Serial interface UP line protocol up then down and up again....etc

[mohameddjelouah]

hello i have new router 4300 series in my end and serial line and the outher end we have the ISP router im getting line protocol down  and lose connection and after a while line protocol up with connection coming back thats happen all the day we cant work in that situation thats my config  i hope u will answer me and am sorry for my english 

interface Tunnel1
bandwidth 10000000
ip address 173.16.1.29 255.255.255.0
no ip redirects
ip nhrp authentication CISCO
ip nhrp map multicast 172.27.3.6
ip nhrp map 173.16.1.1 172.27.3.6
ip nhrp network-id 1
ip nhrp nhs 173.16.1.1
delay 100
tunnel mode gre multipoint
!
interface GigabitEthernet0/0/0
ip address 10.98.42.222 255.255.255.224
negotiation auto
!
interface GigabitEthernet0/0/1
no ip address
negotiation auto
!
interface Serial0/1/0
no ip address
shutdown
!
interface Serial0/1/1
ip address 172.27.5.2 255.255.255.252
encapsulation ppp

[Georg Pauwen]

Hello,

post the output of 'show interfaces serial0/1/1'

[mohameddjelouah]

sorry but am far away from it in another office  like 50km and i cant acces with ssh duo to that problem but am going there soon and i will post the config later thank you

[paul driver]

Hello

---

@mohameddjelouah wrote:

sorry but am far away from it in another office  like 50km and i cant acces with ssh duo to that problem but am going there soon and i will post the config later thank you

---

You can perform some troubleshooting from either office.

Please post the output of the the following:
sh interface serial x/x
sh controllers (serial interface)
debug ppp negotiation

[mohameddjelouah]

i have an image to show you whats really happen i cant do ssh see the ping 

[mohameddjelouah · Accepted solution]

problem solved thank you the problem was a hardware issues the ISP change some cables and some parts thank you 

[Richard Burts]

Thank you for posting back to the community and letting us know that the problem is solved and that it was an issue with provider cabling. +5 for letting us know about this.

HTH

Rick