Practice lab Cisco CCNA R&S Serial Multilink and EIGRP  Done on GNS3

It is recommended to GNS3 than pcket Tracer PP multilink.

Step 1 Configuring multilink on router R1
R1(config)#interface multilink 13
R1(config-if)#ip address 192.168.16.2 255.255.255.252
R1(config-if)#ppp multilink
R1(config-if)#ppp multilink group 13
R1(config-if)#no shutdown

1.1 Configuring the interface serial5/0 on Router R1
R1(config)#interface Serial5/0
R1(config-if)#encapsulation ppp
R1(config-if)#ppp multilink
R1(config-if)#ppp multilink group 13
R1(config-if)#no shutdown

1.2 Configuring the interface serial5/1 on router R1
R1(config)#interface Serial5/1
R1(config-if)#encapsulation ppp
R1(config-if)#ppp multilink
R1(config-if)#ppp multilink group 13
R1(config-if)#no shutdown

Now, you should configure the router at other end in that case is the route R2

Step 2 Configuring multilink on router R2
R2(config)#interface multilink 13
R2(config-if)#ip address 192.168.16.2 255.255.255.252
R2(config-if)#ppp multilink
R2(config-if)#ppp multilink group 13
R2(config-if)#no shutdown

2.1 Configuring the interface serial5/0 on Router R2
R2(config)#interface Serial5/0
R2(config-if)#encapsulation ppp
R2(config-if)#ppp multilink
R2(config-if)#ppp multilink group 13
R2(config-if)#no shutdown

2.2 Configuring the interface serial5/1 on router R2
R2(config)#interface Serial5/1
R2(config-if)#encapsulation ppp
R2(config-if)#ppp multilink
R2(config-if)#ppp multilink group 13
R2(config-if)#no shutdown

Verify the multilink on router R1 and R2
R1#show ppp multilink
Multilink13
Bundle name: R2
Remote Endpoint Discriminator: [1] R2
Local Endpoint Discriminator: [1] R1
Bundle up for 00:23:23, total bandwidth 3088, load 1/255
Receive buffer limit 24000 bytes, frag timeout 1000 ms
0/0 fragments/bytes in reassembly list
0 lost fragments, 0 reordered
0/0 discarded fragments/bytes, 0 lost received
0x46 received sequence, 0x46 sent sequence
Member links: 2 active, 0 inactive (max 255, min not set)
Se5/0, since 00:23:23
Se5/1, since 00:23:11
No inactive multilink interfaces
R1#

R2#show ppp multilink
Multilink13
Bundle name: R1
Remote Endpoint Discriminator: [1] R1
Local Endpoint Discriminator: [1] R2
Bundle up for 00:25:42, total bandwidth 3088, load 1/255
Receive buffer limit 24000 bytes, frag timeout 1000 ms
0/0 fragments/bytes in reassembly list
0 lost fragments, 0 reordered
0/0 discarded fragments/bytes, 0 lost received
0x4C received sequence, 0x4C sent sequence
Member links: 2 active, 0 inactive (max 255, min not set)
Se5/0, since 00:25:42
Se5/1, since 00:25:29
No inactive multilink interfaces
R2#

Configuring EIGRP for IPv4 as routing protocol

Configuring EIGRP on router R1

R1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R1(config)#router eigrp 2
R1(config-router)#network 192.168.16.0 0.0.0.3
R1(config-router)#network 192.168.15.0 0.0.0.255
R1(config-router)#
*Sep  5 13:13:25.831: %DUAL-5-NBRCHANGE: EIGRP-IPv4 2: Neighbor 192.168.16.2 (Multilink13) is up: new adjacency
R1(config-router)#no auto-summary

Configuring EIGRP on router R2

R2#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R2(config)#router eigrp 2
R2(config-router)#network 192.168.16.0 0.0.0.3
R2(config-router)#
*Sep  5 13:11:35.811: %DUAL-5-NBRCHANGE: EIGRP-IPv4 2: Neighbor 192.168.16.1 (Multilink13) is up: new adjacency
R2(config-router)#network 192.168.14.0 0.0.0.255
R2(config-router)#no auto-summary
R2(config-router)#end

Verifying the routing table

Download the lab, EIGRP over multink ppp,[download id=”4128″]