Category: Path Control

BGP: Path selection lab

The lab is from my friend, Andrey, you can find the lab objective here: http://eccentric.mae.cornell.edu/~andrey/labs/BGP%20Dual-connected%20AS%20with%20OSPF.pdf R1: 1841-1 R2: 2651-1 R3: 2651-2 R4: 1841-2 R5: 3825-1 Subnet at segment between R1 and R2: 192.168.1.0/24 Subnet at segment between R2 and R3: 192.168.2.0/24 Subnet at segment between R3 and R4: 192.168.3.0/24 subnet between R1 and R5: 100.10.10.0/24 … Continue reading BGP: Path selection lab →

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PBR: Force guest vlan to the desired path

This diagram is the same as the previous diagram in my post about VRF-lite. Another method is to use PBR to control traffic. Create access list access-list 1 permit 10.100.20.0 0.0.0.255 Create route-map route-map guest-redirect permit 10 match ip address 1 set ip next-hop 192.168.20.2 Or route-map guest-redirect permit 10 match ip address 1 set … Continue reading PBR: Force guest vlan to the desired path →

VRF-Lite: Applying VRF-lite to segregate different traffic for different destination

This configuration is done only on router (RXC). The objective is to segregate the traffic between two vlans, for vlan 10 the traffic will go towards Production internet and vlan 20 will go towards Guest internet. Virtual routing and forwarding (VRF) is very similar to vlan, except VRF is for layer 3. The two traffics … Continue reading VRF-Lite: Applying VRF-lite to segregate different traffic for different destination →

Route Filtering: EIGRP and RIP mixed protocol lab 1.2

Objective: Configure a route filter at A that will only allow subnets 172.16.2.0/24, 172.16.8.0/24 and 172.16.9.0/24 to be advertised into RIP domain. D#sh ip route rip 172.16.0.0/24 is subnetted, 13 subnets R       172.16.253.0/24 is possibly down, routing via 172.16.252.1, FastEthernet0/0 R       172.16.254.0/24 is possibly down, routing via 172.16.252.1, FastEthernet0/0 R       172.16.251.0/24 is possibly down, routing … Continue reading Route Filtering: EIGRP and RIP mixed protocol lab 1.2 →

Route filtering: EIGRP and RIP mixed protocol lab.

Objective: Configure a route filter at A (R1) that will prevent D (R4) from learning about subnet 172.16.10.0/24 D#sh ip route 172.16.0.0/24 is subnetted, 14 subnets C       172.16.252.0 is directly connected, FastEthernet0/0 R       172.16.253.0 [120/1] via 172.16.252.1, 00:00:13, FastEthernet0/0 R       172.16.254.0 [120/1] via 172.16.252.1, 00:00:13, FastEthernet0/0 R       172.16.251.0 [120/1] via 172.16.252.1, 00:00:13, FastEthernet0/0 R       172.16.8.0 … Continue reading Route filtering: EIGRP and RIP mixed protocol lab. →

PBR: Configuring policy-based routing using route-map and ip sla monitor

I am using two routers to emulate client 1 and 2. Client1#sh run | s int interface FastEthernet0/0 ip address 192.168.1.10 255.255.255.0 no ip route-cache duplex auto speed auto Client1#sh run | i no ip no ip routing no ip cef no ip domain lookup Client2#sh run | i no ip no ip routing no … Continue reading PBR: Configuring policy-based routing using route-map and ip sla monitor →