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@@ -1,6 +1,6 @@
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.\"/*
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.\" * Copyright (c) 2005 MontaVista Software, Inc.
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-.\" * Copyright (c) 2006-2024 Red Hat, Inc.
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+.\" * Copyright (c) 2006-2025 Red Hat, Inc.
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.\" *
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.\" * All rights reserved.
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.\" *
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@@ -32,7 +32,7 @@
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.\" * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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.\" * THE POSSIBILITY OF SUCH DAMAGE.
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.\" */
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-.TH COROSYNC_CONF 5 2024-07-22 "corosync Man Page" "Corosync Cluster Engine Programmer's Manual"
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+.TH COROSYNC_CONF 5 2025-05-13 "corosync Man Page" "Corosync Cluster Engine Programmer's Manual"
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.SH NAME
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corosync.conf - corosync executive configuration file
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@@ -172,7 +172,16 @@ are used, mcastaddr has higher priority.
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.TP
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mcastport
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-This specifies the UDP port number. It is possible to use the same multicast
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+This specifies the UDP port number. Exact meaning depends on used transport.
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+
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+For the KNET transport, it is used as both the binding and sending port. For
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+additional links, the default value is computed as (mcastport + linknumber).
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+
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+For the UDPU transport, mcastport specifies the bind port. Corosync also
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+allocates and binds a random sending port for each remote node.
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+
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+For the UDP transport, it is used as a bind port for mcastaddr.
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+It is possible to use the same multicast
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address on a network with the corosync services configured for different
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UDP ports.
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Please note corosync uses two UDP ports mcastport (for mcast receives) and
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Jan Friesse