastEthernet0/7
switchport trunk encapsulation dot1q
switchport trunk native vlan 102
switchport trunk allowed vlan 101,102
switchport mode trunk
switchport nonegotiate
end
!
interface FastEthernet0/8
switchport trunk encapsulation dot1q
switchport trunk native vlan 102
switchport trunk allowed vlan 101,102
switchport mode trunk
switchport nonegotiate
end
при этом:
на С:Код:
A# show stp
Bridge Parameters Settings
STP Status : Enabled
Max Age : 20
Hello Time : 2
Forward Delay : 15
Priority : 32768
STP Version : RSTP
TX Hold Count : 3
Forwarding BPDU : Enabled
Bridge Current Status
Designated Root Bridge : 00-0D-88-D9-D0-80
Root Priority : 32768
Cost to Root : 0
Root Port : None
Last Topology Change : 2328sec
Topology Changes Count : 1
Protocol Specification : 3
Max Age : 20
Hello Time : 2
Forward Delay : 15
Hold Time : 3
#show stp ports
Command: show stp ports
Port Designated Bridge State Cost Pri Edge P2P Status Role
------ ------------------ ----- ---------- ---- ---- --- ---------- ----------
1 N/A No *200000 128 No Yes Forwarding NonStp
2 N/A No *200000 128 No Yes Forwarding NonStp
3 N/A No *200000 128 No Yes Forwarding NonStp
4 N/A No *200000 128 No Yes Disabled Disabled
5 N/A No *200000 128 No Yes Disabled Disabled
6 N/A No *200000 128 No Yes Disabled Disabled
7 8000/000D88D9D080 Yes *200000 128 No Yes Forwarding Designated
8 8000/000D88D9D080 Yes *200000 128 No Yes Forwarding Designated
9 N/A No *200000 128 No Yes Disabled Disabled
10 N/A No *200000 128 No Yes Disabled Disabled
...
на С:Код:
C#show spanning-tree vlan 101
VLAN0101
Spanning tree enabled protocol rstp
Root ID Priority 24677
Address 001c.b164.a380
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 24677 (priority 24576 sys-id-ext 101)
Address 001c.b164.a380
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Fa0/7 Desg FWD 19 128.9 P2p
Fa0/8 Back BLK 19 128.10 P2p
C#show spanning-tree vlan 102
VLAN0102
Spanning tree enabled protocol rstp
Root ID Priority 24678
Address 001c.b164.a380
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 24678 (priority 24576 sys-id-ext 102)
Address 001c.b164.a380
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Fa0/7 Desg FWD 19 128.9 P2p
Fa0/8 Back BLK 19 128.10 P2p
Вход
Регистрация
FAQ
Поиск
