Internet Stops randomly for users ISR4331 PPPOE

[prash723]

After random time (1-2 Days) internet access stops for Lan users. After doing shut - no shut for dialer 1 interface it starts working normally. Can anybody please help

Below are the PPPOE configuration

interface GigabitEthernet0/0/0
description Etisalat-Event-DSL-Link
no ip address
negotiation auto
pppoe enable group global
no cdp enable
pppoe-client dial-pool-number 1
end


interface Dialer1
ip address negotiated
ip nat outside
encapsulation ppp
ip tcp adjust-mss 1452
dialer pool 1
dialer-group 1
no cdp enable
ppp authentication pap chap callin
ppp chap hostname royal103
ppp chap password 7 094A5908115707025F
ppp pap sent-username royal103 password 7 15141C0D0C783B347C
ppp ipcp dns request accept
ppp ipcp route default
ppp ipcp address accept
no ip virtual-reassembly
end

When internet stops for user we can ping google.com from router CLI. 

Logs are attached in file (at the time when internet was stopped).

[Georg Pauwen]

Hello,

post the full running configuration (sh run) of your router.

[prash723]

Thanks for the response. I have attached the show run

[Georg Pauwen]

Hello,

try and take all the IPCP stuff out and use a default route instead. Also, add the MTU settings to the dialer interface:

interface Dialer1
ip address negotiated
--> ip mtu 1492
ip nat outside
encapsulation ppp
ip tcp adjust-mss 1452
dialer pool 1
dialer-group 1
no cdp enable
ppp authentication pap chap callin
ppp chap hostname royal103
ppp chap password 7 094A5908115707025F
ppp pap sent-username royal103 password 7 15141C0D0C783B347C
no ip virtual-reassembly
!
--> ip route 0.0.0.0 0.0.0.0 Dialer 1

[prash723]

Thanks for the suggestion.

MTU is already 1492 (doesn't shows in show run in version 16.6)

I will remove ipcp from dialer interface and add default route.

Lets test if this resolves the problem.

[Georg Pauwen]

Hello,

what else is in your network ? Your clients are not directly connected to the 4331, but to a device with IP address 192.168.12.2. Might be worth posting the configs of whatever other devices you have in the path from your clients to the 4331...

[prash723]

We made above changes yesterday and monitoring the router now. 

[Georg Pauwen]

Keep us updated...

[prash723]

Hi Georg,

The issue appeared again. Fixed with shut-no shut for dialer interface.

So putting manual default route didn't worked.

Regards,

Prashant

[paul driver]

Hello

Your configuration looks fine however the logging suggests a possible hardware related issue to this linecard, try reseating in into the rtr

[prash723]

Thanks for response.

Can you please point out which log suggest hardware related issue also the procedure for "reseating in into the rtr".

[paul driver]

Hello

000023: *Nov 9 09:03:41.064 DXB: %SYS-5-CONFIG_I: Configured from memory by console
000024: *Nov 9 09:03:41.082 DXB: %IOSXE_OIR-6-REMSPA: SPA removed from subslot 0/0, interfaces disabled
000025: *Nov 9 09:03:41.088 DXB: %SPA_OIR-6-OFFLINECARD: SPA (ISR4331-3x1GE) offline in subslot 0/0
000026: *Nov 9 09:03:41.093 DXB: %IOSXE_OIR-6-INSCARD: Card (fp) inserted in slot F0
000027: *Nov 9 09:03:41.093 DXB: %IOSXE_OIR-6-ONLINECARD: Card (fp) online in slot F0
000028: *Nov 9 09:03:41.095 DXB: %IOSXE_OIR-6-INSCARD: Card (cc) inserted in slot 0
000029: *Nov 9 09:03:41.095 DXB: %IOSXE_OIR-6-ONLINECARD: Card (cc) online in slot 0
000030: *Nov 9 09:03:41.097 DXB: %IOSXE_OIR-6-INSCARD: Card (cc) inserted in slot 1
000031: *Nov 9 09:03:41.097 DXB: %IOSXE_OIR-6-ONLINECARD: Card (cc) online in slot 1
000032: *Nov 9 09:03:41.110 DXB: %IOSXE_OIR-6-INSSPA: SPA inserted in subslot 0/0
000033: *Nov 9 09:03:42.132 DXB: %LINK-5-CHANGED: Interface GigabitEthernet0, changed state to administratively down
000034: *Nov 9 09:03:42.133 DXB: %IOSXE_RP_ALARM-6-INFO: CLEAR CRITICAL GigabitEthernet0 Physical Port Link Down
000035: *Nov 9 09:03:44.110 DXB: %SYS-5-RESTART: System restarted --
000036: *Nov 9 09:03:44.289 DXB: %LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-Access1, changed state to up
000037: *Nov 9 09:03:44.289 DXB: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to up
000038: *Nov 9 09:03:45.958 DXB: %SPA_OIR-6-ONLINECARD: SPA (ISR4331-3x1GE) online in subslot 0/0
000039: *Nov 9 09:03:46.836 DXB: %SYS-6-BOOTTIME: Time taken to reboot after reload = 365 seconds

show facility-alarm status
show platform diag

[prash723]

Hi Paul,

The issue appeared again, I have attached todays logs with platform Diagnostic Output.

Can you please check.

Regards,

Prashant

[SAMEHELSAMMAK]

AS I UNDERSTAND YOU ARE CONNECTING THE VDSL MODEM TO G0/0/0 IN BRIDGE MODE

THE LOG SHOWS THAT THE INT G0/0/0 GETS DOWN THEN DIALER GETS DOWN AFTER IT

THAT INDICATES A PROBLEM IN MODEM ITSELF NOT THE ROUTER 

CHNGE THE MODEM WITH NEW OR BETTER ONE THAT WILL FIX THE PROBLEM.

[prash723]

Thanks for the sugestion.

I will check for modem from ISP.