01-29-2013 11:08 AM - edited 03-07-2019 11:23 AM
Hi !
We have an Urgent issue were in the Internet is not working , the setup is like this
Service provider modem ----> 1700 series router ---> switch ----> PC's .
Service provider confirmed there is no issue on there side..
We have been given static ip's and when we configure the Static ip in laptop , with DNS server ip's given by the Service provider .
the internet works.
but same information if we configure in the router it doesnt work.
Kindly guide us to get this resolved ..
Thanks,
Solved! Go to Solution.
01-29-2013 11:19 AM
are this configuration working before ?
If not see ypur canles ... i have soon this isue with non Cisco full B making cable.
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Posted by WebUser Alex Stoikov from Cisco Support Community App
01-29-2013 11:16 AM
Can you please provide the config of the 1700 router?
Sent from Cisco Technical Support iPhone App
01-29-2013 11:19 AM
are this configuration working before ?
If not see ypur canles ... i have soon this isue with non Cisco full B making cable.
---
Posted by WebUser Alex Stoikov from Cisco Support Community App
01-29-2013 11:30 AM
Yes this was an working configuration , suddenly stopped working.
01-29-2013 11:32 AM
One more Added information , we tried changing the router 2620 series with same configs stil the same condition, we replaced with new cables ...no luck
Are there any specific hardware / software to be verified..
01-29-2013 11:36 AM
are this configuration working before ?
If not see ypur canles ... i have soon this isue with non Cisco full B making cable.
Can you provide some more information , i didnt get your answer.
01-29-2013 12:52 PM
pls add the config 2 chk..then only I can tell u...:P,but chk acl,nat/pat,default route...
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Posted by WebUser Rama Krishna from Cisco Support Community App
01-29-2013 08:03 PM
Here is the config ,
interface FastEthernet0/0
ip address 10.0.x.1 255.255.240.0
ip access-group 181 in
ip accounting output-packets
ip nat inside
speed auto
full-duplex
no cdp enable
!
interface Serial0/0
ip address 203.122.210.164 255.255.255.252
ip access-group 169 in
ip accounting output-packets
load-interval 30
no fair-queue
!
interface Ethernet1/0
ip address 122.166.95.86 255.255.255.0
ip access-group 169 in
ip access-group 170 out
ip accounting output-packets
ip nat outside
load-interval 30
full-duplex
!
ip default-gateway 122.166.95.1
ip nat inside source list 1 interface Ethernet1/0 overload
ip nat inside source static tcp 10.0.x.11 8075 122.166.95.86 8075 extendable
ip nat inside source static tcp 10.0.x.223 8090 122.166.95.86 8090 extendable
ip nat inside source static tcp 10.0.x.51 80 122.166.95.87 80 extendable
ip nat inside source static tcp 10.0.x.51 22 122.166.95.87 22 extendable
ip nat inside source static udp 10.0.x.200 5060 122.166.95.86 5060 extendable
ip nat inside source static udp 10.0.x.204 5060 122.166.95.86 5060 extendable
ip classless
ip route 0.0.0.0 0.0.0.0 Ethernet1/0
ip route 0.0.0.0 0.0.0.0 122.166.95.1
no ip http server
!
!
access-list 1 permit 10.0.0.0 0.255.255.255
access-list 170 permit icmp any any echo
access-list 170 permit icmp any any echo-reply
access-list 170 deny udp any any eq 1434
access-list 170 permit udp any any eq echo
access-list 170 permit udp any eq echo any
access-list 170 permit tcp any any established
access-list 170 permit tcp any any
access-list 170 permit ip any any
dialer-list 1 protocol ip permit
snmp-server community public RO
snmp-server enable traps tty
!
end
XXXXX#ping 122.166.95.86
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 122.166.95.86, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
01-29-2013 08:40 PM
Hello Nisha,
I assume Ethernet1/0 leads to 122.166.95.1?
ip route 0.0.0.0 0.0.0.0 Ethernet1/0
ip route 0.0.0.0 0.0.0.0 122.166.95.1
If so go ahead and remove "ip route 0.0.0.0 0.0.0.0 Ethernet1/0" as that is superfluous.
Were you able to ping 122.166.95.86 from the PC? Try to ping something like 8.8.8.8 and see if your results are the same.
01-30-2013 12:01 AM
Hi Gabriel Hill,
"I assume Ethernet1/0 leads to 122.166.95.1? "- It leads to 122.166.95.1, but when we ping from router results 3/5 (3 packets out 5) eventually 4 and then later 5.
"Were you able to ping 122.166.95.86 from the PC? Try to ping something like 8.8.8.8 and see if your results are the same" - I am able to ping 122.166.95.86 as well 122.166.95.1 from there i am not able to reach service provider's DNS servers as well 8.8.8.8 and 4.2.2.2
Thanks!
01-31-2013 04:40 PM
Hello,
The ping result you posted shows that you can't ping self!!
You also have 3 interfaces FastEthernet0/0, FastEthernet1/0 and Serial0/0 .. In your diagram, you stated that you have 2 connection, LAN to switch and WAN to ISP ... Can you identify the interfaces and to where are they connected?
01-29-2013 08:57 PM
Hi,
Kindly share the router & switch(if it is a manageable ) configurtion.
Please verify the Nating configuration on the router.
Hi,
Kindly share the router & switch(if it is a manageable ) configurtion.
Please verify the Nating configuration on the router.
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Posted by WebUser Sathya Moorthy from Cisco Support Community App
01-31-2013 07:53 PM
I would remove the ACLs from your interfaces and test again. Then you can see if its a routing or NAT issue.
I see ACL 169 configured on your LAN port but no mention of it in your config. This could be causing problems for you as well.
Elton
Sent from Cisco Technical Support iPhone App
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