There is no ARP in frame-relay. More specifically, on a P2P subinterface, there's no mapping either. The assumption is that if it's not MY address it must be yours. So as long as you believe the other side is within the defined subnet, then you're good.
If you have 10.1.1.1/24 on one side, and 10.1.1.2/27 on the other, they will still talk to each other just fine. At least until you try to run ospf or something that cares about the netmask! Scott -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jesper Skriver Sent: Thursday, July 17, 2008 7:24 AM To: Farhan Jaffer Cc: Juniper Puck; [EMAIL PROTECTED] Subject: Re: [j-nsp] PtP link over FR Let me guess, on Cisco Router A you got an ARP entry for Cisco Router B's address when you put a Cisco router in the middle, as the Cisco router has proxy-arp enabled by default. Or to put it more clearly the IP addresses used FR p2p pvc is a subset of the IP addresses used on the link between Cisco Router A and Juniper Router. Or on Cisco router A you have a static route without a next-hop address to the IP subnet used on the FR link In either case it's a mis configuration, that gets 'saved'/'hidden' by the fact proxy-arp is enabled by default on the Cisco router. /Jesper On Thu, Jul 17, 2008 at 04:06:31PM +0500, Farhan Jaffer wrote: > Hi, > > There is an interesting situation, let me discuss the scenario first, > > Cisco Router A ----(same n/w) ---- Juniper Router -----(FR > point-to-point pvc) ------- Cisco Router B. > > PVC is Active & point to point connectivity is OK. But the ping > response from cisco router A to B via FR is unreachable & vice versa. > > however if i replace Juniper router with Cisco Router, it works fine. > > Is there any IP forwarding like thing? or any other problem. > > Thanks very much in advance. > > -FJ > _______________________________________________ > juniper-nsp mailing list juniper-nsp@puck.nether.net > https://puck.nether.net/mailman/listinfo/juniper-nsp /Jesper -- Jesper Skriver, jesper(at)skriver(dot)dk - CCIE #5456 One Unix to rule them all, One Resolver to find them, One IP to bring them all and in the zone to bind them. _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp
