</dd>
<dt><code>forward-bpdu</code></dt>
<dd>
- Option to allow forwarding of BPDU frames when NORMAL
- action if invoked. Frames with reserved Ethernet addresses
- (e.g. STP BPDU) will be forwarded when this option is enabled.
+ Option to allow forwarding of BPDU frames when NORMAL
+ action if invoked. Frames with reserved Ethernet addresses
+ (e.g. STP BPDU) will be forwarded when this option is enabled.
If the Open vSwitch bridge is used to connect different
- Ethernet networks, and if Open vSwtich node does not run STP,
- then this option should be enabled.
- Default is disabled, set to <code>true</code> to enable.
+ Ethernet networks, and if Open vSwitch node does not run STP,
+ then this option should be enabled.
+ Default is disabled, set to <code>true</code> to enable.
</dd>
</dl>
</column>
connected to. <code>active</code> ports are allowed to initiate LACP
negotiations. <code>passive</code> ports are allowed to participate
in LACP negotiations initiated by a remote switch, but not allowed to
- initiate such negotiations themselves. If unset Open vSwitch will
- choose a reasonable default. </p>
+ initiate such negotiations themselves. Defaults to <code>off</code>
+ if unset. </p>
</column>
</group>
Key-value pairs for configuring rarely used port features. The
currently defined key-value pairs are:
<dl>
- <dt><code>hwaddr</code></dt>
- <dd>An Ethernet address in the form
- <code><var>xx</var>:<var>xx</var>:<var>xx</var>:<var>xx</var>:<var>xx</var>:<var>xx</var></code>.</dd>
<dt><code>bond-rebalance-interval</code></dt>
<dd>For an SLB bonded port, the number of milliseconds between
successive attempts to rebalance the bond, that is, to
configurable transmission interval.
</p>
+ <p>
+ According to the 802.1ag specification, each Maintenance Point should
+ be configured out-of-band with a list of Remote Maintenance Points it
+ should have connectivity to. Open vSwitch differs from the
+ specification in this area. It simply assumes the link is faulted if
+ no Remote Maintenance Points are reachable, and considers it not
+ faulted otherwise.
+ </p>
+
<column name="cfm_mpid">
A Maintenance Point ID (MPID) uniquely identifies each endpoint within
a Maintenance Association. The MPID is used to identify this endpoint
CFM on this <ref table="Interface"/>.
</column>
- <column name="cfm_remote_mpid">
- The MPID of the remote endpoint being monitored. If this
- <ref table="Interface"/> does not have connectivity to an endpoint
- advertising the configured MPID, a fault is signalled. Must be
- configured to enable CFM on this <ref table="Interface"/>
- </column>
-
<column name="cfm_fault">
- Indicates a connectivity fault triggered by an inability to receive
- heartbeats from the remote endpoint. When a fault is triggered on
- <ref table="Interface"/>s participating in bonds, they will be
- disabled.
+ <p>
+ Indicates a connectivity fault triggered by an inability to receive
+ heartbeats from any remote endpoint. When a fault is triggered on
+ <ref table="Interface"/>s participating in bonds, they will be
+ disabled.
+ </p>
+ <p>
+ Faults can be triggered for several reasons. Most importantly they
+ are triggered when no CCMs are received for a period of 3.5 times the
+ transmission interval. Faults are also triggered when any CCMs
+ indicate that a Remote Maintenance Point is not receiving CCMs but
+ able to send them. Finally, a fault is triggered if a CCM is
+ received which indicates unexpected configuration. Notably, this
+ case arises when a CCM is received which advertises the local MPID.
+ </p>
</column>
</group>
<dd> The transmission interval of CFM heartbeats in milliseconds.
Three missed heartbeat receptions indicate a connectivity fault.
Defaults to 1000ms. </dd>
+ <dt><code>cfm_extended</code></dt>
+ <dd> When true, the CFM module operates in extended mode. This causes
+ it to use a nonstandard destination address to avoid conflicting
+ with compliant implementations which may be running concurrently on
+ the network. Furthermore, extended mode increases the accuracy of
+ the <code>cfm_interval</code> configuration parameter by breaking
+ wire compatibility with 802.1ag compliant implementations.
+ Defaults to false.</dd>
<dt><code>bond-stable-id</code></dt>
<dd> A positive integer using in <code>stable</code> bond mode to
make slave selection decisions. Allocating