11-08-2008
network question
Hi here is my question;
any help would be appreciated
The Linux system pokey has two Ethernet cards. The first Ethernet card is connected to a companywide
TCP/IP network covering the addresses 87.65.43.xx, where pokey's address is
87.65.43.21. The second Ethernet interface is connected to a smaller local network covering the
addresses 192.168.1.x. The machine named skeptopotamus, with the address
87.65.43.1, can route traffic from pokey to the rest of the Internet. What does pokey's routing
table look like (show destination addresses/masks, interfaces and other information where needed).
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LEARN ABOUT PLAN9
ipconfig
IPCONFIG(8) System Manager's Manual IPCONFIG(8)
NAME
ipconfig, arpd, rip - Internet configuration and routing
SYNOPSIS
ip/ipconfig [-abp] [-e etherdev] [-m ip-mask] [ipaddr]
ip/arpd [-pd] [-e etherdev] [-b bcast-addr]
ip/rip [-b]
DESCRIPTION
Ipconfig configures an Internet connection on an Ethernet. The options are
a do not start arpd
b do not use BOOTP to discover a gateway address
p start arpd in promiscuous mode (see below)
e use the Ethernet mounted at /net/etherdev
m set the network mask to ip-mask
If ipaddr is specified on the command line, use that instead of one found in the local database or via the BOOTP protocol.
Arpd performs the Internet Address Resolution Protocol, translating Internet addresses into Ethernet addresses. It is normally started by
ipconfig. The options are
d print debugging to standard output
p (promiscuous) answer ARP requests for any recognized machine. The default is to answer just for the machine running arpd.
e use the Ethernet mounted at /net/etherdev
b use the IP broadcast address bcast-addr instead of the correct one.
Rip runs the routing protocol RIP. It listens for RIP packets on connected networks and updates the kernel routing tables. The only
option, -b, broadcasts routing information onto the networks.
SOURCE
/sys/src/cmd/ip/ipconfig.c
/sys/src/cmd/ip/arpd.c
/sys/src/cmd/ip/rip.c
SEE ALSO
ndb(6)
IPCONFIG(8)