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Cisco 2801 with 2 ISP

petrutz_21
Beginner
Beginner

Hi all !!

Could someone help me with a simple configuration of a 2801 Router. I have 2 internet providers with static ip's connected to F0/0 and F0/1 and one Vlan for LAN area. I would like to configure the router to use one primary line and just in case to use the back-up line. What should i use ?

This is how i configured:

interface FastEthernet0/0

description ISP1

ip address 192.168.8.10 255.255.255.0

ip nat outside

duplex auto

speed auto

!

interface FastEthernet0/1

description ISP2

ip address 192.168.2.10 255.255.255.0

ip nat outside

duplex auto

speed auto

!

interface FastEthernet0/3/0

!

interface FastEthernet0/3/1

!

interface FastEthernet0/3/2

!

interface FastEthernet0/3/3

!

interface Vlan1

description $ES_LAN$

ip address 192.168.1.1 255.255.255.0

ip nat inside

!

ip route 0.0.0.0 0.0.0.0 192.168.8.1

ip route 0.0.0.0 0.0.0.0 192.168.2.1 10

!

ip nat inside source route-map ISP2 interface FastEthernet0/1 overload

ip nat inside source route-map ISP1 interface FastEthernet0/0 overload

!

access-list 100 permit ip 192.168.1.0 0.0.0.255 any

route-map ISP2 permit 10

match ip address 100

match interface FastEthernet0/1

!

route-map ISP1 permit 10

match ip address 100

match interface FastEthernet0/0

!

!

control-plane

Now if detects that it hasn't cable link on the FastEthernet interfaces it's working. I'm using 2 wireless gateways to acces the internet each one connected on the 2 FaEth for simulating the providers. If i simulate an issue on the provider ( i've removed the sim from the wireless gateway) it doesn't pass on the second isp.

I haved trying to configure with  "IP Service Level Agreements " for failover / load balancing but the command "ip sla" is incomplete. I can't make an update of the IOS because the customer do not have an Service Contract with Cisco.

There is another way to configure it?

Thanks in advance !

What configuration should i make further ?

15 Replies 15

Thanks Renjen,

I will search more and if I will not find a proper solution .. I will try to follow the procedure with the IOS updating ..

If I will find a "gate out"  i will posted here

Thanks again... 

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