VLAN间路由
1.单臂路由实现VLAN间路由
sw1：
vlan batch 2 to 3
interface GigabitEthernet0/0/1
port link-type access
port default vlan 2
interface GigabitEthernet0/0/2
port link-type access
port default vlan 3
interface GigabitEthernet0/0/3
port link-type trunk
port trunk allow-pass vlan 2 to 3
AR1：
interface GigabitEthernet0/0/0.2
dot1q termination vid 2
ip address 192.168.2.1 255.255.255.0
arp broadcast enable
interface GigabitEthernet0/0/0.3
dot1q termination vid 3
ip address 192.168.3.1 255.255.255.0
arp broadcast enable
注释：arp broadcast enable命令用来使能子接口的ARP广播功能。缺省情况下，子接口没有使能ARP广播功能。子接口不能转发广播报文，在收到广播报文后它们直接把该报文丢弃。为了允许子接口能转发广播报文，可以通过在子接口上执行此命令。
[AR1]display ip interface brief
*down: administratively down
^down: standby
(l): loopback
(s): spoofing
The number of interface that is UP in Physical is 4
The number of interface that is DOWN in Physical is 2
The number of interface that is UP in Protocol is 3
The number of interface that is DOWN in Protocol is 3
Interface IP Address/Mask Physical Protocol
GigabitEthernet0/0/0 unassigned up down
GigabitEthernet0/0/0.2 192.168.2.1/24 up up
GigabitEthernet0/0/0.3 192.168.3.1/24 up up
GigabitEthernet0/0/1 unassigned down down
GigabitEthernet0/0/2 unassigned down down
NULL0 unassigned up up(s)
PC1可以ping通PC2
PC>ping 192.168.3.2
Ping 192.168.3.2: 32 data bytes, Press Ctrl_C to break
Request timeout!
From 192.168.3.2: bytes=32 seq=2 ttl=127 time=78 ms
From 192.168.3.2: bytes=32 seq=3 ttl=127 time=94 ms
From 192.168.3.2: bytes=32 seq=4 ttl=127 time=93 ms
From 192.168.3.2: bytes=32 seq=5 ttl=127 time=125 ms
--- 192.168.3.2 ping statistics ---
5 packet(s) transmitted
4 packet(s) received
20.00% packet loss
round-trip min/avg/max = 0/97/125 ms
此方法生产环境已经用得不多了
2.三层交换机实现VLAN间路由
sw1：
vlan batch 2 to 3
interface GigabitEthernet0/0/1
port link-type access
port default vlan 2
interface GigabitEthernet0/0/2
port link-type access
port default vlan 3
interface Vlanif2
ip address 192.168.2.1 255.255.255.0
#
interface Vlanif3
ip address 192.168.3.1 255.255.255.0
PC1可以ping通PC2
PC>ping 192.168.3.2
Ping 192.168.3.2: 32 data bytes, Press Ctrl_C to break
From 192.168.3.2: bytes=32 seq=1 ttl=127 time=94 ms
From 192.168.3.2: bytes=32 seq=2 ttl=127 time=47 ms
From 192.168.3.2: bytes=32 seq=3 ttl=127 time=31 ms
From 192.168.3.2: bytes=32 seq=4 ttl=127 time=47 ms
From 192.168.3.2: bytes=32 seq=5 ttl=127 time=31 ms
--- 192.168.3.2 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 31/50/94 ms
该案例经常在生产环境中使用
查看命令：
dis ip int b
dis ip route
