Cabletron Systems 9032578-05 manual Configuring Router Discovery, Arp show all, Interface show ip

Chapter 8: IP Routing Configuration Guide

The following example displays the contents of the routing table. It shows that some of the route entries are for locally connected interfaces (“directly connected”), while some of the other routes are learned from RIP.

ssr# ip show routes
Destination	Gateway	Owner	Netif
-----------	-------	-----	-----
10.1.0.0/16	50.1.1.2	RIP	to-linux2
10.2.0.0/16	50.1.1.2	RIP	to-linux2
10.3.0.0/16	50.1.1.2	RIP	to-linux2
10.4.0.0/16	50.1.1.2	RIP	to-linux2
14.3.2.1	61.1.4.32	Static	int61
21.0.0.0/8	50.1.1.2	RIP	to-linux2
30.1.0.0/16	directly connected	-	to-goya
50.1.0.0/16	directly connected	-	to-linux2
61.1.0.0/16	directly connected	-	int61
62.1.0.0/16	50.1.1.2	RIP	to-linux2
68.1.0.0/16	directly connected	-	int68
69.1.0.0/16	50.1.1.2	RIP	to-linux2
127.0.0.0/8	127.0.0.1	Static	lo
127.0.0.1	127.0.0.1	-	lo
210.11.99.0/24	directly connected	-	int41

To display additional IP information, enter the following command in Enable mode:

Show ARP table entries.	arp show all
Show IP interface configuration.	interface show ip
Show DNS parameters.	system show dns

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 address or an interface is configured for the limited broadcast address 255.255.255.255, the router advertisement includes all IP addresses configured on the physical interface. When router advertisements are sent to a net or subnet broadcast, then only the address associated with the net or subnet is included.

SmartSwitch Router User Reference Manual 87