06-14-2006 09:24 AM - edited 03-03-2019 01:00 PM
Hi,
I have a cisco 1751 with two wan cards,
One ADSL and one E1.
My normal outgoing traffic flows for the E1 link of 256 kbps, I want to route all the outgoing traffic for the ADSl link, and leave just the E1 for the incoming request to the company.
Is that possible?, I have tried OSPF, but I didnt get good results.
Somebody have an idea how I should configure my cisco to load balance the traffic.
This is the config of the cisco 1751
controller E1 1/0
framing NO-CRC4
clock source internal
channel-group 0 timeslots 1-4
!
interface ATM0/0
description atm0
mtu 1492
bandwidth 1024
no ip address
ip nat outside
no atm ilmi-keepalive
dsl operating-mode auto
interface ATM0/0.1 point-to-point
description atm0.1
bandwidth 1024
ip nat outside
pvc 8/35
pppoe-client dial-pool-number 1
!
interface FastEthernet0/0
ip address 200.x.x.x 255.255.255.240
ip nat inside
ip tcp adjust-mss 1452
speed auto
traffic-shape group 101 128000 128000 8000 4096
interface Serial1/0:0
bandwidth 256
ip address 200.52.x.x 255.255.255.252
interface Dialer1
description DSL
mtu 1492
bandwidth 1024
ip address negotiated
ip access-group 110 in
ip nat outside
encapsulation ppp
ip tcp header-compression iphc-format
no ip mroute-cache
dialer pool 1
...............
ip route 0.0.0.0 0.0.0.0 200.52.x.x
06-14-2006 09:39 AM
"and leave just the E1 for the incoming request to the company. " can you clear me it exactly...?
and as your post title is to loadbalancing ...but i think above statement is taking about you want to let your internal traffice travel to internet using DSL line and want your incoming traffice will come throught the E1...
you can utilise both the link for load balancing means your internet traffic will pass through both the link ...
regards
Devang
06-14-2006 09:56 AM
The first idea was to balance the traffic. Using both links.
But the problem I just have 256 kilobits in the E1 and in this interface I am receiving the applications traffic (SMTP, HTTP, SSL) and I have a group of dedicated IPs for those services.
In the ADSL I have 2 megabits with a dynamic IP.
That why I thought a good idea will be route all the outgoing traffic (web browse, smtp, etc) to the ADSL and just leave the E1 for the incoming traffic of the actual applications (SMTP, HTTP, SSL)
I tried to split the traffic with these lines but it didnt work
Ip route 0.0.0.0 0.0.0.0 dialer1 1
// Metric 1 for the DSL traffic
Ip route 0.0.0.0 0.0.0.0 200.52.14.x 2
// Metric 2 for the E1
I think I need to create a private network between this cisco and the PIX to be able to nat this traffic to the DSL interface.
The PIX outside interface has one of the IP address provided for the E1 interface.
Do you have a better idea?
06-14-2006 10:06 AM
when you are confiugre the router with the static route using different AD then router will select the best path to the destination with the better AD means lowest AD...so router will transfer allthe data to that route so here you will not have load balancing...so for that you have to go for the both the same AD...but as you said you are having 2m ADSL and 256k of E1...then at that time if you want to let more your traffic will leave your network throught the ADSL then you need to have the unequal cost path load balancing (EIGRP support the unequal cost path load balancing) means using this you can have more traffic taravel throught the ADSL and less from the E1...or you have to go for the BGP which is complex but having more future for the policy routing...
hope this explanation helps you
remeber to rate this post if it helps
regards
Devang
06-14-2006 02:38 PM
Devang,
Do you have an example of the configuration will work in this case?
I added this to the router.
interface serial 0.1 point-to-point
ip summary-address eigrp 100 0.0.0.0 0.0.0.0
router eigrp 1
variance 2
network 0.0.0.0
auto-summary
But I dont know what I should configure in the interfaces serial and the dialer1
What about OSPF? is that posible to use it?
06-15-2006 01:43 AM
you can use it but OSPF is having equal cost path load balancing...
rate this post if it helps
regards
Devang
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