This was one of the most exasperating things that I have worked on in some time. The client got a bonded ADSL PPPoE connection from CenturyLink with 40Mbps Up by 2Mbps Down. The PPPoE was to authenticate the connection to CenturyLink.
Reconfigure the Technicolor C2000T modem into Bridged Mode
- Login to the modem and click on the “Wireless” button
- Disable the wireless completely and click on the “Apply” button
- Click on the “Advanced” button then click on the “DHCP Settings” along the left hand menu
- Disable DHCP completely and click the “Apply” button
- Click on the “WAN Settings” and change the ISP Protocol to “Transparent Bridging” then click on the “Apply” button
- Reboot the modem and move on to configuring the Juniper router
Configure the Juniper SRX 210 for the Bonded ADSL PPPoE connection
Enter the following commands on the router CLI:
- Set the underlaying interface encapsulation to be PPP-Over-Ethernet:
set interfaces ge-0/0/0 unit 0 encapsulation ppp-over-ether
- Set PPP Options with Authentication method CHAP:
set interfaces pp0 unit 0 ppp-options chap default-chap-secret YOUR-PASSWORD
set interfaces pp0 unit 0 ppp-options chap local-name YOUR-USERNAME
set interfaces pp0 unit 0 ppp-options chap no-rfc2486
set interfaces pp0 unit 0 ppp-options chap passive
- Set the PPPoE Options to the underlaying interface along with connection options:
set interfaces pp0 unit 0 pppoe-options underlying-interface ge-0/0/0.0
- Set the the pp0 interface to automatically negotiate the IP address:
set interfaces pp0 unit 0 family inet negotiate-address
- Set the security zone pp0.0 interface WAN (untrust):
set security zones security-zone WAN interfaces pp0.0
- If you are experiencing any fragmentation issue, you may want to adjust the tcp-mss setting as below, this was the part that I left out and had random websites not connecting:
set security flow tcp-mss all-tcp mss 1300
If your company is using a Juniper JunOS router or CenturyLink Bonded ADSL PPPoE connection to the internet, then contact us for assistance.