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IOS NAT Load-Balancing for Two ISP Connections using PPOE

closer152634
Level 1
Level 1

Hi Guys,

 

Can i get an advise regarding issue that im facing on my customer infrastructure. The customer is using router 2900, they have 2 active ISP connection using PPPOE (the call it UNIFI in Malaysia). So I'm trying to setup a load balance traffic between this 2 ISP connection and i follow the step in Cisco in IOS NAT Load-Balancing for Two ISP Connections.

 

(http://www.cisco.com/c/en/us/support/docs/ip/network-address-translation-nat/100658-ios-nat-load-balancing-2isp.html)

 

And i find out that the configuration is not success, I did a step like below:

1. define LAN-facing interface with ip nat inside

2. define ISP facing interface with ip nat outside

3. create ip route (with dialer 1 & 2)

4. create ACL define ACLs for traffic that are NATed to the ISP connection

5.configure route map

6. configure NAT overload (PAT) in order to use route-map.

 

Then, i did a second troubleshoot with ping test to google, and i find out from the router i can ping to google 8.8.8.8 using source interface dialer 1, but i cannot ping it using source interface dialer 2.

 

router#ping 8.8.8.8 so dialer 1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 8.8.8.8, timeout is 2 seconds:
Packet sent with a source address of 203.106.220.185
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 12/14/16 ms


router#ping 8.8.8.8 so dialer 2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 8.8.8.8, timeout is 2 seconds:
Packet sent with a source address of 219.92.17.153
.....
Success rate is 0 percent (0/5)

 

I've suspected the port have an issue, then i try to swap the cable from interface connected to dialer1 to dialer 2 (ive change the configuration on dialer 1 with dialer2), i got the same result (ip negotiated in "int brief") but i still cant ping using dialer 2.

 

So i need advise guys, 

1. can load balance configuration be done on router 2900?

2. why my dialer2 ISP account cannot ping to 8.8.8.8 while dialer 1 have no issue?

3. I've attached the configuration for your advise. TQ

 

 

 

 

 

1 Reply 1

amirzayev
Level 1
Level 1

Hi,

 

Hoe did you solve your problem?

 

Thanks!