下面這種簡單的情況 跨交換機 同vlan可以ping通
下面這個跨2個交換機 就ping不通了, 左面ping右面 arp到Switch0沒被廣播丟棄了(仿真時看到的)
4個trunk埠設定都是一樣的 trunk模式 允許 vlan 10 20 30 通過
Switch#show interfaces GigabitEthernet 0/1 switchport
Name: Gig0/1
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Voice VLAN: none
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk private VLANs: none
Operational private-vlan: none
Trunking VLANs Enabled: 10,20,30
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL
Protected: false
uj5u.com熱心網友回復：
6666666uj5u.com熱心網友回復：
二層通訊不涉及arp，還是查配置吧，應該是配置問題uj5u.com熱心網友回復：
Switch 0的兩個埠呢？uj5u.com熱心網友回復：
都是同樣的trunk設定
uj5u.com熱心網友回復：
switch 0 的配置帖上來uj5u.com熱心網友回復：
ping和arp不是一回事，ping是icmp哦！ “左面ping右面 arp到Switch0沒被廣播丟棄了”這句話的意思不是很明白uj5u.com熱心網友回復：
=================SWITCH 0
interface GigabitEthernet0/1
switchport trunk native vlan 99
switchport trunk allowed vlan 10,20,30,99
switchport mode trunk
!
interface GigabitEthernet0/2
switchport trunk native vlan 99
switchport trunk allowed vlan 10,20,30,99
switchport mode trunk
=================SWITCH 1
interface FastEthernet0/1
switchport access vlan 10
switchport mode access
!
interface FastEthernet0/2
switchport access vlan 20
switchport mode access
!
interface FastEthernet0/3
switchport access vlan 30
switchport mode access
!
interface GigabitEthernet0/1
switchport trunk native vlan 99
switchport trunk allowed vlan 10,20,30,99
switchport mode trunk
=================SWITCH 2
interface FastEthernet0/1
switchport access vlan 10
switchport mode access
!
interface FastEthernet0/2
switchport access vlan 20
switchport mode access
!
interface FastEthernet0/3
switchport access vlan 30
switchport mode access
!
interface GigabitEthernet0/1
switchport trunk native vlan 99
switchport trunk allowed vlan 10,20,30,99
switchport mode trunk
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標籤：交換及路由技術
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