关于MST的实践

a2247346717

正在做MSTP的练习
出现了几个问题
1.  2台3层交换都配置了
int vlan 10
ip add 192.168.10.254 255.255.255.0
出现：
*Apr 12 18:46:39.971: %IP-4-DUPADDR: Duplicate address 192.168.10.254 on Vlan20, sourced by aabb.cc80.0200


2.  mstp配置如下，
SW2(config-if-range)#do show run  | s mst
spanning-tree mode mst
spanning-tree mst configuration
name 123
instance 1 vlan 10, 20
instance 2 vlan 30, 40
spanning-tree mst 1 priority 28672
spanning-tree mst 2 priority 24576


讲SW1端口down掉，PC接近半分钟才回复，sw2端口down掉，却没有影响，这结果正常吗

a2247346717

具体配置：
三层交换：
enable       
configure terminal
hostname SW1

vtp domain ccie
vtp password 123
vtp mode server
vtp pruning
ip routing
vlan 10
vlan 20
vlan 20
vlan 30
vlan 30
vlan 40
vlan 40

int range e0/0-3,e1/0-3,e2/0-3,e3/0-3
switchport trunk encapsulation dot1q
switchport mode trunk
ex
int vlan 10
ip add 192.168.10.254 255.255.255.0
no shut
int vlan 20
ip add 192.168.20.254 255.255.255.0
no shut
int vlan 30
ip add 192.168.30.254 255.255.255.0
no shut
int vlan 40
ip add 192.168.40.254 255.255.255.0
no shut

spanning-tree mode mst
spanning-tree mst configuration
name 123
instance 1 vlan 10,20
instance 2 vlan 30,40
spanning-tree mst 1 root primary
spanning-tree mst 2 root secondary

ip dhcp pool 10
netw 192.168.10.0 255.255.255.0
default-router 192.168.10.254
ex
ip dhcp pool 20
netw 192.168.20.0 255.255.255.0
default-router 192.168.20.254
ex
ip dhcp pool 30
netw 192.168.30.0 255.255.255.0
default-router 192.168.30.254
ex
ip dhcp pool 40
netw 192.168.40.0 255.255.255.0
default-router 192.168.40.254
ex

二层交换：

enable       
configure terminal
vtp domain ccie
vtp password 123
vtp mode client
spanning-tree portfast default

int range e0/0-3
sw mo ac
sw ac vlan 10

PC：

en
conf t
no ip routing
int e0/0
no shut
ip add dhcp