On Tue, 16 Mar 2004 10:59:06 +0100 Andre Oppermann <[EMAIL PROTECTED]> wrote:
> Zherdev Anatoly wrote: > > > > Hello. > > > > I have problem with tcp session close between cisco and freebsd > > Looks like that it bug in freebsd tcp stack. > > What version of FreeBSD and Cisco IOS do you run on these machines? OOPS. Sorry :( FreeBSD 4.9-STABLE cvsupped March 3 Cisco IOS 12.2.19a ip only Cisco 5300 > > -- > Andre > > > > CISCO state: > > > > sh tcp brief > > 62935208 CISCO..990 FREEBSD.513 FINWAIT1 > > > > FreeBSD state: > > > > netstat -an > > tcp4 57352 0 FREEBSD.513 CISCO.990 ESTABLISHED > > > > TCP session from cisco side: > > > > IP: s=CISCO (local), d=FREEBSD (FastEthernet0), len 41, > > sending TCP src=990, dst=513, seq=1411875745, ack=880111139, win=3983 ACK > > PSH FIN > > > > IP: s=FREEBSD (FastEthernet0), d=CISCO (FastEthernet0), len > > 40, rcvd 3 TCP src=513, dst=990, seq=880111139, ack=1411875745, win=0 ACK > > > > IP: s=CISCO (local), d=FREEBSD (FastEthernet0), len 41, > > sending TCP src=990, dst=513, seq=1411875745, ack=880111139, win=3983 ACK > > PSH FIN > > > > IP: s=FREEBSD (FastEthernet0), d=CISCO (FastEthernet0), len > > 40, rcvd 3 TCP src=513, dst=990, seq=880111139, ack=1411875745, win=0 ACK > > > > .... > > > > TCP session from FreeBSD side: > > > > 12:16:25.426584 IP CISCO.990 > FREEBSD.login: FP 1411875745:1411875746(1) ack > > 880111139 win 3714 > > > > 12:16:25.426675 IP FREEBSD.login > CISCO.990: . ack 1411875745 win 0 > > > > 12:16:35.121888 IP CISCO.990 > FREEBSD.login: FP 1411875745:1411875746(1) ack > > 880111139 win 3714 > > > > 12:16:35.121976 IP FREEBSD.login > CISCO.990: . ack 1411875745 win 0 > > > > .... > > > > CISCO send ACK on FreeBSD pocket and send FIN. FreeBSD send ACK with seq w/o > > changes win=0 (!) and ack=cisco_seq.Cisco wait ack=cisco_seq+1 on FIN but FreeBSD > > box don't send this and cisco retransmit FIN. > > > > -- > > Zherdev Anatoly. > > _______________________________________________ > > [EMAIL PROTECTED] mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-net > > To unsubscribe, send any mail to "[EMAIL PROTECTED]" > > -- Zherdev Anatoly. _______________________________________________ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
