rjberke@berke.dseg.ti.com (Richard_Berke) (05/03/91)
I've been trying to mount an NFS disk space using a SUN/4 as reqeustor across a PC serving as a local router (running KA9Q NOS), with MVS TCP/IP from IBM as the server. I'm using IBM's client authenticator program 'mvslogin', compiled and executing on the SUN. The mvslogin attempts never succeed. The same stations are able to interoperate on the same path for telnet and FTP without any apparent barriers. On the attempts at mvslogin, the SUN says RPC: port mapper failure - RPC: timed out. My MVS support person claims there's never contact with his MVS system (he may not know where to look.) A LANWatch trace shows clearly the SUN requesting: UDP: 922 -> Sun-RPC(111) Sun RPC: XID: 282ea0ee Call: prog: 100000 ver: 2 proc: 3 The other half of the traffic are packets from the PC/router's ethernet address, with the MVS system's IP address inside, and what appears to be a rejection that the MVS system doesn't know what to do with the request. ICMP: Type: port_unreachable(0x0303) Packet that caused error: [...repeat of the packet the SUN sent out]. The SUN tries three times, then quits and displays his message. I'm trying to get my understanding verified or corrected: KA9Q NOS acts as an IP router. If frames are aimed at/through him, he will route them faithfully, without regard for whether the requestor wants the ultimate destination to engage in a TCP session (telnet, FTP, mail, etc.) or some UDP action (NFS, for example.) Am I missing or misunderstanding something here? It sure feels as if the MVS system is not yet enabled to 'hear' and respond with any RPC processing and that the router is correctly passing along the client's request and the MVS's rejection of service. Does the ICMP response packet come from KA9Q? or from my MVS system? It feels like (seeing MVS' IP address within the packet) that it's not the router generating the response; he passes the response generated by MVS. Thanks in advance for clarifications, Richard Berke Texas Instruments richard@berke.dseg.ti.com PO Box 869305, MS 8428 /admd=mci/c=us/prmd=ti/pn=Richard.Berke Plano, TX 75086 214-575-2828 ------------------------------------------------------------------------------