WB1 RIP 4.13 ~ 4.15 過濾路由的一些方法

4.13 RIPv2 Filtering with Offset Lists

• Configure an offset-list on SW1 so that SW3 does not install a route to VLAN 5.

SW1:
router rip
offset-list 1 out 16 Vlan79
!
access-list 1 permit 155.1.5.0

4.14 RIPv2 Filtering with Administrative Distance

• Configure administrative distance filtering on R5 so that devices within the network cannot reach R4’s Loopback 0 network.

R5:
router rip
distance 255 0.0.0.0 255.255.255.255 1
!
dantance 255 0.0.0.0 255.255.255.255 1表示任何路由器的更新介面，所送出的access-list 1都變成distance 255
!
access-list 1 permit 150.1.4.0
!

4.15 RIPv2 Filtering with Per Neighbor AD

• Configure administrative distance filtering on SW1 so that traffic destined for R3’s Loopback 0 network is sent towards R6.

SW1:
router rip
distance 255 155.1.37.3 0.0.0.0 2
!
distance 255 155.1.37.3 0.0.0.0 2表示當路由器之更新路由表介面恰好為155.1.37.3時，所送出的access-list 2路由150.1.3.0變成distance 255
!
access-list 2 permit 150.1.3.0