I have two sites that are connected through an MPLS tunnel. On-Site A, I have a Linux machine and on Site B, we have multiple servers.

Now the problem is, when I am trying to ping from Site B to Site A(from server-->linux machine), it is working properly.

But, when I try pinging from Site A to B (from Linux to servers), it's dropping.

I used traceroute and the packet is dropping on first-hop only.

[root@localhost ~]# traceroute 10.100.10.1
traceroute to 10.100.10.1 (10.100.10.1), 30 hops max, 60 byte packets
 1  * * *
 2  * * *
 3  * * *
 4  * * *
 5  * * *
 6  * * *
 7  * * *
 8  * * *
 9  * * *
10  * * *
11  * * *
12  * * *
13  * * *
14  * * *
15  * * *
16  * * *^C