Simple EIRGP Load Balancing

 

Experiment topology:

Lab environment: GNS3 and C3640

 

Purpose: To verify whether the auto-load balancing function is implemented by the kernel.

 

Next we will start the experiment

1. Configure an IP address for R1

 

R1> en

R1 # conf

Starting ing from terminal, memory, or network [terminal]?

Enter configuration commands, one per line. End with CNTL/Z.

R1 (config) # int lo0

R1 (config-if) # ip add 1.1.

* Mar 1 00:02:27. 247: % LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback0, changed state to up

R1 (config-if) # ip add 1.1.1.1 255.255.255.0

R1 (config-if) # no shut

R1 (config-if) # int fa0/0

R1 (config-if) # ip add 192.168.20.1 255.255.255.0

R1 (config-if) # no shut

R1 (config-if) # int s1

* Mar 1 00:02:57. 815: % LINK-3-UPDOWN: Interface FastEthernet0/0, changed state to up

* Mar 1 00:02:58. 815: % LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up

R1 (config-if) # int s1/0

R1 (config-if) # ip add 192.168.10.1 255.255.255.0

R1 (config-if) # no shut

R1 (config-if )#

 

 

2. Configure IP addresses for R2

 

R2> en

R2 # conf

Starting ing from terminal, memory, or network [terminal]?

Enter configuration commands, one per line. End with CNTL/Z.

R2 (config) # int lo0

R2 (config-if) # ip add 2.

* Mar 1 00:04:48. 611: % LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback0, changed state to up

R2 (config-if) # ip add 2.2.2.2 255.255.255.0

R2 (config-if) # no shut

R2 (config-if) # int fa0/0

R2 (config-if) # ip add 192.168.20.2 255.255.255.0

R2 (config-if) # no shut

R2 (config-if) # int s

* Mar 1 00:05:13. 451: % LINK-3-UPDOWN: Interface FastEthernet0/0, changed state to up

* Mar 1 00:05:14. 451: % LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up

R2 (config-if) # int s1/0

R2 (config-if) # ip add 192.168.10.2 255.255.255.0

R2 (config-if) # no shut

R2 (config-if )#

 

3. Configure r1's VPN gateway

R1 (config) # router

R1 (config) # router ei

R1 (config) # router VPN 100

R1 (config-router) # net

R1 (config-router) # network 1.1.1.0 255.255.0

R1 (config-router) # net

R1 (config-router) # network 192.168.10.0

R1 (config-router) # net

R1 (config-router) # network 192.168.20.0

R1 (config-router) # no au

R1 (config-router) # no auto-summary

R1 (config-router )#

 

 

 

4. Configure R2.

Enter configuration commands, one per line. End with CNTL/Z.

R2 (config) # router ei

R2 (config) # router VPN 100

R2 (config-router) # net

R2 (config-router) # network 2.2.2.0 255.255.255.0

R2 (config-router) # net

R2 (config-router) # network 192.168.10.0

R2 (config-router) # net

R2 (config-router) # network

* Mar 1 00:08:37. 311: % DUAL-5-NBRCHANGE: IP-EIGRP (0) 100: Neighbor 192.168.10.1 (Serial1/0) is up: new adjacency

R2 (config-router) # network 192.168.20.0

R2 (config-router) # no

R2 (config-router) # no

* Mar 1 00:08:46. 511: % DUAL-5-NBRCHANGE: IP-EIGRP (0) 100: Neighbor 192.168.20.1 (FastEthernet0/0) is up: new adjacency

R2 (config-router) # no au

R2 (config-router) # no auto-summary

R2 (config-router )#

 

 

On R1, pingR2

R1 # ping 2.2.2.2

 

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 2.2.2.2, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 20/59/116 MS

 

On R1

IP-EIGRP Topology Table for AS (100)/ID (1.1.1.1)

 

Codes: P-Passive, A-Active, U-Update, Q-Query, R-Reply,

R-reply Status, s-sia Status

 

P 1.1.1.0/24, 1 successors, FD is 128256

Via Connected, Loopback0

P 2.2.2.0/24, 1 successors, FD is 156160

Through 192.168.20.2 (156160/128256), FastEthernet0/0

Via 192.168.10.2 (2297856/128256), Serial1/0

P 192.168.10.0/24, 1 successors, FD is 2169856

Via Connected, Serial1/0

P 192.168.20.0/24, 1 successors, FD is 28160

Via Connected, FastEthernet0/0

It can be seen that 2.2.2.0 is reached in R2.

The successor route is via 192.168.20.2 (156160/128256), FastEthernet0/0

A reliable successor is

P 2.2.2.0/24, 1 successors, FD is 156160

Via 192.168.10.2 (2297856/128256), Serial1/0

The experiment is over!

By the way, it is necessary to establish a neighbor:

 

1. Received hello or ACK

 

2. Matched AD numbers

 

3. Have the same measurement (K value)

 

 

 

This article is from the "IT-dream-chase" blog