Ospf Network Adjustment And Optimization - Huawei Quidway S5600 Series Operation Manual

Operation Manual – Routing Protocol
Quidway S5600 Series Ethernet Switches-Release 1510
Configure the default cost
for OSPF to import external
routes
Configure
maximum
external routes imported by
OSPF per unit time.
Configure the default tag
for OSPF to import external
routes
Configure the default type
of external routes that
OSPF will import
Note:
The import-route command cannot import the default route. To import the default
route, you must use the default-route-advertise command.
The filtering of advertised routes by OSPF means that OSPF only converts the
external routes meeting the filter criteria into Type-5 or Type-7 LSAs and advertises
them.
When enabling OSPF to import external routes, you can also configure the defaults
of some additional parameters, such as cost, number of routes, tag, and type. A
route tag can be used to identify protocol-related information.

4.7 OSPF Network Adjustment and Optimization

You can adjust and optimize an OSPF network in the following aspects:
By changing the OSPF packet timers, you can adjust the convergence speed of
the OSPF network and the network load brought by OSPF packets. On some
low-speed links, you need to consider the delay experienced when the interfaces
transmit LSAs.
By Adjusting SPF calculation interval, you can mitigate resource consumption
caused by frequent network changes.
In a network with high security requirements, you can enable OSPF authentication
to enhance OSPF network security.
Operation
default cost value
the default
number of
default limit routes
default tag tag
default type { 1 | 2 }
Huawei Technologies Proprietary
Command
4-19
Chapter 4 OSPF Configuration
Description
Optional
By default, the cost for
OSPF to import external
routes is 1.
Optional
By default, a maximum
of 1000 routes can be
imported.
Optional
The default tag is 1 if it is
not set by using this
command.
Optional
By default, the type of
imported external routes
is Type-2.