server can't ping passed router?

Hi, the server can't ping pc's but the router can? I have set the DNS IP on the router.

Maybe its something to do with the switches?

This is what it looks like.

Students are vlan 10
Staff are vlan 20
Wireless is vlan 77

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Comments

hiddenknight821

needforspeed wrote: »

Hi, the server can't ping pc's but the router can? I have set the DNS IP on the router.

Maybe its something to do with the switches?

I may not be helpful, but I think you might want to check the access list on the router to see if the router is permitting anything. Honestly, I don't think you provide enough information for us to help you troubleshoot, but I could be wrong. I am not even halfway through with my ICND2 study.

needforspeed

I have tried permitting the 192.168.10.0/24 , 192.168.20.0/24 and server

!
version 12.2
no service timestamps log datetime msec
no service timestamps debug datetime msec
service password-encryption
!
hostname ABC-Birmingham
!
!
!
enable secret 5 $1$mERr$hx5rVt7rPNoS4wqbXKX7m0
!
!
ip dhcp excluded-address 192.168.10.1
ip dhcp excluded-address 192.168.20.1
ip dhcp excluded-address 192.168.77.1
ip dhcp excluded-address 192.168.88.1
!
ip dhcp pool staff
network 192.168.20.0 255.255.255.0
default-router 192.168.20.1
ip dhcp pool wireless
network 192.168.77.0 255.255.255.0
default-router 192.168.77.1
ip dhcp pool voice
network 192.168.88.0 255.255.255.0
default-router 192.168.88.1
ip dhcp pool students
network 192.168.10.0 255.255.255.0
default-router 192.168.10.1
!
!
!
!
!
!
!
no ip domain-lookup
ip domain-name h**p://www.abc.com
ip name-server 192.168.0.2
!
!
!
!
!
!
interface FastEthernet0/0
ip address 192.168.0.2 255.255.255.0
ip nat inside
duplex auto
speed auto
!
interface FastEthernet0/1
no ip address
duplex auto
speed auto
!
interface FastEthernet0/1.1
encapsulation dot1Q 1 native
ip address 192.168.1.254 255.255.255.0
!
interface FastEthernet0/1.10
encapsulation dot1Q 10
ip address 192.168.10.254 255.255.255.0
!
interface FastEthernet0/1.20
encapsulation dot1Q 20
ip address 192.168.20.254 255.255.255.0
!
interface FastEthernet0/1.77
encapsulation dot1Q 77
ip address 192.168.77.254 255.255.255.0
!
interface FastEthernet0/1.88
encapsulation dot1Q 88
ip address 192.168.88.254 255.255.255.0
!
interface FastEthernet0/1.99
encapsulation dot1Q 99
ip address 192.168.99.1 255.255.255.0
!
interface Serial0/0
no ip address
encapsulation frame-relay ietf
!
interface Serial0/0.101 multipoint
ip address 172.16.0.1 255.255.255.0
frame-relay map ip 172.16.0.2 101 broadcast
ip nat outside
!
interface Serial0/1
no ip address
shutdown
!
router rip
!
ip nat inside source static 192.168.0.2 172.16.0.4
ip classless
ip route 0.0.0.0 0.0.0.0 FastEthernet0/0
!
!
access-list 10 permit 192.168.10.0 0.0.0.255
access-list 10 permit 192.168.20.0 0.0.0.255
access-list 10 permit 192.168.77.0 0.0.0.255
access-list 10 permit host 192.168.0.2
!
no cdp run
!
!
!
!
!
line con 0
password 7 0822455D0A16
login
line vty 0 4
password 7 0822455D0A16
login
line vty 5 15
password 7 0822455D0A16
login
!
!
!
end

Eildor

I haven't got to studying NAT just yet... so I can't help you there.

I do think if you provided your configuration it would make it easier for others to help you.

Looks like you have ROAS configured there, can the PC's ping each other?

Eildor

What's the IP address you have assigned to the ABC Intranet Server?

needforspeed

eildor wrote: »

what's the ip address you have assigned to the abc intranet server?

192.168.0.2

Eildor

But fa0/0 has 192.168.0.2 assigned to it -- or is there something I should know about?

needforspeed

I changed it to 172.16.0.4 now.

Eildor

needforspeed wrote: »

I changed it to 172.16.0.4 now.

Did that fix the problem?

needforspeed

Eildor wrote: »

Did that fix the problem?

No, nothing can ping passed the router. Only the router itself can ping the switches, server and pc's. The router can't ping the wireless as well which is ip 192.168.77.0/24

needforspeed

This is what one of the pc's look like.

Eildor

I like a challenge, you could send me the file if you want

Don't know if I'll be able to help, but I'm sure someone else will provide a response soon.

okplaya

needforspeed wrote: »

I changed it to 172.16.0.4 now.

So, you have the server with a 172.16 address and it's default gateway is 192.168?

Looks like you have the "ip nat inside" on the wrong interface as well.

What is your original intention with the lab?

hiddenknight821

Now I think you might have an obvious solution to your problem. If the server is facing the NAT server on the router, then it should not be able to ping anything behind the NAT except the inside global IP addresses. Try pinging from the PCs and see if it can ping the server.

If that doesn't work then try using debugging command on the router and ping from the server to see what message appears.

needforspeed

I have to configure Static NAT to the Intranet Server using Global Address 172.16.0.4/24 mapped to the private address 192.168.0.2/24. Use Fa0/1 as the NAT inside port and s0/0/0.101 as the NAT outside.

Lazydog

Can you post the output from the following commands:

sh ip int bri
sh ip route

MrRyte

needforspeed wrote: »

!
no ip domain-lookup
ip domain-name h**p://www.abc.com
ip name-server 192.168.0.2
!

:

Not sure how this relates to your issues-but I think you're supposed to have ip domain-lookup enabled in this case.....

.....right?

needforspeed

If the server ip is not 192.168.0.2 same as the router Fa0/0 it can't ping the router for some reason?

sh ip int bri
Interface IP-Address OK? Method Status Protocol

FastEthernet0/0 192.168.0.2 YES manual up up

FastEthernet0/1 unassigned YES unset up up

FastEthernet0/1.1 192.168.1.254 YES manual up up

FastEthernet0/1.10 192.168.10.254 YES manual up up

FastEthernet0/1.20 192.168.20.254 YES manual up up

FastEthernet0/1.77 192.168.77.254 YES manual up up

FastEthernet0/1.88 192.168.88.254 YES manual up up

FastEthernet0/1.99 192.168.99.1 YES manual up up

Serial0/0 unassigned YES unset up up

Serial0/0.101 172.16.0.1 YES manual up up

show ip route
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
i - IS-IS, 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 0.0.0.0 to network 0.0.0.0

172.16.0.0/24 is subnetted, 1 subnets
C 172.16.0.0 is directly connected, Serial0/0.101
C 192.168.0.0/24 is directly connected, FastEthernet0/0
C 192.168.1.0/24 is directly connected, FastEthernet0/1.1
C 192.168.10.0/24 is directly connected, FastEthernet0/1.10
C 192.168.20.0/24 is directly connected, FastEthernet0/1.20
C 192.168.77.0/24 is directly connected, FastEthernet0/1.77
C 192.168.88.0/24 is directly connected, FastEthernet0/1.88
C 192.168.99.0/24 is directly connected, FastEthernet0/1.99
C 192.168.100.0/24 is directly connected, FastEthernet0/1
S* 0.0.0.0/0 is directly connected, FastEthernet0/0

MrRyte

What's the status? Have it resolved yet?

Priston

On your picture you have 2 devices with the same address, the FA port connected to your server and your server. If you did change the address on your server like you posted you need to make sure the FA port connected to your server is on the same subnet, but not the same address.

Forsaken_GA

needforspeed wrote: »

I have to configure Static NAT to the Intranet Server using Global Address 172.16.0.4/24 mapped to the private address 192.168.0.2/24. Use Fa0/1 as the NAT inside port and s0/0/0.101 as the NAT outside.

You should probably review your configuration and look at what interfaces you have set for nat.

If you're setting up NAT between the intranet servers and the PC's, the intranet server is not going to be able to ping the PC's directly, btw. The PC's should be able to ping the server, because the Router will translate the pings to look like it's coming from itself, but as far as the intranet server is concerned, the router is the only node it's connected to, and the only node it sees traffic from, so it's the only thing it should be able to ping.