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GRE Tunnel

arunkumarravi
Level 1
Level 1

arunkumarravi_0-1670230950296.png

IP add of VPC1 is 192.168.1.10 , VPCS 2 is 192.168.2.10

GRE tunnel is configured between R3 and R4.
Tunnel is up and I am able to ping the VPC2 from VPC1 and vice versa, however if I take a capture I couldn't able to see the Tunnel IP being encapsulated.

1 Accepted Solution

Accepted Solutions

you need these two command.

R3
ip route 192.168.1.0 255.255.255.0 184.50.255.193

REMOTE router 
ip rotue 192.168.2.0 255.255.255.0 184.50.255.192

note:- in mid router you dont need these static route 

S 192.168.1.0/24 [1/0] via 4.15.133.218
S 192.168.2.0/24 [1/0] via 23.50.138.134



View solution in original post

12 Replies 12

capture do you use filter ?

No I didn't use any filter.
Other than ICMP no other traffic is generated.

what software you use eve-ng or CML ?

I am using eve-ng

Problem is not the filter or wireshark, I can see the ICMP packets from wireshark but not the actual encapsulated IP.

Ok, 
share the config I will check it 

what I suspect you mistake config the static route 

ip route x.x.x.x y.y.y.y <tunnel destination>    <<<-- this wrong 

you need 

ip route x.x.x.x y.y.y.y <tunnel IP>     <<<- this is right 

the static route to remote peer tunnel IP end shift the traffic to enter the tunnel.

Yeah that's right. may be the route issue.

let me change and check

you need these two command.

R3
ip route 192.168.1.0 255.255.255.0 184.50.255.193

REMOTE router 
ip rotue 192.168.2.0 255.255.255.0 184.50.255.192

note:- in mid router you dont need these static route 

S 192.168.1.0/24 [1/0] via 4.15.133.218
S 192.168.2.0/24 [1/0] via 23.50.138.134



Thanks , it is resolved now.

you are so welcome 

Can you also suggest me how to achieve this with the help of BGP(Instead of static route)

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