Re: Timeout waiting for PADO packets

anas.abdullkarim · ‎03-29-2020

Dear all

i have make router as PPPOE server ,

and more of 4000 Client is connected find

but sometime the clinet is stuck and can't connected

i open the wifi-router of one of client (he have problem , his user not connect )

and go to log fine in router

i see this message

May 23 04:25:36 pppd[933]: Timeout waiting for PADO packets
May 23 04:25:36 pppd[933]: Unable to complete PPPoE Discovery
May 23 04:25:52 pppd[933]: Timeout waiting for PADO packets
May 23 04:25:52 pppd[933]: Unable to complete PPPoE Discovery
May 23 04:26:04 wireless: ath0     New Access Point/Cell address:B4:FB:E4:DE:59:07
May 23 04:26:08 pppd[933]: Timeout waiting for PADO packets
May 23 04:26:08 pppd[933]: Unable to complete PPPoE Discovery

many user have same issues , so they turnoff then turn-on they wifi-router , then they user is conneced

note : i make all my client in same VLan (from router to another switch's )

why some client can't PPPoE Discovery or he dealy ? and how to fix this from router side

some of my config in router

aaa authentication ppp default group radius
aaa authorization network default group radius
aaa accounting delay-start all
aaa accounting nested
aaa accounting update periodic 1
aaa accounting network default start-stop group radius
aaa accounting system default start-stop group radius
aaa server radius dynamic-author
 client 94.231.199.99 server-key 7 121F0C1517190E05242F342D212031015E44
 server-key 7 104D000A0618
 auth-type any
 ignore session-key
 ignore server-key
aaa session-id common

!
interface Virtual-Template1
 mtu 1460
 ip unnumbered Loopback0
 no ip redirects
 ip nat inside
 ip tcp adjust-mss 1400
 ip policy route-map ROUTE-TV
 no logging event link-status
 peer default ip address pool interface localpool
 keepalive 30
 ppp authentication chap eap ms-chap ms-chap-v2 pap
 ppp ipcp dns 8.8.8.8 8.8.4.4
end

Cristian Matei · ‎03-30-2020

Hi,

The below messages indicate that the PPPoE client has sent the initial Discovery message, but failed to receive an offer:

May 23 04:25:36 pppd[933]: Timeout waiting for PADO packets
May 23 04:25:36 pppd[933]: Unable to complete PPPoE Discovery

So either there is a bug, probably on the PPPoE client side, or there is something happening at layer 2 (like for example are the links towards your routers configured as portfast), or is there anything else in your environment which could affect the layer 2end-to-end connectivity?

Regards,

Cristian Matei.

anas.abdullkarim · ‎03-30-2020

thanks for reply
what about Use PPPOE over VPLS ? do you have any idea about that ?

Cristian Matei · ‎03-31-2020

Hi,

It has to work, if this happens from time to time, take a closer look at your VPLS environment, at the transport network.

Regards,

Cristian Matei.