20201223 cisco 單臂路由
課堂資料
單臂路由器：是指與網路有單一物理或邏輯連接的路由器。
它通常用於在本地連接的主機之間轉發獨立邏輯路由域上的流量，或者方便路由表的管理、分發和中繼。
課堂練習
單臂路由
int e0/0no shutint e0/0.10encapsulation dot1Q 10ip add 192.168.10.254 255.255.255.0no shutint e0/0.20encapsulation dot1Q 20ip add 192.168.20.254 255.255.255.0no shut
do sh run
int e0/1switchport mode accessswitchport access vlan 10int e0/2switchport mode accessswitchport access vlan 20do sh vlan brief
實戰練習：VRF
int e0/0ip addr 192.168.1.1 255.255.255.0no shutrouter ospf 1net 192.168.1.0 0.0.0.255 area 0
ping 192.168.2.1int e0/0ip addr 192.168.2.1 255.255.255.0no shutrouter ospf 1net 192.168.2.0 0.0.0.255 area 0
int e0/0ip addr 192.168.3.1 255.255.255.0no shutrouter ospf 1net 192.168.3.0 0.0.0.255 area 0
int e0/0ip addr 192.168.4.1 255.255.255.0no shutrouter ospf 1net 192.168.4.0 0.0.0.255 area 0
ip vrf Upperip vrf Lowerint e0/0ip vrf forwarding Upperip addr 192.168.1.2 255.255.255.0no shutint e0/1ip vrf forwarding Lowerip addr 192.168.3.2 255.255.255.0no shutint e0/2no shutint e0/2.10ip vrf for Upperencapsulation dot1Q 10ip addr 56.1.1.1 255.255.255.0int e0/2.20ip vrf for Lowerencapsulation dot1Q 20ip addr 56.3.3.3 255.255.255.0do sh ip vrfdo sh ip route vrf Upper 
do sh ip route vrf Lowerrouter ospf 1 vrf Uppernet 192.168.1.0 0.0.0.255 area 0net 56.1.1.0 0.0.0.255 area 0router ospf 2 vrf Lowernet 192.168.3.0 0.0.0.255 area 0net 56.3.3.0 0.0.0.255 area 0
ip vrf Upperip vrf Lowerint e0/0ip vrf forwarding Upperip addr 192.168.2.2 255.255.255.0no shutint e0/1ip vrf forwarding Lowerip addr 192.168.4.2 255.255.255.0no shutint e0/2no shutint e0/2.10ip vrf for Upperencapsulation dot1Q 10ip addr 56.1.1.2 255.255.255.0int e0/2.20ip vrf for Lowerencapsulation dot1Q 20ip addr 56.3.3.4 255.255.255.0do sh ip vrfdo sh ip route vrf Upper 
do sh ip route vrf Lowerrouter ospf 1 vrf Uppernet 192.168.2.0 0.0.0.255 area 0net 56.1.1.0 0.0.0.255 area 0router ospf 2 vrf Lowernet 192.168.4.0 0.0.0.255 area 0net 56.3.3.0 0.0.0.255 area 0
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