Region : UnitedStates

Model : TL-R470T+

Hardware Version : V2

Firmware Version : 5.1.0 Build 20120510 Rel.58982s

ISP : Comcast

I have a TL-R470 up and running. Internet access works fine if I connect a client directly to the TL-R470.

However, when I put a Juniper router between the TL-R470 and the PC then packets do not flow to the PC. Here is an outline of the network:

Comcast <---> TL-R470 <---DMZ---> Juniper Router <---internal network---> PC

DMZ = 172.31.0.0/24, TL-R470 LAN address is 172.31.0.250, Juniper address is 172.31.0.1 (ge-0/0/1)

Internal = 10.3.53.0/24, Juniper address is 10.3.53.1 (ge-0/0/0), PC address is anything on 10.3.53.0/24

A static route is in TL-R470, which is:

10.3.53.0 255.255.255.0 172.31.0.1 LAN 0 Active

A static default route is in the Juniper to send all traffic to 172.31.0.250.

routing-options {
static {
route 0.0.0.0/0 {
next-hop 172.31.0.250;
retain;
}
}
}

I have watched (via Wireshark) the packets on both sides of the TL-R470 and connections/packets initiated from the internal network are not processed. They are not sent on to the Internet (Comcast) by the TL-R470. I have verified they are being sent to TL-R470 but they seem to be ignored.

I have turned off "Enable ARP Spoofing Defense" to make sure the TL-R470 is not limiting packets since all the packets to the TL-R470 will have the same MAC (juniper) but will have different IPs (of the clients on the internet network).

Lastly, I have verified this works fine when a different broadband router or linux router is used.

Any suggestions is greatly appreciated!!

Evan