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New Member

Unable to get to Internet through Cisco 2811

I'm attempting to test out a Verizon 4G backup solution for my companies branch offices, but I'm having an issue getting traffic to internet. The topology is:

Laptop to Cisco 3750

Cisco 3750 to Cisco 2811 (via 802.1q trunk)

Cisco 2811 to Sierra Wireless appliance (connected to Verizon)

From the router CLI, I am able to ping out to several Google.com IP addresses (8.8.8.8, 74.125.25.103, etc.). Unfortunately, whether I connect the laptop through the 3750 switch, or directly to the 2811, I cannot ping out to those same addresses. Here are the configs...

Cisco 3750

no service pad

service timestamps debug uptime

service timestamps log uptime

no service password-encryption

!

hostname Switch

!

logging buffered 60000 debugging

!

ip subnet-zero

!

!

spanning-tree mode pvst

no spanning-tree optimize bpdu transmission

spanning-tree extend system-id

!

!

interface FastEthernet1/0/1

switchport trunk encapsulation dot1q

switchport trunk allowed vlan 101,201

switchport mode trunk

!

interface FastEthernet1/0/2

description test pc

switchport access vlan 101

switchport mode access

!

!

!

!        

interface Vlan1

shutdown

!

interface Vlan101

description Data

!

interface Vlan201

description Voice

!

ip classless

ip http server

!

!

line con 0

logging synchronous

line vty 0 4

login

line vty 5 15

login

!        

end

Cisco 2811

version 12.4

service timestamps debug datetime msec

service timestamps log datetime msec

no service password-encryption

!

hostname Router

!

boot-start-marker

boot-end-marker

!

logging buffered 60000 debugging

!

no aaa new-model

!

resource policy

!

memory-size iomem 15

no network-clock-participate wic 0

no network-clock-participate aim 0

ip subnet-zero

!        

!

ip cef

!

!

no ip domain lookup

!

!

voice-card 0

no dspfarm

!

!

!

!

!

!

!

!

!

!

!

!

!

!        

!

!

controller T1 0/0/0

framing esf

linecode b8zs

!

!

!

!

!

interface FastEthernet0/0

no ip address

duplex auto

speed auto

no keepalive

!

interface FastEthernet0/0.101

encapsulation dot1Q 101

ip address 10.101.1.251 255.255.255.0

ip nat inside

ip virtual-reassembly

no snmp trap link-status

!        

interface FastEthernet0/0.201

encapsulation dot1Q 201

ip address 10.101.3.1 255.255.255.0

shutdown

no snmp trap link-status

!

interface FastEthernet0/1

description Sierra Wireless to Verizon 4G

ip address 166.154.89.160 255.255.255.0

ip nat outside

ip virtual-reassembly

duplex auto

speed auto

!

interface Async0/1/0

no ip address

!

ip classless

ip route 0.0.0.0 0.0.0.0 FastEthernet0/1

!

!

no ip http server

no ip http secure-server

ip nat source list 10 interface FastEthernet0/1 overload

!

access-list 10 permit 10.101.1.0 0.0.0.255

!

!

!

!

control-plane

!

!

!

!

!

!

!

!

!

!

line con 0

logging synchronous

line aux 0

line 0/1/0

stopbits 1

speed 115200

flowcontrol hardware

line vty 0 4

login

!

scheduler allocate 20000 1000

!

end

1 ACCEPTED SOLUTION

Accepted Solutions
Purple

Unable to get to Internet through Cisco 2811

Hi,

no  ip nat source list 10 interface FastEthernet0/1 overload

ip nat inside source list 10 interface FastEthernet0/1 overload

no ip route 0.0.0.0 0.0.0.0 FastEthernet0/1

ip route 0.0.0.0 0.0.0.0  x.x.x.x where x.x.x.x is Verizon next-hop IP

Regards

Alain

Don't forget to rate helpful posts.

Don't forget to rate helpful posts.
4 REPLIES
Purple

Unable to get to Internet through Cisco 2811

Hi,

no  ip nat source list 10 interface FastEthernet0/1 overload

ip nat inside source list 10 interface FastEthernet0/1 overload

no ip route 0.0.0.0 0.0.0.0 FastEthernet0/1

ip route 0.0.0.0 0.0.0.0  x.x.x.x where x.x.x.x is Verizon next-hop IP

Regards

Alain

Don't forget to rate helpful posts.

Don't forget to rate helpful posts.

Re:Unable to get to Internet through Cisco 2811

Hello
What I can se at present( very limited on my mobile) anyway

On your router:

1) Your subinterface 201 is shutdown
2) your nat statement is incorrect

Try:
Ip nat Inside source list 10 interface FastEthernet0/1 overload

ip route 0.0.0.0 0.0.0.0 fa0/1 (next hop ip)

On 3750

Conf t
Vlan 101 , 201
exit

res
Paul

Sent from Cisco Technical Support Android App

Please don't forget to rate any posts that have been helpful. Thanks.

Re:Unable to get to Internet through Cisco 2811

Hello

Apologies just noticed cadet alain beat me to it!

Res
Paul

Sent from Cisco Technical Support Android App

Please don't forget to rate any posts that have been helpful. Thanks.
New Member

Unable to get to Internet through Cisco 2811

Thanks Alain! That did the trick.

I appreciate the responses. Cheers

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