04-19-2020 08:45 PM - edited 04-19-2020 09:18 PM
Good afternoon, I have a cisco 3750 and a router 2951. 6 VLANs are configured on 3750. I do not have Internet pings on 3750, even though I can ping a router. I need HELP i undestend i make somthing silly but i cant fix that
CISCO 2950:
interface GigabitEthernet0/0
description INSIDE TO 3750
ip address 192.168.98.1 255.255.255.0
ip nat inside
ip virtual-reassembly in
duplex auto
speed auto
!
interface GigabitEthernet0/1
description OUTSIDE
ip address 91.24.87.67 255.255.255.0
ip nat outside
ip virtual-reassembly in
duplex auto
speed auto
ip route 0.0.0.0 0.0.0.0 91.24.87.254
router eigrp 2
network 192.168.1.0
network 192.168.98.0
network 192.168.99.0
network 192.168.100.0
network 192.168.101.0
network 192.168.102.0
network 192.168.103.0
network 192.168.104.0
network 192.168.105.0
redistribute static
output 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, p - overrides from PfR
Gateway of last resort is 91.24.87.254 to network 0.0.0.0
S* 0.0.0.0/0 [1/0] via 91.24.87.254
91.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 91.230.154.0/24 is directly connected, GigabitEthernet0/1
L 91.230.154.12/32 is directly connected, GigabitEthernet0/1
D 192.168.1.0/24 [90/3072] via 192.168.98.2, 00:32:49, GigabitEthernet0/0
192.168.98.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.98.0/24 is directly connected, GigabitEthernet0/0
L 192.168.98.1/32 is directly connected, GigabitEthernet0/0
D 192.168.99.0/24 [90/3072] via 192.168.98.2, 00:32:49, GigabitEthernet0/0
D 192.168.100.0/24
[90/3072] via 192.168.98.2, 00:32:49, GigabitEthernet0/0
D 192.168.101.0/24
[90/3072] via 192.168.98.2, 00:32:49, GigabitEthernet0/0
D 192.168.102.0/24
[90/3072] via 192.168.98.2, 00:32:49, GigabitEthernet0/0
D 192.168.103.0/24
[90/3072] via 192.168.98.2, 00:32:49, GigabitEthernet0/0
D 192.168.104.0/24
[90/3072] via 192.168.98.2, 00:32:49, GigabitEthernet0/0
D 192.168.105.0/24
[90/3072] via 192.168.98.2, 00:32:49, GigabitEthernet0/0
CISCO 3750
interface GigabitEthernet1/0/2
description TO ROUTER
no switchport
ip address 192.168.98.2 255.255.255.0
router eigrp 2
network 192.168.1.0
network 192.168.98.0
network 192.168.99.0
network 192.168.100.0
network 192.168.101.0
network 192.168.102.0
network 192.168.103.0
network 192.168.104.0
network 192.168.105.0
redistribute static
output 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 192.168.98.1 to network 0.0.0.0
D*EX 0.0.0.0/0 [170/28416] via 192.168.98.1, 00:32:12, GigabitEthernet1/0/2
192.168.1.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.1.0/24 is directly connected, Vlan1
L 192.168.1.254/32 is directly connected, Vlan1
192.168.98.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.98.0/24 is directly connected, GigabitEthernet1/0/2
L 192.168.98.2/32 is directly connected, GigabitEthernet1/0/2
192.168.99.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.99.0/24 is directly connected, Vlan99
L 192.168.99.254/32 is directly connected, Vlan99
192.168.100.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.100.0/24 is directly connected, Vlan100
L 192.168.100.254/32 is directly connected, Vlan100
192.168.101.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.101.0/24 is directly connected, Vlan101
L 192.168.101.254/32 is directly connected, Vlan101
192.168.102.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.102.0/24 is directly connected, Vlan102
L 192.168.102.254/32 is directly connected, Vlan102
192.168.103.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.103.0/24 is directly connected, Vlan103
L 192.168.103.254/32 is directly connected, Vlan103
192.168.104.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.104.0/24 is directly connected, Vlan104
L 192.168.104.254/32 is directly connected, Vlan104
192.168.105.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.105.0/24 is directly connected, Vlan105
L 192.168.105.254/32 is directly connected, Vlan105
Ping 3750 to 2951
ping 91.24.87.67
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 91.24.87.67, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/27/117 ms
ping 91.24.87.254
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 91.24.87.254, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
Solved! Go to Solution.
04-19-2020 11:10 PM
Hello,
do you actually have the two lines below in the configuration of your 2951 router ?
ip nat inside source list 1 interface GigbaitEthernet0/1 overload
!
access-list 1 permit 192.168.0.0 0.0.255.255
04-19-2020 09:30 PM
Check if the natting is happening in the router. Try pinging the internet keeping routers switch facing interface as source.
Check show ip nat translations.
04-19-2020 09:54 PM
show ip nat translations, empty, then i pinging 8.8.8.8
04-19-2020 11:10 PM
Hello,
do you actually have the two lines below in the configuration of your 2951 router ?
ip nat inside source list 1 interface GigbaitEthernet0/1 overload
!
access-list 1 permit 192.168.0.0 0.0.255.255
04-19-2020 11:40 PM
Thanks very very much, it works now
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