+ <dt><code>00:00:5e:00:01:<var>x</var><var>x</var></code></dt>
+ <dd> VRRP IPv4 virtual router MAC address. </dd>
+
+ <dt><code>00:00:5e:00:02:<var>x</var><var>x</var></code></dt>
+ <dd> VRRP IPv6 virtual router MAC address. </dd>
+
+ <dt><code>00:00:0c:07:ac:<var>x</var><var>x</var></code></dt>
+ <dd> HSRP Version 1. </dd>
+
+ <dt><code>00:00:0c:9f:f<var>x</var>:<var>x</var><var>x</var></code>
+ </dt>
+ <dd> HSRP Version 2. </dd>
+
+ <dt><code>00:07:b4:<var>x</var><var>x</var>:<var>x</var><var>x</var>:<var>x</var><var>x</var></code></dt>
+ <dd> GLBP. </dd>
+