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Question 385 - 300-410 discussion

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LAB SIMULATION

Configure individual VRFs for each customer according to the topology to achieve these goals :

R1

R2

SW1

SW2

SW3


A.

See the solution below in

Answers
A.

See the solution below in

Suggested answer: A

Explanation:

Solution:

Use cu-red under interfaces facing SW1 & SW3:

On R1:

interface Ethernet0/0 ip vrf forwarding cu-red

ip address 192.168.1.254 255.255.255.0

Check reachability to SW1:

R1#ping vrf cu-red 192.168.1.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.2.1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms

On R2:

interface Ethernet0/0 ip vrf forwarding cu-red ip address 192.168.2.254 255.255.255.0

Check reachability to SW3:

R2#ping vrf cu-red 192.168.2.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds:

!!!!!

Use vrf cu-green for SW2 & SW4:

On R1:

interface Ethernet0/1 ip vrf forwarding cu-green

ip address 192.168.20.254 255.255.255.0

Test reachability to SW2:

R1#ping vrf cu-green 192.168.20.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.22.1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms

On R2:

interface Ethernet0/1 ip vrf forwarding cu-green

ip address 192.168.22.254 255.255.255.0

Test reachability to SW4:

R2#ping vrf cu-green 192.168.22.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.20.1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms

On R1:

interface Ethernet0/2.100 mpls ip

!i nterface Ethernet0/2.200 mpls ip

!

Configure BGP:

router bgp 65000 neighbor 10.10.10.2 remote-as 65000 neighbor 10.10.20.2 remote-as 65000

! address-family vpnv4 neighbor 10.10.10.2 activate neighbor 10.10.20.2 activate exit-address-family

! address-family ipv4 vrf cu-green redistribute connected exit-address-family

! address-family ipv4 vrf cu-red redistribute connected exit-address-family

!

R1(config)#ip vrf cu-red

R1(config-vrf)#route-target both 65000:100

!

R1(config)#ip vrf cu-green

R1(config-vrf)#route-target both 65000:200

On R2: interface Ethernet0/2.100 mpls ip

!i nterface Ethernet0/2.200 mpls ip

! router bgp 65000 neighbor 10.10.10.1 remote-as 65000 neighbor 10.10.20.1 remote-as 65000

! address-family vpnv4 neighbor 10.10.10.1 activate neighbor 10.10.20.1 activate exit-address-family

! address-family ipv4 vrf cu-green redistribute connected exit-address-family

! address-family ipv4 vrf cu-red redistribute connected exit-address-family

R2(config)#ip vrf cu-red

R2(config-vrf)#route-target both 65000:100

!

R2(config)#ip vrf cu-green

R2(config-vrf)#route-target both 65000:200

Verification:

From SW1 to SW3:

SW1#ping 192.168.1.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms

But canít Reach SW2 or SW4 in VRF cu-green:

SW1#ping 192.168.22.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.22.1, timeout is 2 seconds:

U.U.U

Success rate is 0 percent (0/5)

SW1#ping 192.168.20.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.20.1, timeout is 2 seconds:

U.U.U

Success rate is 0 percent (0/5)

Same Test for SW2:

From SW2 to SW4:

SW2#ping 192.168.20.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.20.1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms

But canít Reach SW3 or SW1 in VRF cu-red:

SW2#ping 192.168.1.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds:

U.U.U

Success rate is 0 percent (0/5)

SW2#ping 192.168.2.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.2.1, timeout is 2 seconds:

U.U.U

Success rate is 0 percent (0/5)

Both R1 & R2 has separate tables for VRFs cu-red and cu-green.

asked 07/10/2024
Michael Aragon
32 questions
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