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need help on routing issue

kingelka23
Level 1
Level 1

Hi !

need your help for solving this issue

l have a router on one of ours sites ( can call it site B with lan address 193.10.24.0/24 )

l have a default route 0.0.0.0 0.0.0.0 192.168.10.195 (192.168.10.195 is the default gateway on Head Office SITE A)

all my hosts in others site use the same configuration and can use ressources in the site A (lan 192.168.10.0/24 is the site A lan , and all application servers, database and others ressources are on this LAN )

Internet is also configured to be shared with all sites ( a default route is configured in 192.168.10.195 to send internet request to my public gateway : 0.0.0.0 0.0.0.0 41.191.83.2 (it's an example !!)

My problem with site B host is that, they can reach all devices in the main site (site A ), and others sites hosts. we can make RDP sessions and ping them too from site A; they can use the application and databases. but they can't go to internet...

when i dit a traceroute from site B router (192.168.24.195 ) to a public IP ( yahoo.fr ou any public IP ) the router doesn't go firstly to the default gateway on site A and secondly to Site A public wan gateway (41.191.83.2 )

traceroute doesn't give anything.

l'm very confused , and don't know why my router on site B doesn't send unknow ip to default gateway and my users can't access on internet too !

please see below my current config on site B.

ps : site A router have a route set to join site B , there is no problem on this side and all others ressources are reachable.

!

version 12.2

no service pad

service tcp-keepalives-in

service tcp-keepalives-out

service timestamps debug datetime msec localtime show-timezone

service timestamps log datetime msec localtime show-timezone

no service password-encryption

service sequence-numbers

!

hostname Routeur_siteB

!

logging buffered 4096 debugging

logging console informational

enable password bibe

!

username XXXXX password 0 XXXXXX

clock timezone GMT 1

ip subnet-zero

no ip source-route

no ip gratuitous-arps

ip cef

!

!

no ip domain-lookup

ip name-server 81.91.236.71

ip name-server 81.91.236.72

!

no ip bootp server

!

!

!

interface Loopback1

ip address 192.168.0.2 255.255.255.255

!

interface FastEthernet0/0

ip address 192.168.10.18 255.255.255.0

no ip redirects

no ip unreachables

no ip proxy-arp

duplex auto

speed auto

no cdp enable

!

interface FastEthernet0/1

ip address 192.168.24.195 255.255.255.0

duplex auto

speed auto

no cdp enable

!

ip classless

ip route 0.0.0.0 0.0.0.0 192.168.10.195

no ip http server

ip http authentication local

ip pim bidir-enable

!

!

logging trap debugging

logging facility local2

access-list 1 permit any

no cdp run

!

line con 0

password XXXXXX

login

line aux 0

line vty 0 4

password XXXXXXX

login

!

!

end

when i make a traceroute to ( yahoo.fr IP address 77.238.178.122)

that's what i have

Routeur_siteB# traceroute 77.238.178.122

Type escape sequence to abort.

Tracing the route to 77.238.178.122

  1  *  *  *

  2  *  *  *

  3  *  *  *

  4  *  *  *

  5  *  *  *

  6  *  *  *

  7  *  *  *

  8  *  *  *

  9  *  *  *

10  *  *  *

Thanks !

2 Replies 2

Reza Sharifi
Hall of Fame
Hall of Fame

Hi,

Can site A (the head office) reach the Internet?

Can you post site A config router connecting to Internet?

Hi Reza

site A can reach internet without any problem

that's the same connexion we use to share internet for all ours branches

The Routeur on site A is a LOOP-E1  CSU/DSU use to grant access and share ressources on head office.

This router is very basic, juste add a rout to network 192.168.24.0/24  ( Net_address : 192.168.024.000  Netmask : 255.255.255.000  Gateway : 192.168.010.018  Network Interface : 192.168.010.195  )

And a default route on this LOOP router to send others requests to the public gateway :

Net_address 0.0.0.0 Netmask: 0.0.0.0 Gateway : 41.191.83.2  Network Interface : 41.191.83.1

My sites are connected by leased line or radio link.

Here is the configuration of another site connected to internet.

Current configuration : 1027 bytes

!

version 12.4

service timestamps debug datetime msec

service timestamps log datetime msec

no service password-encryption

!

hostname Router_siteC

!

boot-start-marker

boot-end-marker

!

enable password XXXXXXX

!

no aaa new-model

!

resource policy

!

mmi polling-interval 60

no mmi auto-configure

no mmi pvc

mmi snmp-timeout 180

ip subnet-zero

ip cef

!

!

no ip dhcp use vrf connected

!

!

ip name-server 81.91.236.71

ip name-server 81.91.236.72

!

!

!

!

interface FastEthernet0/0

ip address 192.168.10.198 255.255.255.0

duplex auto

speed auto

!

interface FastEthernet0/1

ip address 192.168.22.195 255.255.255.0

ip accounting output-packets

duplex auto

speed auto

!

interface Serial0/1/0

no ip address

shutdown

no fair-queue

clockrate 2000000

!

ip classless

ip route 0.0.0.0 0.0.0.0 192.168.10.195

!

ip http server

!

access-list 1 permit 192.168.10.0 0.0.0.255

access-list 2 permit 192.168.22.0 0.0.0.255

!

control-plane

!

!

line con 0

line aux 0

line vty 0 4

password XXXXX

login

!

end

What is strange, for me is why the traceroute on the routeur_B is not sent to the defaut gateway when i trying to ping yahoo server ?

Thanks for your help !!

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