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PPPoE Tx/Rx LCP unknown pkt code

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  • 1.  PPPoE Tx/Rx LCP unknown pkt code

    Posted 07-14-2018 07:10

    Every time subscriber authenticates juniper is showing that messages in log:

     

    Jul 14 11:03:28 PPPoE-Server bbesmgd[14229]: bbe_if_ppp_output: Tx LCP unknown pkt code 0x4 on ifl pp0.3221225497
    Jul 14 11:03:28 PPPoE-Server bbesmgd[14229]: bbe_if_ppp_input: Rx LCP unknown packet code 0xc on ifl pp0.3221225497

     

    Subscriber is working. But is normal that messages in log?

     

    My config:

     

    set dynamic-profiles PPPOE-PROFILE interfaces pp0 interface-mib
    set dynamic-profiles PPPOE-PROFILE interfaces pp0 unit "$junos-interface-unit" no-traps
    set dynamic-profiles PPPOE-PROFILE interfaces pp0 unit "$junos-interface-unit" ppp-options chap
    set dynamic-profiles PPPOE-PROFILE interfaces pp0 unit "$junos-interface-unit" ppp-options pap
    set dynamic-profiles PPPOE-PROFILE interfaces pp0 unit "$junos-interface-unit" ppp-options mtu 1492
    set dynamic-profiles PPPOE-PROFILE interfaces pp0 unit "$junos-interface-unit" ppp-options ipcp-suggest-dns-option
    set dynamic-profiles PPPOE-PROFILE interfaces pp0 unit "$junos-interface-unit" pppoe-options underlying-interface "$junos-underlying-interface"
    set dynamic-profiles PPPOE-PROFILE interfaces pp0 unit "$junos-interface-unit" pppoe-options server
    set dynamic-profiles PPPOE-PROFILE interfaces pp0 unit "$junos-interface-unit" keepalives interval 30
    set dynamic-profiles PPPOE-PROFILE interfaces pp0 unit "$junos-interface-unit" family inet rpf-check
    set dynamic-profiles PPPOE-PROFILE interfaces pp0 unit "$junos-interface-unit" family inet tcp-mss 1452
    set dynamic-profiles PPPOE-PROFILE interfaces pp0 unit "$junos-interface-unit" family inet unnumbered-address lo0.0
    set dynamic-profiles PPPOE-PROFILE interfaces pp0 unit "$junos-interface-unit" family inet6 rpf-check
    set dynamic-profiles PPPOE-PROFILE interfaces pp0 unit "$junos-interface-unit" family inet6 tcp-mss 1452
    set dynamic-profiles PPPOE-PROFILE interfaces pp0 unit "$junos-interface-unit" family inet6 address $junos-ipv6-address
    set dynamic-profiles PPPOE-PROFILE interfaces pp0 unit "$junos-interface-unit" family inet6 unnumbered-address lo0.0

     



  • 2.  RE: PPPoE Tx/Rx LCP unknown pkt code

     
    Posted 07-14-2018 07:29

    Hi,

     

    As per the RFC, Reception of a LCP packet with an unknown Code indicates that the peer is operating with a different version.  This MUST be reportedback to the sender of the unknown Code by transmitting a Code-Reject.

     

    Hence the "bbe-smgd" process reponsiable for subscriber is reporting such meaages. What type/vendor of CPE are you using?

     



  • 3.  RE: PPPoE Tx/Rx LCP unknown pkt code

     
    Posted 07-14-2018 07:39

     

    To add some more info, In junos 16.1 onwards, we have added code to report error log.

    You should probably check at the CPE end as to why they sent such type of pkt.

    Message are for informational purpose. They're not harmful & can ingore those log message.



  • 4.  RE: PPPoE Tx/Rx LCP unknown pkt code

    Posted 07-14-2018 07:44

    I'm trying pppoe on a windows 10 machine.



  • 5.  RE: PPPoE Tx/Rx LCP unknown pkt code
    Best Answer

     
    Posted 07-14-2018 07:52

    Thank for let us know. I believe those unknow LCP frames are doing of windows 10 PPPoE Client.

    Try using actual CPE (like modem or so). Anyways, as i mention in previous post, the messages reported from bbe-smgd process are for information use. You may ingore them.