Cabletron Systems SmartSwitch Router, Руководство пользователя, Страница: 92 / 338

Chapter 6: IP Routing Configuration Guide
92 SmartSwitch Router User Reference Manual
packets to be processed on the SSR even if directed broadcast is not enabled on the
interface receiving the packet.
Similarly, the SSR installs flows to drop packets destined for the SSR for which service is
not provided by the SSR. This prevents packets for unknown services from slowing the
CPU. You can disable this behavior, causing these packets to be processed by the CPU.:
Monitoring IP Parameters
The SSR provides display of IP statistics and configurations contained in the routing table.
Information displayed provides routing and performance information.
To display IP information, enter the following command in Enable mode:
Configuring Router Discovery
The router discovery server on the SSR periodically sends out router advertisements to
announce the existence of the SSR to other hosts. The router advertisements are multicast
or broadcast to each interface on the SSR on which it is enabled and contain a list of the
addresses on the interface and the preference of each address for use as a default route for
the interface. A host can also send a router solicitation, to which the router discovery
server on the SSR will respond with a unicast router advertisement.
On systems that support IP multicasting, router advertisements are sent to the ‘all-hosts’
multicast address 224.0.0.1 by default. You can specify that broadcast be used, even if IP
multicasting is available. When router advertisements are sent to the all-hosts multicast
Disables the directed-
broadcast-protection feature
of the SSR. ip dos disable directed-broadcast-protection
Disables the port-attack-
protection feature of the SSR. ip dos disable port-attack-protection
Show ARP table entries. arp show all
Show IP interface configuration. interface show ip
Show all TCP/UDP connections
and services. ip show connections [no-lookup]
Show configuration of IP interfaces. ip show interfaces [
<interface-name>
]
Show IP routing table information. ip show routes
Show ARP entries in routing table.
ip show routes show-arps
Show DNS parameters. system show dns