[j-nsp] GRE Between Juniper and Cisco

[Erdem Sener]

Hi,

 How are these boxes are connected to each other?

 In first guess, it seems the problem is in some kind of switch between them.

HTH

On 10/19/06, Ranjit Bahad <Ranjit_Bahad at inmarsat.com> wrote:
> Hi,
>
>
>
> I have a link services pic installed in a M10 and have configured a GRE
> tunnel from this box to a Cisco router.
>
>
>
> Below are the configs:
>
>
>
> Juniper:
>
>
>
>   gr-1/0/0 {
>
>        unit 10 {
>
>            tunnel {
>
>                source 172.30.9.2;
>
>                destination 172.30.12.2;
>
>            }
>
>            family inet {
>
>                mtu 1514;
>
>                address 1.1.1.1/24;
>
>            }
>
>        }
>
>    }
>
>
>
> show interfaces gr-1/0/0
>
> Physical interface: gr-1/0/0, Enabled, Physical link is Up
>
>  Interface index: 147, SNMP ifIndex: 69
>
>  Type: GRE, Link-level type: GRE, MTU: Unlimited, Speed: 800mbps
>
>  Device flags   : Present Running
>
>  Interface flags: Point-To-Point SNMP-Traps
>
>  Input rate     : 0 bps (0 pps)
>
>  Output rate    : 0 bps (0 pps)
>
>
>
>  Logical interface gr-1/0/0.10 (Index 105) (SNMP ifIndex 86)
>
>    Flags: Point-To-Point SNMP-Traps 16384
>
>    IP-Header 172.30.12.2:172.30.9.2:47:df:64:0000000000000000
> Encapsulation: GRE-NULL
>
>  Input packets : 26
>
>  Output packets: 29
>
>    Protocol inet, MTU: 1514
>
>      Flags: User-MTU
>
>      Addresses, Flags: Is-Preferred Is-Primary
>
>        Destination: 1.1.1/24, Local: 1.1.1.1, Broadcast: 1.1.1.255
>
>
>
> Cisco:
>
>
>
> sh int tunnel 10
>
> Tunnel10 is up, line protocol is up
>
>  Hardware is Tunnel
>
>  Internet address is 1.1.1.2/24
>
>  MTU 1514 bytes, BW 9 Kbit, DLY 500000 usec,
>
>     reliability 255/255, txload 1/255, rxload 1/255
>
>  Encapsulation TUNNEL, loopback not set
>
>  Keepalive not set
>
>  Tunnel source 172.30.12.2, destination 172.30.9.2, fastswitch TTL 255
>
>  Tunnel protocol/transport GRE/IP, key disabled, sequencing disabled
>
>  Tunnel TTL 255
>
>  Checksumming of packets disabled, fast tunneling enabled
>
>  Last input 00:09:41, output 00:05:06, 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: fifo
>
>  Output queue: 0/0 (size/max)
>
>  5 minute input rate 0 bits/sec, 0 packets/sec
>
>  5 minute output rate 0 bits/sec, 0 packets/sec
>
>  L2 Switched: ucast: 0 pkt, 0 bytes - mcast: 0 pkt, 0 bytes
>
>  L3 in Switched: ucast: 0 pkt, 0 bytes - mcast: 0 pkt, 0 bytes mcast
>
>  L3 out Switched: ucast: 0 pkt, 0 bytes mcast: 0 pkt, 0 bytes
>
>     3 packets input, 888 bytes, 0 no buffer
>
>     Received 0 broadcasts (0 IP multicasts)
>
>     0 runts, 0 giants, 0 throttles
>
>     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
>
>     36 packets output, 4012 bytes, 0 underruns
>
>     0 output errors, 0 collisions, 0 interface resets
>
>     0 output buffer failures, 0 output buffers swapped out
>
> AMCORRTR02#
>
> AMCORRTR02#
>
> AMCORRTR02#sh run int tun
>
> AMCORRTR02#sh run int tunnel 10
>
> Building configuration...
>
>
>
> Current configuration : 118 bytes
>
> !
>
> interface Tunnel10
>
>  ip address 1.1.1.2 255.255.255.0
>
>  tunnel source 172.30.12.2
>
>  tunnel destination 172.30.9.2
>
> end
>
>
>
> Neither end of the tunnel can ping each other. Pinging the physical IP's
> of each host router is ok. Any help will be greatly appreciated!
>
>
>
> Thanks,
>
>
>
> Raj.
>
>
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-- 
Erdem