[A9K] PPPOE ESTABLTION TAKES A LONG TIME

[anas.abdullkarim]

hello, I have router A9K with IOS XE, we i try to connect the client user (Windows) to the router as a PPPOE session

the first step (connecting) and second (authentication ) are fast, but step three takes a long time as the image I an attachment

my router configuration =

dynamic-template
type ppp QINQ
service-policy type pbr NBR-PPPOE
ppp timeout retry 9
ppp authentication chap ms-chap pap
ppp timeout authentication 20
keepalive 15 5
ppp timeout absolute 172800
ppp ipcp dns 91.192.7.10 8.8.8.8
ppp ipcp peer-address pool subscriber6
accounting aaa list default type session periodic-interval 1 dual-stack-delay 5
ipv4 verify unicast source reachable-via rx
ipv4 unnumbered Loopback1000
!
pppoe bba-group PPPOE
mtu 1460
tag ppp-max-payload minimum 1460 maximum 1492
service selection disable
pado delay 0
timeout completion 30
!

policy-map type control subscriber PPPOE_QINQ
event session-start match-first
class type control subscriber PPP do-until-failure
10 activate dynamic-template QINQ
!
!
event session-activate match-first
class type control subscriber PPP do-until-failure
10 authenticate aaa list default
!
!
end-policy-map
!

[balaji.bandi]

After long time do you have connection ? or stay there for long.

Last time I tested  it was taking some 30-1min due to some tweak you can achieve best.

Run debug on ASR and see what causing the issue : ( what is the version of code running on router, do you have DHCP pool configured the one mentioned in the pool address ?) - what operating system is this ? XP/7/8/10 ?

debug ppp negotiation

[anas.abdullkarim]

hello, we tested in windows 7/10/11  same delay then more than 30 sec,

we have another BNG on ASR1000 , but is take only 2 sec to connected 

[balaji.bandi]

hello, we tested in windows 7/10/11  same delay then more than 30 sec,

- so this affecting with ASR 9K, what the code running on ASR 9K

- have you run the debug and see where the delay taking place ?

we have another BNG on ASR1000 , but is takes only 2 sec to connected 

 - what IOX XE running on this box, can you share the config here ?

[anas.abdullkarim]

hello ,

that my config  for BNG

dynamic-template
type ppp QINQ
service-policy type pbr NBR-PPPOE
ppp timeout retry 9
ppp authentication chap ms-chap pap
ppp timeout authentication 20
keepalive 15 5
ppp timeout absolute 172800
ppp ipcp dns 91.192.7.10 8.8.8.8
ppp ipcp peer-address pool subscriber6
accounting aaa list default type session periodic-interval 1 dual-stack-delay 5
ipv4 verify unicast source reachable-via rx
ipv4 unnumbered Loopback1000
!
pppoe bba-group PPPOE
mtu 1460
tag ppp-max-payload minimum 1460 maximum 1492
service selection disable
pado delay 0
timeout completion 30
!

policy-map type control subscriber PPPOE_QINQ
event session-start match-first
class type control subscriber PPP do-until-failure
10 activate dynamic-template QINQ
!
!
event session-activate match-first
class type control subscriber PPP do-until-failure
10 authenticate aaa list default
!
!
end-policy-map
!

[balaji.bandi]

is the same config on both device?

have got a chance to run debug and see what's wrong where is the lag occurring?

[anas.abdullkarim]

hello , am never a user debug, bcz current router have 10K user, and debug is too danger to service with high traffic,

the router  a1k is a different config, bcz A9K has. IOS XR , and A1K is has IOS XE 

can you please check my config? is correct or missing something?

[MHM Cisco World]

Hi Anas, 
check this link same issue and solution is increase throttled, make double check before apply change 

https://blog.xentoo.info/2016/03/18/cisco-ios-pptp-server-ppp-packet-throttled-dropping-packet/

[anas.abdullkarim]

hello , thanks for share good docoments 

but do you have any idea how to apply 

ppp packet throttle 20 1 30 

but any idea how to apply same commned on ios xr

[MHM Cisco World]

I want to mention here, ""make double check before apply change""

sessions mac throttle 20 1 30

[anas.abdullkarim]

hello , i applied it , same result 

[balaji.bandi]

that is the reason we asked to post IOS XR Config,

understand debug have some impact, but XR was build for SP environment, so you can debug specif instance and find out the reason.

is the Lag for all 10K users ?

[anas.abdullkarim]

hello, the issue is not when i reach to 10K user

when first time i used router and was one PPPOE session , is also take time more then 30 seconds to connected 

[balaji.bandi]

the issue is not when i reach to 10K user

the question was asked - is the slow or lag login for all the users - ( since you mentioned the kit using 10K users, so all the 10K users having same issue ?)

when first time i used router and was one PPPOE session , is also take time more then 30 seconds to connected 

what does you mean when you use router one PPPOE Session ? how about other users ?

Note :  we have requested the config of IOS XR - you looking to further help - you need to provide more information - if not we playing in the dark......end no results.

check some debug tips :

https://community.cisco.com/t5/service-providers-knowledge-base/asr9000-bng-debugging-pppoe-sessions/tac-p/3125615/highlight/true

[anas.abdullkarim]

hello,

how to debug specif instance