Static Route; Introduction To Static Route; Introduction To Default Route - Edge-Core ES4626 User Manual

Displayed information
route-map a, deny, sequence 10
Match clauses:
as-path 60
Set clauses:
metric 10

17.3 Static Route

17.3.1 Introduction to Static Route

As mentioned earlier, the static route is the manually specified path to a network or a
host. Static route is simple and consistent, and can prevent illegal route modification, and
is convenient for load balance and route backup. However, it also has its own defects.
Static route, as its name indicates, is static, it won't modify the route automatically on
network failure, and manual configuration is required on such occasions, therefore it is
not suitable for mid and large-scale networks.
Static route is mainly used in the following two conditions: 1) in stable networks to
reduce load of route selection and routing data streams. For example, static route can be
used in route to STUB network. 2) For route backup, configure static route in the backup
line, with a lower priority than the main line.
Static route and dynamic route can coexist; layer3 switch will choose the route with
the highest priority according to the priority of routing protocols. At the same time, static
route can be introduced (redistribute) in dynamic route, and change the priority of the
static route introduced as required.

17.3.2 Introduction to Default Route

Default route is a kind of static route, which is used only when no matching route is
found. In the route table, default route in is indicated by a destination address of 0.0.0.0
and a network mask of 0.0.0.0, too. If the route table does not have the destination of a
package and has no default route configured, the package will be discarded, and an
ICMP packet will be sent to the source address indicate the destination address or
Explanation
route-map a means the name of route
map is a, deny means the deny mode,
sequence 10
number is 10
Match sub
Detailed contents in the Match sub
Set sub
Detailed content in the Set clause
429
means the sequence