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26 Release Note
Software Release 2.3.1
C613-10325-00 REV B
VRRP Port Monitoring
Virtual Router Redundancy Protocol (VRRP) is now able to monitor ports in
the VLAN over which it is running, and reduce the priority of the router or
switch if ports in the VLAN fail.
Ports that are part of a VLAN over which a VR is running can be monitored to
detect port failure. This is known as port monitoring. Port monitoring ensures
that if a port fails, or is disabled, the VRRP priority will be reduced either by a
configured step value or by an amount that reflects the proportion of the
VLAN’s ports that are out of service. If the router is the master, and a backup
router has a higher priority, the backup router pre-empts the master and
becomes the new master.
Port monitoring is a way of implementing a connectivity metric. If the
connectivity to the VLAN changes, the router will drop its priority either
proportionally or by a certain amount by using the STEPVALUE parameter of
the following command:
SET VRRP=vr-identifier [PORTMONITORING={ON|OFF}]
[STEPVALUE={stepvalue|PROPORTIONAL}]
If the stepvalue option is specified, the priority of the VR will be reduced by this
value each time a VLAN port fails or is disabled.
Table 6: New parameters in the output of the SHOW FIREWALL POLICY COUNTER
command.
Parameter Meaning
HTTP Proxy Filter File Name of a text file containing a list of domain names, URLs,
keywords and cookie domain filters that are not allowed to
pass through HTTP proxies configured under this policy. This
parameter is only shown if a URL filter file has been
specified for this policy.
Cookies Indicates whether or not cookies are allowed to pass
through HTTP proxies configured under this policy. If
“enabled” is shown all cookies are permitted unless
specifically denied by an entry in the HTTP proxy filter file. If
“disabled” is shown no cookies are permitted. This
parameter is only shown if an HTTP proxy has been
configured for this policy with direction set to “out” or
“both”.
Sessions Handled The number of TCP sessions that have been handled by the
proxy.
URL Denies The number of times a match to a requested URL has been
found in the HTTP proxy filter file resulting in the request
being denied.
URL Allows The number of times a match to a requested URL has been
found in the HTTP proxy filter file resulting in the request
being allowed.
Cookie Denies The number of times a match to a domain or URL
requesting the setting of a cookie has been found in the
HTTP proxy filter file resulting in the request being denied.