[c-nsp] GRE between Cisco and Juniper

[Amit Dave]

Hello Ivan,

Here is sample config u can try on Juniper

set interfaces gr-1/2/0 unit 166 clear-dont-fragment-bit
set interfaces gr-1/2/0 unit 166 description "GRE between a and b"
set interfaces gr-1/2/0 unit 166 tunnel source "Source ip on Juniper"
set interfaces gr-1/2/0 unit 166 tunnel destination "Dest IP on Cisco"
set interfaces gr-1/2/0 unit 166 family inet mtu 1420

Interface gr-1/2/0 unit 166 is just the number which u need to set as per ur
Juniper intf available. This number is just for example.

After above configs when u do : show config interface gr-1/2/0/.166 u shud
see

show configuration interfaces gr-1/2/0.166
clear-dont-fragment-bit;
description GRE between a and b;
tunnel {
    source "Source ip on Juniper";
    destination "Dest IP on Cisco";
}
family inet {
    mtu 1420;
}


On Cisco end all u wud need is  :

interface Tunnel0
 description "Gre between a and b"
 ip unnumbered Loopback0
 tunnel source "Source Ip on Cisco"
 tunnel destination "Dest Ip on Juniper"
 ip mtu 1420

Make sure source and dest ips are reachable publically.

I Hope this helps.

Cheers !!!

Amit Dave