DSMITH@OREGON.UOREGON.EDU (Dale Smith) (05/03/88)
What is the current "correct" value to place for the TTL field? Can someone with a Sequent Balance 21000 verify what the initial TTL value is for TCP, UDP, and ICMP packets? The reason for this query is that I am having problems delivering mail to uunet.uu.net which is a Sequent Balance 21000. I have observed TCP packets from uunet.uu.net being dropped by my gateway because the TTL was 0. This seems to only happen for TCP traffic. I can ping uunet and get response of 1-2 seconds. I can use nslookup to query uunet.uu.net using datagram (UPD) mode. However, use of any TCP based service to uunet causes lots of TCP packets from uunet to be dropped at my gateway with TTL = 0. I have captured and looked at the UDP and ICMP packets from uunet and they have different, but adequately large TTL values. The folks at uunet say they are running some beta version of TCP/IP. So, is there anyone out there from Sequent who can verify that this is or is not a known problem? Can someone with a Balance 21000 who is running beta-version TCP software look at what the initial TTL value is? Thanks, Dale Smith, Assistant Director of Network Services Internet: dsmith@oregon.uoregon.edu BITNET: dsmith@oregon.bitnet Voice: (503) 686-4394 USmail: University of Oregon Computing Center Eugene, OR 97403-1212