Configuring the Control Module and System Timing
Providing a basic system IP configuration
Stinger® MS+ Getting Started Guide
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regardless of which control modules is functioning as the primary control module for
the chassis, the unit can be accessed through the same soft interface address.
When power is applied to the system, the soft IP interface address is not initialized
until a control module assumes the role of primary control for the Stinger unit. The
Ethernet interface of the primary control module can then respond to ARP requests
for the soft IP interface address in addition to requests for its own IP address, which
was previously configured. If the secondary control module becomes primary, the
system reinitializes the soft IP interface address to the Ethernet interface of the new
primary control module.
The soft IP interface is configured in the IP-Interface profile with the zero index.
The following commands set the soft interface IP address to 1.1.1.128/24:
admin> read ip-interface {{ 0 0 0 }}
IP-INTERFACE/{ { any-shelf any-slot 0 } 0 } read
admin> set ip-addr = 1.1.1.128/24
admin> write
IP-INTERFACE/{ { any-shelf any-slot 0 } 0 } written
Configuring a default route
A default route is a static route that specifies a destination for addresses that are not
on the local network and to which a known route does not exist. The default route is
generally the IP address of an external router that has more route information about
how specific destinations can be reached. When the default route is configured, the
Stinger unit routes all IP packets with unknown destinations to the specified external
router. If no default route is defined, the unit drops IP packets for which it has no
route.
Figure 5-6 shows the Stinger Ethernet interface on a subnet, connected to the same
Ethernet segment as a local backbone router. In this network, the Stinger unit can
use the local router as its default route.
Figure 5-6. Local backbone router to be used as default route
If a local router is the unit’s default route, or gateway, the Stinger unit can pass all IP
packets with an unrecognized address to that router, so its own routing table can
remain small. The external router maintains larger routing tables and assumes the
responsibility and overhead of routing most packets.
For example, the following commands define a default route to the LAN router in
Figure 5-6:
Control module’s
Ethernet port address
1.1.1.1/24
Hu
b
1.1.1.3/24
1.1.2.3/24
Local
