Chapter 9: Configuring Unicast Routing on the SSR
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CoreWatch User’s Manual
the SSR's subnetwork. You could also configure the SSR to not accept RIP data from the
subnetwork but to accept RIP packets from the other RIP router.
In the IP environment, RIP bases routing on a hop count. RIP only supports routes that
have 0 to 15 hops. You can configure the SSR to adjust hop counts. Doing so lets you
control which routes the SSR prefers to use to send or receive data when it is
communicating with another RIP router.
What Is Preference?
Preference is the value the SSR uses to determine the preference of routes from one
protocol or peer over another. You can set preference based on one network interface over
another, from one protocol over another, or from one remote gateway over another. A
default preference is assigned to each source from which the SSR receives routes.
Preference values range from 0 to 255 with the lowest number indicating the most
preferred route.
Preference may not be used to control the selection of routes within RIP or another
Interior Gateway Protocol (IGP) because that is accomplished automatically by the
protocol’s metric.
Preference may be used to select routes from an Exterior Gateway Protocol (EGP), such as
the Border Gateway Protocol (BGP), learned from different peers or autonomous systems.
As shown in the following table you can set preference in several places. The table
identifies each item on which you can set preference and identifies the default preference
value of each item. For details on setting the preference of static routes, see
“Defining
Static Route Entries” on page 135
. For details on setting the preference of RIP routes, see
“Setting RIP Global Parameters” on page 139
. For details on setting the preference of all
other items, see the
SmartSwitch Router Command Line Interface Reference Manual
.
Table 12. Preferences and default values
Preference
Default
Directly connected networks
0
Open Shortest Path First (OSPF) routes
10
Static routes
60
RIP routes
100
Point-to-point interfaces
110
Routes to interfaces that are down
120
Summary of Contents for SSR-GLX19-02
Page 1: ...CoreWatch User s Manual 9032564 04...
Page 2: ...Notice 2 CoreWatch User s Manual...
Page 20: ...Preface 20 CoreWatch User s Manual...
Page 64: ...Chapter 5 Changing System Settings 64 CoreWatch User s Manual...
Page 86: ...Chapter 6 Configuring SSR Bridging 86 CoreWatch User s Manual...
Page 106: ...Chapter 7 Configuring VLANs on the SSR 106 CoreWatch User s Manual...
Page 206: ...Chapter 12 Configuring QoS on the SSR 206 CoreWatch User s Manual...
Page 246: ...Chapter 13 Configuring Security on the SSR 246 CoreWatch User s Manual...
Page 363: ...CoreWatch User s Manual 363 Chapter 16 Configuring Routing Policies on the SSR 9 Click OK...
Page 364: ...Chapter 16 Configuring Routing Policies on the SSR 364 CoreWatch User s Manual...
Page 370: ...Chapter 17 Checking System Status 370 CoreWatch User s Manual...
Page 390: ...Chapter 18 Monitoring Real Time Performance 390 CoreWatch User s Manual...
Page 396: ...Chapter 19 Checking the Status of Bridge Tables 396 CoreWatch User s Manual...
Page 430: ...Chapter 20 Checking the Status of Routing Tables 430 CoreWatch User s Manual...
Page 442: ...Chapter 22 Obtaining Reports 442 CoreWatch User s Manual...
Page 456: ...Appendix B CoreWatch Menus 456 CoreWatch User s Manual...