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authorKenjiro Cho <kjc@cvs.openbsd.org>2002-05-16 14:13:45 +0000
committerKenjiro Cho <kjc@cvs.openbsd.org>2002-05-16 14:13:45 +0000
commitbc6f42d58d4b39c68d76575d8aaa1fc693beddc8 (patch)
treec71a040e5ed5e6191433c7ceb29b4e24ee1f19bb /share/man/man4
parentb0681ff14398e9fc13c6ca3bdfb5f07c3f8fd97d (diff)
add an entry for TCP_ECN.
Diffstat (limited to 'share/man/man4')
-rw-r--r--share/man/man4/options.411
1 files changed, 10 insertions, 1 deletions
diff --git a/share/man/man4/options.4 b/share/man/man4/options.4
index 193da8d8533..bbac26860ee 100644
--- a/share/man/man4/options.4
+++ b/share/man/man4/options.4
@@ -1,4 +1,4 @@
-.\" $OpenBSD: options.4,v 1.99 2002/05/07 08:15:53 miod Exp $
+.\" $OpenBSD: options.4,v 1.100 2002/05/16 14:13:44 kjc Exp $
.\" $NetBSD: options.4,v 1.21 1997/06/25 03:13:00 thorpej Exp $
.\"
.\" Copyright (c) 1998 Theo de Raadt
@@ -790,6 +790,15 @@ outstanding data during the fast recovery phase by using
information.
This option can only be used together with
.Em TCP_SACK .
+.It Cd option TCP_ECN
+Turns on Explicit Congestion Notification (RFC3168).
+.Em ECN
+allows intermediate routers to use the Congestion Experienced
+codepoint in the IP header as an indication of congestion, and allows
+TCP to adjust the trasmission rate using this signal.
+Both communication endpoints negotiate enabling
+.Em ECN
+functionality at the TCP connection establishment.
.It Cd option TCP_SIGNATURE
Turns on support for the TCP MD5 Signature option (RFC 2385).
This is used by