I'm using GNS3 emulator. The switche and PCs are just routers but I've change there display icon to make it look like a switch and two PCs
I can’t ping from R1 to R2 or from SW1 to R1
I can ping from SW1 to R2
I can ping from R3 to R2 interface F0/0 & S0/0
I still didn’t configure the path from R1 to the ISP
I’ve set the default-gateway for the switch to R1
Routing Protocol OSPF
I've tried nearly everything. I can't see any OSPF neighbors on R1
I've changed the duplex on routers and switch to half and full again. Same with speed 10 to 100
Attached are the config files for R1,R2,R3 & SW1.
Please check the attachment files and diagram.
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Router 1
========
R1#sh ip int bri
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 10.24.0.1 YES NVRAM up up
Serial0/0 188.23.163.173 YES NVRAM up down
FastEthernet0/1 unassigned YES NVRAM administratively down down
R1#sh arp
Protocol Address Age (min) Hardware Addr Type Interface
Internet 10.24.0.1 - c200.2064.0000 ARPA FastEthernet0/0
R1#sh cdp ne
R1#sh cdp neighbors
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater
Device ID Local Intrfce Holdtme Capability Platform Port ID
SW1 Fas 0/0 123 R S I 3725 Fas 0/0
R1#sh ip ospf n
R1#sh ip ospf neighbor
R1#ping 10.24.0.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.24.0.2, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
R1#ping 10.24.0.11
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.24.0.11, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
R1#
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Router 2
========
R2#sh ip int bri
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 10.24.0.2 YES NVRAM up up
Serial0/0 10.15.1.13 YES NVRAM up up
FastEthernet0/1 unassigned YES NVRAM administratively down down
R2#!
R2#sh arp
Protocol Address Age (min) Hardware Addr Type Interface
Internet 10.24.0.2 - c202.1ca8.0000 ARPA FastEthernet0/0
R2#!
R2#sh cdp neighbors
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater
Device ID Local Intrfce Holdtme Capability Platform Port ID
SW1 Fas 0/0 132 R S I 3725 Fas 1/0
R3 Ser 0/0 139 R S I 3725 Ser 0/0
R2#!
R2#sh ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
10.15.1.14 0 FULL/ - 00:00:38 10.15.1.14 Serial0/0
R2#!
R2#ping 10.24.0.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.24.0.1, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
R2#ping 10.24.0.11
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.24.0.11, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 8/24/56 ms
R2#
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Switch
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SW1#sh ip int bri
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 unassigned YES NVRAM up up
FastEthernet0/1 unassigned YES NVRAM up up
FastEthernet1/0 unassigned YES unset up up
FastEthernet1/1 unassigned YES unset up down
FastEthernet1/2 unassigned YES unset up down
FastEthernet1/3 unassigned YES unset up down
FastEthernet1/4 unassigned YES unset up down
FastEthernet1/5 unassigned YES unset up down
FastEthernet1/6 unassigned YES unset up down
FastEthernet1/7 unassigned YES unset up down
FastEthernet1/8 unassigned YES unset up down
FastEthernet1/9 unassigned YES unset up down
FastEthernet1/10 unassigned YES unset up down
FastEthernet1/11 unassigned YES unset up down
FastEthernet1/12 unassigned YES unset up down
FastEthernet1/13 unassigned YES unset up down
FastEthernet1/14 unassigned YES unset up down
FastEthernet1/15 unassigned YES unset up down
Vlan1 10.24.0.11 YES NVRAM up up
SW1#!
SW1#sh arp
Protocol Address Age (min) Hardware Addr Type Interface
Internet 10.24.0.2 2 c202.1ca8.0000 ARPA Vlan1
Internet 10.24.0.11 - c206.1dc0.0000 ARPA Vlan1
SW1#!
SW1#sh cdp neighbors
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater
Device ID Local Intrfce Holdtme Capability Platform Port ID
R2 Fas 1/0 138 R S I 3725 Fas 0/0
R1 Fas 0/0 136 R S I 3725 Fas 0/0
SW1#!
SW1#ping 10.24.0.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.24.0.1, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
SW1#ping 10.24.0.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.24.0.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 8/24/40 ms
SW1#
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