跨交换机同vlan ARP不通

2019-07-21 07:21:07 537 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

HCIA—代理ARP (路由式代理ARP+vlan内代理ARP+vlan间代理ARP) [理论+实验验证] ①如果ARP请求是从一个网络的主机发往同一网段却不在同一物理网络上的另一台主机，那么连接它们的具有代理ARP功能的设备就可以回答该请求。 ③对于ARP代理功能，有些厂商是默认打开的，有些厂商是默认关闭的。阅读详情

下面这种简单的情况跨交换机同vlan可以ping通

下面这个跨2个交换机就ping不通了, 左面ping右面 arp到Switch0没被广播丢弃了(仿真时看到的)

4个trunk端口设置都是一样的 trunk模式允许 vlan 10 20 30 通过



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