As you can see from the diagram, R1 (in the middle) has sub-interfaces on S2/0, specifically S2/0. 12 (connected to R2 on the left) and S2/0.13 (connected to R3 on the right). Therefore, we can assume that the connection is a frame-relay connection.
If you don't know how to set up frame-relay, then again, I suggest you download the GNS3-WorkBench and check out the frame relay topologies. The one that matches yours best is the
ICND2 EIGRP Frame Relay Exercise. If you don't have GNS3 WorkBench, click on the link in my signature.
FYI, I have included the topology file for the frame-relay example from the GNS3-WorkBench example below:
Code:
autostart = False
[127.0.0.1:7200]
workingdir = /opt/GNS3/Working
udp = 10000
[[3725]]
image = /opt/GNS3/IOS/c3725-adventerprisek9-mz.124-15.T10.image
ram = 128
idlepc = 0x60c05928
ghostios = True
[[FRSW FRSW]]
1:102 = 2:201
1:103 = 3:301
2:201 = 1:102
2:203 = 3:302
3:301 = 1:103
3:302 = 2:203
1 = Belrose s0/0
2 = Mascot s0/0
3 = Blacktown s0/0
x = -96.5
y = -38.5
hx = -3.0
hy = 40.0
[[ROUTER Blacktown]]
model = 3725
console = 2001
cnfg = configs/Blacktown.cfg
wic0/0 = WIC-2T
s0/0 = FRSW 3
f0/0 = SW3 1
x = 19.0
y = 23.0
hx = -10.0
hy = 14.0
[[ROUTER Belrose]]
model = 3725
console = 2000
cnfg = configs/Belrose.cfg
wic0/0 = WIC-2T
s0/0 = FRSW 1
f0/0 = SW1 1
x = -107.292893219
y = -172.74011537
hx = -1.0
hy = 14.0
[[ETHSW SW1]]
1 = access 1 Belrose f0/0
2 = access 1 NIO_udp:30000:127.0.0.1:20000
x = -110.792893219
y = -269.74011537
hx = 10.0
hy = 12.0
[[ETHSW SW3]]
1 = access 1 Blacktown f0/0
2 = access 1 NIO_udp:30002:127.0.0.1:20002
x = 18.5
y = 132.0
hx = 10.0
hy = 12.0
[[ETHSW SW2]]
1 = access 1 Mascot f0/0
2 = access 1 NIO_udp:30001:127.0.0.1:20001
x = -240.5
y = 129.0
hx = 10.0
hy = 12.0
[[ROUTER Mascot]]
model = 3725
console = 2002
cnfg = configs/Mascot.cfg
wic0/0 = WIC-2T
s0/0 = FRSW 2
f0/0 = SW2 1
x = -236.0
y = 20.0
hx = 2.5
hy = 14.0
[GNS3-DATA]
configs = configs
workdir = /opt/GNS3/Working
[[NOTE 1]]
text = DLCIs:\nBelrose 102 -> Mascot\nBelrose 103 -> Blacktown\nMascot 201 -> Belrose\nMascot 203 -> Blacktown\nBlacktown 301 -> Belrose\nBlacktown 302 -> Mascot
x = -342.5
y = -172.5
color = "#101010"
[[NOTE 2]]
text = Fa0/0 192.0.2.30/27
x = -35.5
y = -212.5
color = "#101010"
[[NOTE 3]]
text = WAN IPs\nBelrose: DLCI 102 192.168.0.129/30\nBelrose: DLCI 103 192.168.0.133/30\nMascot: DLCI 201 192.168.0.130/30\nMascot: DLCI 203 192.168.0.137/30\nBlacktown: DLCI 301 192.168.0.134/30\nBlacktown: DLCI 302 192.168.0.138/30
x = -1.0
y = -172.5
color = "#101010"
[[NOTE 4]]
text = Loopback IPs:\nBelrose: 192.0.2.255/32\nMascot: 192.0.2.254/32\nBlacktown: 192.0.2.253/32
x = -344.0
y = -281.5
color = "#101010"
[[NOTE 5]]
text = 192.0.2.65/27
x = 79.5
y = 222.5
color = "#101010"
[[NOTE 6]]
text = Fa0/0 192.0.2.62/27
x = -181.5
y = 64.5
color = "#101010"
[[NOTE 7]]
text = Fa0/0 192.0.2.94/27
x = 79.5
y = 64.5
color = "#101010"
[[NOTE 8]]
text = 192.0.2.33/27
x = -181.5
y = 222.5
color = "#101010"
[[NOTE 9]]
text = 192.0.2.1/27
x = -35.5
y = -385.5
color = "#101010"
[[Cloud PC1]]
symbol = computer
x = -107.792893219
y = -383.24011537
hx = 13.0
hy = 6.0
connections = SW1:2:NIO_udp:30000:127.0.0.1:20000
[[Cloud PC2]]
symbol = computer
x = -237.5
y = 218.5
hx = 13.0
hy = 6.0
connections = SW2:2:NIO_udp:30001:127.0.0.1:20001
[[Cloud PC3]]
symbol = computer
x = 23.5
y = 216.5
hx = 13.0
hy = 6.0
connections = SW3:2:NIO_udp:30002:127.0.0.1:20002
_________________
RedNectarhttp://rednectar.net@rednectarchrisGNS3 WorkBench-a VMware image of Ubuntu with GNS3 and VPCS installed and a collection of exercises/labs
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