
Configuring Services Settings 89
P0910464 Issue 01 Enterprise Edge Networking Operations Guide
Route
Announcement
Interval
Lets users specify, in seconds, the time interval between route
announcements.
Route Tag Lets users create a special tag that is included in routes announced over the
interface. This helps identify route packets while debugging routing problems
using a network sniffer.
Poisoned Reverse Lets users enable poison reverse.
The choices are:
Actual: the actual, original RIP updates are performed over this interface. All
the routes learned through this interface are also included as is in the RIP
updates sent over this interface. This leads to mutually deceiving route
updates that require multiple routing updates that is termed 'counting to
infinity' in RIP terms.
Split: in the routing updates sent over this interface, router does not include
the routes learned over this interface. This mode performs better than Actual,
but still requires significant amount of time to converge routes. It requires all
routes corresponding to an unreachable network expire before removing them
from the routing table
Poison Reverse: in the routing updates sent over this interface, the router
includes the routes learned over this interface, but 'poisoned metrics'. All
metric values are set to RIP infinity (16) for the routes learned through this
interface. This results in the fastest convergence.
Triggered
Updates
Lets users enable triggered updates, or immediate route update
announcements whenever a metric or other parameter changes in the route
table entries.
If triggered updates are enabled, the changes are gathered for the interval
specified in the global parameter Triggered Update Interval and then sent over
this interface. Triggered updates results in more frequent, smaller RIP
updates.
Announce
Default Route
Lets users enable or disable announcing default routes in incoming route
announcements. Use caution when enabling this feature as improper
configuration causes a loss of network connectivity. Default routes are always
set statically on the router.
Accept Default
Route
Lets users enable or disable accepting incoming default routes.
Set default routes as static routes. If you are run Net Link Manager to
automatically backup primary WAN link using a dial-up link, it manages the
default routes and the default routes that you add are non-operational as soon
as a link breaks or comes up.
Setting Definition
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