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Full Discussion: Routing
Special Forums IP Networking Routing Post 2559 by john fli on Monday 21st of May 2001 05:14:40 PM
Old 05-21-2001
Network

I have SCO Unix. I have 2 routers. as it is now, when someone telnets to UNIX and goes through router #1 everything is fine. The users who go through router #2 can not connect at all. I talked to CISCO and they said I need to set up a second Gateway on UNIX. They said what is happening is that UNIX tries to respond, but it is responding to router #1 becasue that is all that it knows. What is the command for adding a second Gateway?
 

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in.rdisc(1M)						  System Administration Commands					      in.rdisc(1M)

NAME
in.rdisc, rdisc - network router discovery daemon SYNOPSIS
/usr/sbin/in.rdisc [-a] [-f] [-s] [send-address] [receive-address] /usr/sbin/in.rdisc -r [-p preference] [-T interval] [send-address] [receive-address] DESCRIPTION
in.rdisc remains part of the software distribution of the Solaris Operating Environment. It is, however, not used by default. in.routed(1M) includes the functionality provided by in.rdisc. See routeadm(1M) for details of how to specify the IPV4 routing daemon. in.rdisc implements the ICMP router discovery protocol. The first form of the command is used on hosts and the second form is used on routers. in.rdisc can be invoked in either the first form (host mode) or second form (router mode). On a host, in.rdisc populates the network routing tables with default routes. On a router, advertises the router to all the hosts. Host (First Form) On a host, in.rdisc listens on the ALL_HOSTS (224.0.0.1) multicast address for ROUTER_ADVERTISE messages from routers. The received mes- sages are handled by first ignoring those listed router addresses with which the host does not share a network. Among the remaining addresses, the ones with the highest preference are selected as default routers and a default route is entered in the kernel routing table for each one of them. Optionally, in.rdisc can avoid waiting for routers to announce themselves by sending out a few ROUTER_SOLICITATION messages to the ALL_ROUTERS (224.0.0.2) multicast address when it is started. A timer is associated with each router address. The address will no longer be considered for inclusion in the routing tables if the timer expires before a new advertise message is received from the router. The address will also be excluded from consideration if the host receives an advertise message with the preference being maximally negative or with a lifetime of zero. Router (Second Form) When in.rdisc is started on a router, it uses the SIOCGIFCONF ioctl(2) to find the interfaces configured into the system and it starts lis- tening on the ALL_ROUTERS multicast address on all the interfaces that support multicast. It sends out advertise messages to the ALL_HOSTS multicast address advertising all its IP addresses. A few initial advertise messages are sent out during the first 30 seconds and after that it will transmit advertise messages approximately every 600 seconds. When in.rdisc receives a solicitation message, it sends an advertise message to the host that sent the solicitation message. When in.rdisc is terminated by a signal, it sends out an advertise message with the preference being maximally negative. OPTIONS
-a Accept all routers independent of the preference they have in their advertise messages. Normally, in.rdisc only accepts (and enters in the kernel routing tables) the router or routers with the highest preference. -f Run in.rdisc forever even if no routers are found. Normally, in.rdisc gives up if it has not received any advertise message after soliciting three times, in which case it exits with a non-zero exit code. If -f is not specified in the first form then -s must be specified. -r Act as a router, rather than a host. -s Send three solicitation messages initially to quickly discover the routers when the system is booted. When -s is specified, in.rdisc exits with a non-zero exit code if it can not find any routers. This can be overridden with the -f option. -p preference Set the preference transmitted in the solicitation messages. The default is zero. -T interval Set the interval between transmitting the advertise messages. The default time is 600 seconds. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWroute | +-----------------------------+-----------------------------+ SEE ALSO
in.routed(1M), routeadm(1M), ioctl(2), gateways(4), attributes(5), icmp(7P), inet(7P) Deering, S.E., editor, ICMP Router Discovery Messages, RFC 1256, Network Information Center, SRI International, Menlo Park, California, September 1991. SunOS 5.10 5 Nov 2004 in.rdisc(1M)
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