Centurylink PPPoE over Vlan Authentication Problems.



  • Hey there,

    I've gone through multiple installs trying to figure this one out. As others in various places have mentioned, Centurylink provides in some areas PPPoE with a Vlan tag for internet (201.) I've began my quest with a pfSense installation on my Proxmox box. After figuring out Vlan bridging and such I was able to seemingly connect to the Vlan. However, no matter what I tried, my authentication never works. (See logs below.) Even did bare metal install and was getting same auth problems.

    I've verified twice that my username and password is correct and entered it into the C3000Z modem/router combo they provided at the $10 a month expense.

    I've tried converting my password from/to base 64 because somewhere I found that when gathering it directly from telnetting into the modem, it gave it in base 64 and you needed to convert to give you the real password.

    An example of fake login/password credentials are lastnameFirstname@quest.net and P6jx8Xfj

    Any pointing in the right direction is appreciated.

    Example auth session:
    May 2 06:17:17 ppp [wan_link0] LCP: LayerUp
    May 2 06:17:17 ppp [wan_link0] CHAP: rec'd CHALLENGE #76 len: 40
    May 2 06:17:17 ppp [wan_link0] Name: "JUNOS"
    May 2 06:17:17 ppp [wan_link0] CHAP: Using authname " lastnameFirstname@quest.net"
    May 2 06:17:17 ppp [wan_link0] CHAP: sending RESPONSE #76 len: 47
    May 2 06:17:19 ppp [wan_link0] CHAP: sending RESPONSE #76 len: 47
    May 2 06:17:19 ppp [wan_link0] CHAP: rec'd FAILURE #76 len: 4
    May 2 06:17:19 ppp [wan_link0] LCP: authorization failed
    May 2 06:17:19 ppp [wan_link0] LCP: parameter negotiation failed
    May 2 06:17:19 ppp [wan_link0] LCP: state change Opened –> Stopping
    May 2 06:17:19 ppp [wan_link0] LCP: SendTerminateReq #11
    May 2 06:17:19 ppp [wan_link0] LCP: LayerDown
    May 2 06:17:19 ppp [wan_link0] LCP: rec'd Terminate Request #157 (Stopping)
    May 2 06:17:19 ppp [wan_link0] LCP: SendTerminateAck #12
    May 2 06:17:19 ppp [wan_link0] PPPoE: connection closed
    May 2 06:17:19 ppp [wan_link0] Link: DOWN event
    May 2 06:17:19 ppp [wan_link0] LCP: Down event
    May 2 06:17:19 ppp [wan_link0] LCP: state change Stopping –> Starting
    May 2 06:17:19 ppp [wan_link0] Link: reconnection attempt 4 in 2 seconds
    May 2 06:17:21 ppp [wan_link0] Link: reconnection attempt 4
    May 2 06:17:21 ppp [wan_link0] PPPoE: Connecting to ''
    May 2 06:17:21 ppp PPPoE: rec'd ACNAME "ptld-dsl-gw49.ptld.qwest.net"
    May 2 06:17:21 ppp [wan_link0] PPPoE: connection successful
    May 2 06:17:21 ppp [wan_link0] Link: UP event
    May 2 06:17:21 ppp [wan_link0] LCP: Up event
    May 2 06:17:21 ppp [wan_link0] LCP: state change Starting –> Req-Sent
    May 2 06:17:21 ppp [wan_link0] LCP: SendConfigReq #13
    May 2 06:17:21 ppp [wan_link0] PROTOCOMP
    May 2 06:17:21 ppp [wan_link0] MRU 1492
    May 2 06:17:21 ppp [wan_link0] MAGICNUM 0x649f8c0b
    May 2 06:17:21 ppp [wan_link0] LCP: rec'd Configure Request #113 (Req-Sent)
    May 2 06:17:21 ppp [wan_link0] MRU 1492
    May 2 06:17:21 ppp [wan_link0] AUTHPROTO CHAP MD5
    May 2 06:17:21 ppp [wan_link0] MAGICNUM 0x678d2ad1
    May 2 06:17:21 ppp [wan_link0] LCP: SendConfigAck #113
    May 2 06:17:21 ppp [wan_link0] MRU 1492
    May 2 06:17:21 ppp [wan_link0] AUTHPROTO CHAP MD5
    May 2 06:17:21 ppp [wan_link0] MAGICNUM 0x678d2ad1
    May 2 06:17:21 ppp [wan_link0] LCP: state change Req-Sent –> Ack-Sent
    May 2 06:17:21 ppp [wan_link0] LCP: rec'd Configure Ack #13 (Ack-Sent)
    May 2 06:17:21 ppp [wan_link0] PROTOCOMP
    May 2 06:17:21 ppp [wan_link0] MRU 1492
    May 2 06:17:21 ppp [wan_link0] MAGICNUM 0x649f8c0b
    May 2 06:17:21 ppp [wan_link0] LCP: state change Ack-Sent –> Opened
    May 2 06:17:21 ppp [wan_link0] LCP: auth: peer wants CHAP, I want nothing
    May 2 06:17:21 ppp [wan_link0] LCP: LayerUp
    May 2 06:17:21 ppp [wan_link0] CHAP: rec'd CHALLENGE #96 len: 69
    May 2 06:17:21 ppp [wan_link0] Name: "JUNOS"
    May 2 06:17:21 ppp [wan_link0] CHAP: Using authname " lastnameFirstname@quest.net"
    May 2 06:17:21 ppp [wan_link0] CHAP: sending RESPONSE #96 len: 47



  • :( No one responds.



  • Have you tried without any VLAN at all?  My office bonded connection works fine without it.  VLAN is at the bridged modem  Technicolor T2000 model here. Or is it C2000T  I forget..



  • Yes! Indeed I have, doesn't give me the chap sent/response from quest I'd expect however.



  • Fiber or DSL?  What Modem??  NAT or Bridge?