Routing Management Policy - 3Com 7757 Configuration Manual

3com switch 7750 family

Hide thumbs Also See for 7757:

Table of Contents

Routing Management

Routing Protocols and

Destination Network

The Switch 7750 Ethernet Switches (hereinafter referred to as the Switch 7750)

support the configuration of static routes as well as a series of dynamic routing

protocols such as RIP, OSPF and BGP. Moreover, the switches in operation can

automatically obtain some direct routes according to interface status and user

configuration.

On a Switch 7750, you can manually configure a static route to a certain

destination, or configure a dynamic routing protocol to make the switch interact

with other routers in the internetwork and find routes by routing algorithm. On a

Switch 7750, the static routes configured by the user and the dynamic routes

discovered by routing protocols are managed uniformly. The static routes and the

routes learned or configured by different routing protocols can also be shared

among routing protocols.

Different routing protocols may discover different routes to the same destination,

but only one route among these routes and the static routes is optimal. In fact, at

any given moment, only one routing protocol can determine the current route to a

specific destination. Routing protocols (including static routing) are endowed with

different preferences. When there are multiple routing information sources, the

route discovered by the routing protocol with the highest preference will become

the current route. Routing protocols and their default route preferences (the

smaller the value, the higher the preference is) are shown in Table 210.

In the table, "0" is used for directly connected routes, and "255" is used for

routes from untrusted source.

Table 210 Routing protocols and corresponding route preferences

Routing protocol or type

Routing Management Policy

Preference of the corresponding route

7750 7758 7754