GRE Tunnel Protocol Down - Any help would be Awesome

[jasonbutryn]

See the attached:

Cant figure out why the tunnel had a 'down' protocol.

If you need more info from the routers...Let me know.  Thanx Team.

[Julio E. Moisa]

Hi,

Great! 

About the point to point subnets is the network that you used to connect to routers for example: 10.13.2.0/30 

:-)

Do you see the source and destination on Fox13 and 14?

[jasonbutryn]

Do the source and destination subnet masks need to match the tunnel subnet mask?

[Julio E. Moisa]

The source and destinations used on the topology are related to the subnets of the P2Ps but if you are referring to the tunnel IP, yes they should be the same subnet mask. 

[Julio E. Moisa]

Hi Jason,

Checking your config on Fox13, the serial interface with ip 10.13.2.2 is shutdown. It should be enabled.

[jasonbutryn]

Sorry its so late.... i do not see it being shutdown:

Serial2/1 is up, line protocol is up
Hardware is M4T
Internet address is 10.13.2.2/30
MTU 1500 bytes, BW 1544 Kbit/sec, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation HDLC, crc 16, loopback not set
Keepalive set (10 sec)
Restart-Delay is 0 secs
Last input 00:00:02, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: weighted fair
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/1/256 (active/max active/max total)
Reserved Conversations 0/0 (allocated/max allocated)
Available Bandwidth 1158 kilobits/sec
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
14168 packets input, 1172976 bytes, 0 no buffer
Received 4569 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
15195 packets output, 1255474 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 unknown protocol drops
0 output buffer failures, 0 output buffers swapped out
2 carrier transitions DCD=up DSR=up DTR=up RTS=up CTS=up

[Julio E. Moisa]

Hi  my friend, 

This is my configuration:

FOX13

vrf definition PIPE
rd 1:1
!
address-family ipv4
exit-address-family

interface Tunnel0
ip address 10.1.1.1 255.255.255.0
tunnel source 10.13.2.2
tunnel destination 10.4.14.2
tunnel vrf PIPE
!
interface Serial0/0
vrf forwarding PIPE
ip address 10.13.2.2 255.255.255.252

router ospf 1 vrf PIPE
network 10.13.2.2 0.0.0.0 area 0

ECHO2

vrf definition PIPE
rd 1:1
!
address-family ipv4
exit-address-family

interface Serial0/0
vrf forwarding PIPE
clock rate 64000
ip address 10.13.2.1 255.255.255.252
!
interface Serial0/1
vrf forwarding PIPE
clock rate 64000
ip address 10.2.4.2 255.255.255.252
!
router ospf 1 vrf PIPE
network 10.2.4.2 0.0.0.0 area 0
network 10.13.2.1 0.0.0.0 area 0

ECHO4

vrf definition PIPE
rd 1:1
!
address-family ipv4
exit-address-family

interface Serial0/0
clock rate 64000
vrf forwarding PIPE
ip address 10.4.14.1 255.255.255.252
!
interface Serial0/1
vrf forwarding PIPE
ip address 10.2.4.1 255.255.255.252

router ospf 1 vrf PIPE
network 10.2.4.1 0.0.0.0 area 0
network 10.4.14.1 0.0.0.0 area 0

FOX14

vrf definition PIPE
rd 1:1
!
address-family ipv4
exit-address-family

interface Tunnel0
ip address 10.1.1.2 255.255.255.0
tunnel source 10.4.14.2
tunnel destination 10.13.2.2
tunnel vrf PIPE
!
interface Serial0/0
vrf forwarding PIPE
ip address 10.4.14.2 255.255.255.252

router ospf 1 vrf PIPE
network 10.4.14.2 0.0.0.0 area 0

FOX13# ping vrf PIPE 10.4.14.2 source 10.13.2.2 repeat 10
Type escape sequence to abort.
Sending 10, 100-byte ICMP Echos to 10.4.14.2, timeout is 2 seconds:
Packet sent with a source address of 10.13.2.2
!!!!!!!!!!
Success rate is 100 percent (10/10), round-trip min/avg/max = 1/1/2 ms
FOX13#

FOX14# ping vrf PIPE 10.13.2.2 source 10.4.14.2 repeat 10
Type escape sequence to abort.
Sending 10, 100-byte ICMP Echos to 10.13.2.2, timeout is 2 seconds:
Packet sent with a source address of 10.4.14.2
!!!!!!!!!!
Success rate is 100 percent (10/10), round-trip min/avg/max = 1/1/2 ms
FOX14#

Hope it is useful

:-)

[jasonbutryn]

HAHA... Maybe not..The tunnel protocol is now up, but the routers still cannot ping each other

[Julio E. Moisa]

Hi,

No worries my friend, let me lab your config and share it with you.

:-)

[jasonbutryn]

But the Tunnel11 Protocol is still down.