X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=vswitchd%2Fovs-vswitchd.conf.5.in;h=431e20b9cfee3b26584850d2e2c5899225904fe3;hb=d1a328a65d0bb3fdad0aed346e48cc8b4c590f5f;hp=665d3d0419589dc9d721952ed16085ad6f4e9cdf;hpb=a5e54d9b6f8002f34cc792df69e6eda68cf95223;p=openvswitch diff --git a/vswitchd/ovs-vswitchd.conf.5.in b/vswitchd/ovs-vswitchd.conf.5.in index 665d3d04..431e20b9 100644 --- a/vswitchd/ovs-vswitchd.conf.5.in +++ b/vswitchd/ovs-vswitchd.conf.5.in @@ -71,11 +71,23 @@ in the bridge, by specifying it as one of the values for key included, then its MAC address is by default the lowest-numbered MAC address among the other bridge ports, ignoring other internal ports and bridge ports that are -used as port mirroring destinations (see \fBPort Mirroring\fR, below). To -use a specific MAC address instead, set \fBbridge.\fIname\fB.mac\fR to -a MAC address in the format +used as port mirroring destinations (see \fBPort Mirroring\fR, below). +For this purpose, the MAC of a bonded port (see \fBNetwork Device +Bonding\fR, below) is by default the MAC of its slave whose name is first in +alphabetical order. +There are two ways to modify this algorithm for selecting the MAC +address of the local port: +.IP \(bu +To use a specific MAC address for the local port, set +\fBbridge.\fIname\fB.mac\fR to a MAC address in the format \fIxx\fB:\fIxx\fB:\fIxx\fB:\fIxx\fB:\fIxx\fB:\fIxx\fR, where each -\fIx\fR is a hex digit. If no valid MAC address can be determined +\fIx\fR is a hex digit. +.IP \(bu +To override the MAC of a port for the purpose of this algorithm, set +\fBport.\fIport\fB.mac\fR to a MAC address in the format described +above. +.PP +If no valid MAC address can be determined either of these ways, then a MAC address is randomly generated. .PP The following syntax defines a bridge named \fBmybr\fR, configured @@ -254,6 +266,22 @@ a trunk port, the frame's VLAN tag will be set to \fIvid\fR, replacing any existing tag; when it is sent out an implicit VLAN port, the frame will not be tagged. This type of mirroring may be referred to as RSPAN. +.IP +Please note that mirroring to a VLAN can disrupt a network that +contains unmanaged switches. Consider an unmanaged physical switch +with two ports: port 1, connected to an end host, and port 2, +connected to an Open vSwitch configured to mirror received packets +into VLAN 123 on port 2. Suppose that the end host sends a packet on +port 1 that the physical switch forwards to port 2. The Open vSwitch +forwards this packet to its destination and then reflects it back on +port 2 in VLAN 123. This reflected packet causes the unmanaged +physical switch to replace the MAC learning table entry, which +correctly pointed to port 1, with one that incorrectly points to port +2. Afterward, the physical switch will direct packets destined for +the end host to the Open vSwitch on port 2, instead of to the end host +on port 1, disrupting connectivity. If mirroring to a VLAN is desired +in this scenario, then the physical switch must be replaced by one +that learns Ethernet addresses on a per-VLAN basis. .ST "Example" The following \fBovs\-vswitchd\fR configuration copies all frames received on \fBeth1\fR or \fBeth2\fR to \fBeth3\fR. @@ -363,7 +391,7 @@ The specified TCP \fIport\fR (default: 6633) on the host at the given .PP The maximum time between attempts to connect to the controller may be specified in integral seconds with the \fBmgmt.max-backoff\fR key. The -default maximum backoff is 15 seconds, and the minimum value is 1 +default maximum backoff is 8 seconds, and the minimum value is 1 second. An inactivity probe may be configured with the \fBmgmt.inactivity-probe\fR @@ -371,7 +399,7 @@ key. If \fBovs\-vswitchd\fR does not communicate with the controller for the specified number of seconds, it will send a probe. If a response is not received for an additional amount of that time, \fBovs\-vswitchd\fR assumes the connection has been broken and attempts to reconnect. The default -is 15 seconds, and the minimum value is 5 seconds. +and minimum values are both 5 seconds. A management id may be specified with the \fBmgmt.id\fR key. It takes an id in the form of exactly 12 hexadecimal digits. If one is not @@ -495,7 +523,8 @@ the connection to the controller stays down long enough, no packets can pass through the switch at all. .IP The first of these that is set takes effect. -If the value is \fBstandalone\fR, \fBovs\-vswitchd\fR will take over +If the value is \fBstandalone\fR, or if neither of these settings +is set, \fBovs\-vswitchd\fR will take over responsibility for setting up flows when no message has been received from the controller for three times the inactivity probe interval (see above). In this mode, @@ -504,9 +533,8 @@ MAC-learning switch. \fBovs\-vswitchd\fR will continue to retry connecting to the controller in the background and, when the connection succeeds, it discontinues its standalone behavior. .IP -If this option is set to \fBsecure\fR, or if neither of these settings -is set, \fBovs\-vswitchd\fR will not set up flows on its own when the -controller connection fails. +If this option is set to \fBsecure\fR, \fBovs\-vswitchd\fR will not +set up flows on its own when the controller connection fails. .IP "\fBbridge.\fIname\fB.controller.max-backoff=\fIsecs\fR" Sets the maximum time between attempts to connect to the controller to \fIsecs\fR, which must be at least 1. The actual interval between