From a305be43e9f19927a168c6d2b0b188199d8e38cb Mon Sep 17 00:00:00 2001 From: Philippe Guibert Date: Wed, 28 Nov 2018 14:26:15 +0100 Subject: [PATCH] doc: add ldp information over transport connection transport connection prefers ipv6, unless ipv4 is explicitly configured on ldp. Signed-off-by: Philippe Guibert --- doc/user/ldpd.rst | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/doc/user/ldpd.rst b/doc/user/ldpd.rst index 8d88ef176..85d280343 100644 --- a/doc/user/ldpd.rst +++ b/doc/user/ldpd.rst @@ -151,6 +151,16 @@ LDP Configuration HOLDTIME value ranges from 1 to 65535 seconds. Default value is 15 seconds. That value is added as a TLV in the LDP messages. +.. index:: [no] dual-stack transport-connection prefer ipv4 +.. clicmd:: [no] dual-stack transport-connection prefer ipv4 + + When *ldpd* is configured for dual-stack operation, the transport connection + preference is IPv6 by default (as specified by :rfc:`7552`). On such + circumstances, *ldpd* will refuse to establish TCP connections over IPv4. + You can use above command to change the transport connection preference to + IPv4. In this case, it will be possible to distribute label mappings for + IPv6 FECs over TCPv4 connections. + .. _show-ldp-information: Show LDP Information -- 2.39.5