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GNS3 internet

leinad427
Level 1
Level 1

I have a lab on GNS3 and I have my Local area connection mapped to it I have a router and 1 SW running OSPF between the two devices and Image is included, I can ping from the router to google dns server 8.8.8.8 but I can not get from the SW to 8.8.8.8 . I can ping from the sw to the router interface 192.168.1.100. What could I be missing? Thank you in advance.

 

 

 

R1#show ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route

Gateway of last resort is 192.168.1.1 to network 0.0.0.0

10.0.0.0/29 is subnetted, 1 subnets
C 10.0.1.0 is directly connected, FastEthernet0/1
C 192.168.1.0/24 is directly connected, FastEthernet0/0
S* 0.0.0.0/0 [1/0] via 192.168.1.1

==========================

R1 Config

==========================

R1#show runn br
Building configuration...

Current configuration : 1240 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R1
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
no ip icmp rate-limit unreachable
ip cef
!
!
!
!
no ip domain lookup
ip auth-proxy max-nodata-conns 3
ip admission max-nodata-conns 3
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
ip tcp synwait-time 5
!
!
!
!
!
interface FastEthernet0/0
ip address 192.168.1.100 255.255.255.0
duplex auto
speed auto
!
interface Serial0/0
no ip address
shutdown
clock rate 2000000
!
interface FastEthernet0/1
ip address 10.0.1.1 255.255.255.248
duplex auto
speed auto
!
interface Serial0/1
no ip address
shutdown
clock rate 2000000
!
router ospf 1
router-id 1.1.1.4
log-adjacency-changes
network 10.0.1.0 0.0.0.7 area 0
network 192.168.1.0 0.0.0.255 area 0
default-information originate
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 192.168.1.1
!
!
no ip http server
no ip http secure-server
!
no cdp log mismatch duplex
!
!
!
control-plane
!
!
!
!
!
!
!
!
!
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
line aux 0
exec-timeout 0 0
privilege level 15
logging synchronous
line vty 0 4
login
!
!
end

 

 

 

 

 

 

 

 

 

 

 

 

=====================================

SW1 config

===================================== 

Switch#show ip route
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
a - application route
+ - replicated route, % - next hop override

Gateway of last resort is 10.0.1.1 to network 0.0.0.0

O*E2 0.0.0.0/0 [110/10] via 10.0.1.1, 00:04:09, Vlan1
10.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 10.0.1.0/29 is directly connected, Vlan1
L 10.0.1.2/32 is directly connected, Vlan1
O 192.168.1.0/24 [110/11] via 10.0.1.1, 00:04:09, Vlan1

 

 

 

Switch#show runn br
Building configuration...

Current configuration : 3056 bytes
!
! Last configuration change at 08:02:35 UTC Sat Jan 20 2018
!
version 15.2
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
service compress-config
!
hostname Switch
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
!
!
!
!
!
!
!
!
ip cef
no ipv6 cef
!
!
!
spanning-tree mode rapid-pvst
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
!
!
!
!
!
!
!
!
!
!
!
!
!
interface GigabitEthernet0/0
switchport trunk encapsulation dot1q
switchport mode trunk
switchport nonegotiate
media-type rj45
negotiation auto
!
interface GigabitEthernet0/1
media-type rj45
negotiation auto
!
interface GigabitEthernet0/2
media-type rj45
negotiation auto
!
interface GigabitEthernet0/3
media-type rj45
negotiation auto
!
interface GigabitEthernet1/0
media-type rj45
negotiation auto
!
interface GigabitEthernet1/1
media-type rj45
negotiation auto
!
interface Vlan1
ip address 10.0.1.2 255.255.255.248
!
router ospf 1
router-id 1.1.1.3
network 10.0.1.0 0.0.0.7 area 0
!
ip forward-protocol nd
!
no ip http server
no ip http secure-server
!
!
!
!
!
!
control-plane
!
banner exec ^C
**************************************************************************
* IOSv is strictly limited to use for evaluation, demonstration and IOS *
* education. IOSv is provided as-is and is not supported by Cisco's *
* Technical Advisory Center. Any use or disclosure, in whole or in part, *
* of the IOSv Software or Documentation to any third party for any *
* purposes is expressly prohibited except as otherwise authorized by *
* Cisco in writing. *
**************************************************************************^C
banner incoming ^C
**************************************************************************
* IOSv is strictly limited to use for evaluation, demonstration and IOS *
* education. IOSv is provided as-is and is not supported by Cisco's *
* Technical Advisory Center. Any use or disclosure, in whole or in part, *
* of the IOSv Software or Documentation to any third party for any *
* purposes is expressly prohibited except as otherwise authorized by *
* Cisco in writing. *
**************************************************************************^C
banner login ^C
**************************************************************************
* IOSv is strictly limited to use for evaluation, demonstration and IOS *
* education. IOSv is provided as-is and is not supported by Cisco's *
* Technical Advisory Center. Any use or disclosure, in whole or in part, *
* of the IOSv Software or Documentation to any third party for any *
* purposes is expressly prohibited except as otherwise authorized by *
* Cisco in writing. *
**************************************************************************^C
!
line con 0
line aux 0
line vty 0 4
!
!
enlab.png

1 Accepted Solution

Accepted Solutions

Hello,

 

try and NAT the 10.0.1.0 network (additions to R1 configuration in bold):

 

Building configuration...

Current configuration : 1240 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R1
!
boot-start-marker
boot-end-marker
!
no aaa new-model
memory-size iomem 5
no ip icmp rate-limit unreachable
ip cef
!
no ip domain lookup
ip auth-proxy max-nodata-conns 3
ip admission max-nodata-conns 3
!
ip tcp synwait-time 5
!
interface FastEthernet0/0
ip address 192.168.1.100 255.255.255.0
ip nat outside
duplex auto
speed auto
!
interface Serial0/0
no ip address
shutdown
clock rate 2000000
!
interface FastEthernet0/1
ip address 10.0.1.1 255.255.255.248
ip nat inside
duplex auto
speed auto
!
interface Serial0/1
no ip address
shutdown
clock rate 2000000
!
router ospf 1
router-id 1.1.1.4
log-adjacency-changes
network 10.0.1.0 0.0.0.7 area 0
network 192.168.1.0 0.0.0.255 area 0
default-information originate
!
ip nat inside source list 1 interface FastEthernet0/0 overload
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 192.168.1.1
!
access-list 1 permit 10.0.1.0 0.0.0.7
!
no ip http server
no ip http secure-server
!
no cdp log mismatch duplex
!
control-plane
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
line aux 0
exec-timeout 0 0
privilege level 15
logging synchronous
line vty 0 4
login
!
end

View solution in original post

3 Replies 3

Hello,

 

try and NAT the 10.0.1.0 network (additions to R1 configuration in bold):

 

Building configuration...

Current configuration : 1240 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R1
!
boot-start-marker
boot-end-marker
!
no aaa new-model
memory-size iomem 5
no ip icmp rate-limit unreachable
ip cef
!
no ip domain lookup
ip auth-proxy max-nodata-conns 3
ip admission max-nodata-conns 3
!
ip tcp synwait-time 5
!
interface FastEthernet0/0
ip address 192.168.1.100 255.255.255.0
ip nat outside
duplex auto
speed auto
!
interface Serial0/0
no ip address
shutdown
clock rate 2000000
!
interface FastEthernet0/1
ip address 10.0.1.1 255.255.255.248
ip nat inside
duplex auto
speed auto
!
interface Serial0/1
no ip address
shutdown
clock rate 2000000
!
router ospf 1
router-id 1.1.1.4
log-adjacency-changes
network 10.0.1.0 0.0.0.7 area 0
network 192.168.1.0 0.0.0.255 area 0
default-information originate
!
ip nat inside source list 1 interface FastEthernet0/0 overload
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 192.168.1.1
!
access-list 1 permit 10.0.1.0 0.0.0.7
!
no ip http server
no ip http secure-server
!
no cdp log mismatch duplex
!
control-plane
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
line aux 0
exec-timeout 0 0
privilege level 15
logging synchronous
line vty 0 4
login
!
end

Hello,

 

in addition to my previous post, the NAT for secondary routers works (to my best knowledge) only with the Internet Appliance (not sure if you are already using this) linked below:

 

https://docs.gns3.com/1EjaCJlcM0RYIyyE_MbJOYNatEBnffOX5tcnJShR_KfY/index.html

Thank you for the help the issue was with 

 

ip nat inside source list 1 interface FastEthernet0/0 overload

 

I should of applied it to f0/1

 

 

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