Input-list Ĭlearly I have misunderstood something here. The configuration of my loopback interface is fairly straightforward: + = Active Route, - = Last Active, * = Both Router-peering.inet.0: 10668 destinations, 10674 routes (10668 active, 0 holddown, 0 hidden) Here's part of the vr-send-to-peering-provider policy that imports routes which exposes (among other things) the loopback interface to the router-peering instance. Instance-import vr-send-to-peering-provider Peering or Transit) are received by the loopback, but return the ping as from an address associated with the physical interface (either the IRB or Physical interface - whichever is the egress for the return packet).įor the routing instance peering, I have the following (abbreviated): Pings that come via one of the other routing tables (i.e. Routers/Switches that are within the Master Routing instance can ping 123.0.0.1/32 and get 123.0.0.1/32 as the source of the return packets.Ģ. Let's say the loopback is on 123.0.0.1/32 (not its actual address).ġ. Additional Tables for Peering, Transit and additional ones for special cases where I need to get subsets of either Transit or Peering to other customers.Īll of this works very well, however I'm experiencing something I can't explain with a loopback interface I have configured. On 192.168.1.36 I can ping the loopback and the source machine. If you want to use the R2s loopback to translate your R1s LANs try with. I am not allow to change the ip nat inside (on Fa0/0) and ip nat outside (on Fa1/0) on R2. The default Master Routing table is used for Interior Routing.Ģ. When R1ping to loopback0 on R2 and R3 will reply to the ping. The IP addresses of the loopback interface are 127.0.0.1 and ::1 in IPv4 and IPv6, respectively. If the loopback interface replies to ping messages, the TCP/IP protocol stack is properly configured. I am currently working with a pair of MX80s on 11.2r7.4 and am using multiple Routing Instances for the first time.ġ. To test whether the TCP/IP stack is properly implemented on the local system, you can send a ping request to the loopback interface.
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