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Load sharing FR connection with ADSL connection

john.vossikas
Level 1
Level 1

Dear All ,

i have 2611XM with the following conf.

service timestamps debug uptime

service timestamps log uptime

no service password-encryption

!

hostname ess-cy

!

boot-start-marker

boot system flash:c2600-ik8o3s-mz.123-3.bin

boot-end-marker

!

logging buffered 52000 debugging

!

clock timezone Europe/Athens 2

clock summer-time Europe/Athens date Mar 30 2003 3:00 Oct 26 2003 4:00

no aaa new-model

ip subnet-zero

ip cef

!

!

ip domain name ddddddddd

ip name-server 194.154.128.2

!

ip audit notify log

ip audit po max-events 100

no ftp-server write-enable

!

!

!

!

!

!

!

!

!

!

!

!

no voice hpi capture buffer

no voice hpi capture destination

!

!

!

!

!

!

interface FastEthernet0/0

description $ETH-WAN$Connection to ADSL

ip address dhcp client-id FastEthernet0/0

no ip redirects

no ip proxy-arp

ip nat outside

duplex auto

speed auto

!

interface Serial0/0

bandwidth 512

no ip address

encapsulation frame-relay IETF

ip route-cache policy

frame-relay lmi-type q933a

!

interface Serial0/0.1 point-to-point

description Connection To Spidernet

bandwidth 512

ip address 194.154.134.150 255.255.255.252

no ip redirects

no ip proxy-arp

no cdp enable

frame-relay interface-dlci 20 IETF

!

interface FastEthernet0/1

description $ETH-LAN$Connection To Firebox

ip address 194.154.134.161 255.255.255.248

no ip redirects

no ip proxy-arp

ip nat inside

ip route-cache policy

duplex auto

speed auto

!

ip nat pool Cytanet 212.31.103.51 212.31.103.54 netmask 255.255.255.248

ip nat inside source list 1 pool Cytanet

ip http server

ip http authentication local

ip http secure-server

ip classless

ip route 0.0.0.0 0.0.0.0 194.154.134.149

ip route 0.0.0.0 0.0.0.0 212.31.103.49

!

!

access-list 1 permit 194.154.134.160 0.0.0.7

!

!

!

!

!

dial-peer cor custom

!

!

!

!

banner login ^CXXXXXXXXXXXXXXXXXXX^C

!

line con 0

line aux 0

line vty 0 4

privilege level 15

login local

transport input telnet ssh

line vty 5 15

privilege level 15

login local

transport input telnet ssh

!

!

!

end

The problem that i have is that on the fastethernet 0/1 i have a firewal which is doing the nat.

With these equal routes i do have connection to the internet but very slow .

What should i do for load balancing the two connections?

Thanks!

1 Reply 1

Hello,

since you have CEF enabled, per-destination load-sharing is enabled (which is the default when configuring CEF). Depending on your destinations, traffic might be routed over the (slower, I would assume) frame relay link.

I am wondering if effective load sharing is possible in your situation, since you have a firewall that is doing NAT. What is connected to the other end of the frame relay connection ? Part of your internal network ? Can you try and route traffic for the specific networks (if they exist) at the other end of the frame relay connection out interface Serial0/0.1, and point all other traffic to the firewall, that is, leave the default route pointing to 212.31.103.49 as is ?

Regards,

GP

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