Date: Wed, 3 Sep 1997 01:20:32 -0400 (EDT) From: spork <spork@super-g.com> To: "Riley J. McIntire" <rileyj@tgci.com> Cc: isp@FreeBSD.ORG Subject: Re: Moving server to different ethernet can I use the same IP #s? Message-ID: <Pine.BSF.3.96.970903011329.10455B-100000@super-g.inch.com> In-Reply-To: <199709030415.VAA24888@train.tgci.com>
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You came real close, you want to do exactly what you just did to your machine on the Cisco as well... ie: enable conf t int eth ? ip address old.net.here. mask secondary exit wr mem This will put a second address on the cisco, and "automagically" make it see the your machine with the old number. The question is, does the rest of the internet know that this net is reachable through this router? This is a nice hack to transition from one provider to another with a router from Provider A and one from Provider B on the same ethernet and all hosts answering to two IPs, but otherwise, it will not really accomplish anything as all traffic to these IPs will still head towards your original router. If you do have two providers on the same wire, be sure to give *both* routers addresses on the other's net. And try to avoid running RIP, as I believe it could cause quite a mess... Charles On Tue, 2 Sep 1997, Riley J. McIntire wrote: > Hi, and help!, > > I've had to make a quick move of a web/mail/dns server. An involved > story, but the old network is moving and the router was moved. > I have use of the existing IP numbers for a bit, and need to use > these until I can change them through the internic. I've physically > moved the server to another ethernet with a different gateway and > want to know how (if possible!) to set this up. The web server is > most important, although no one is paying for this yet... > > At first I just tried adding a new gateway, but that didn't seem to > work. > > What I've tried so far is bind an ip # from the new net to the > interface. I can telnet to this ip number from the new network. > The default gateway is now 205.185.169.1 (a cisco 2500) > Do I need to add a route from the cisco to the old numbers? How? > Speaking of which, the numbers are 206.250.85.99 to x.x.x.109. > > > I'm using fbsd 2.2.2-R > > Parts of rc.conf, rc.local and /var/log/messages follow. > > If this can be done at all any help is appreciated. > > tia, > > Riley > > > (Note- most of the network portions of rc.conf and rc.local were > configured by someone else--I'm a bit new to this! ) > > Here's the pertinent part of rc.conf: > > ### Basic network options: ### > hostname="charmed.wilshire.net" # Set this! > nisdomainname="NO" # Set to NIS domain if using NIS (or NO). > firewall="NO" # Set to firewall type or NO for none. > tcp_extensions="YES" # Allow RFC1323 & RFC1544 extensions (or NO). > network_interfaces="ed1 lo0" # List of network interfaces (lo0 is loopback). > > ##old network 206.250.85.0 > #ifconfig_ed1="inet 206.250.85.80 netmask 255.255.255.0" > ##net network 205.185.169.0 > ifconfig_ed1="inet 205.185.169.120 netmask 255.255.255.0" > > ifconfig_lo0="inet 127.0.0.1" # default loopback device configuration. > > ### Network daemon (miscellaneous) & NFS options: ### > syslogd_enable="YES" # Run syslog daemon (or NO). > syslogd_flags="" # Flags to syslogd (if enabled). > inetd_flags="" # Optional flags to inetd (always enabled). > named_enable="YES" # Run named, the DNS server (or NO). > named_flags="-b /etc/namedb/named.boot" # Flags to named (if enabled). > kerberos_server_enable="NO" # Run a kerberos master server (or NO). > rwhod_enable="NO" # Run the rwho daemon (or NO). > amd_enable="NO" # Run amd service with $amd_flags (or NO). > amd_flags="-a /net -c 1800 -k i386 -d my.domain -l syslog /host /etc/amd.map" > nfs_client_enable="NO" # This host is an NFS client (or NO). > nfs_server_enable="NO" # This host is an NFS server (or NO). > weak_mountd_authentication="NO" # Running PCNFSD / other non-root nfsd (or NO). > nfs_reserved_port_only="NO" # Provide NFS only on secure port (or NO). > rpc_lockd_enable="NO" # Run NFS rpc.lockd (*broken!*) if nfs_server. > rpc_statd_enable="YES" # Run NFS rpc.statd if nfs_server (or NO). > portmap_enable="YES" # Run the portmapper service (or NO). > portmap_flags="" # Flags to portmap (if enabled). > xtend_enable="NO" # Run the X-10 power controller daemon. > xtend_flags="" # Flags to xtend (if enabled). > > [snip time and info services] > > ### Network routing options: ### > defaultrouter="205.185.169.1" # Set to default gateway (or NO). > static_routes="" # Set to static route list (or leave empty). > # Enable gateway for 206.250.85.0 to 205.185.169.0 9/2/97 rjm > gateway_enable="YES" # Set to YES if this host will be a gateway. > router_enable="YES" # Set to YES to enable a routing daemon. > router="routed" # Name of routing daemon to use if enabled. > router_flags="-q" # Flags for routing daemon. > mrouted_enable="NO" # Do multicast routing (see /etc/mrouted.conf) > ipxgateway_enable="NO" # Set to YES to enable IPX routing. > ipxrouted_enable="NO" # Set to YES to run the IPX routing daemon. > ipxrouted_flags="" # Flags for IPX routing daemon. > arpproxy_all="" # obsolete kernel option ARP_PROXY_ALL equiv. > > Here's the pertinent rc.local > > # put your local stuff here > > /sbin/ifconfig ed1 alias 206.250.85.99 netmask 255.255.255.0 up > /sbin/ifconfig ed1 alias 206.250.85.100 netmask 255.255.255.0 up > /sbin/ifconfig ed1 alias 206.250.85.105 netmask 255.255.255.0 up > /sbin/ifconfig ed1 alias 206.250.85.106 netmask 255.255.255.0 up > /sbin/ifconfig ed1 alias 206.250.85.107 netmask 255.255.255.0 up > /sbin/ifconfig ed1 alias 206.250.85.108 netmask 255.255.255.0 up > /sbin/ifconfig ed1 alias 206.250.85.109 netmask 255.255.255.0 up > /sbin/route add -net 205.185.169.0 -interface 205.185.169.120 -netmask > 255.255.0 > > /var/log/messages > > > Sep 2 20:43:10 charmed syslogd: exiting on signal 15 > Sep 2 20:44:49 charmed /kernel: Copyright (c) 1992-1997 FreeBSD Inc. > Sep 2 20:44:49 charmed /kernel: Copyright (c) 1982, 1986, 1989, 1991, > 1993 Sep 2 20:44:49 charmed /kernel: The Regents of the > University of Califo. Sep 2 20:44:49 charmed /kernel: Sep 2 20:44:49 > charmed /kernel: FreeBSD 2.2.2-RELEASE #0: Tue Jul 8 21:37:42 7 Sep > 2 20:44:49 charmed /kernel: > rileyj@charmed.wilshire.net:/usr/src/sys/cD Sep 2 20:44:50 charmed > /kernel: CPU: Pentium (119.75-MHz 586-class CPU) Sep 2 20:44:50 > charmed /kernel: Origin = "GenuineIntel" Id = 0x526 Steppin6 Sep > 2 20:44:50 charmed /kernel: > Features=0x1bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX> Sep 2 20:44:50 charmed > /kernel: real memory = 33554432 (32768K bytes) Sep 2 20:44:50 > charmed /kernel: avail memory = 30789632 (30068K bytes) Sep 2 > 20:44:50 charmed /kernel: Probing for devices on PCI bus 0: Sep 2 > 20:44:50 charmed /kernel: chip0 <Intel 82437VX PCI cache memory > controll0 Sep 2 20:44:50 charmed /kernel: chip1 <Intel 82371SB > PCI-ISA bridge> rev 1 on 0 Sep 2 20:44:50 charmed /kernel: chip2 > <Intel 82371SB IDE interface> rev 0 on p1 Sep 2 20:44:50 charmed > /kernel: ahc0 <Adaptec 2940 SCSI host adapter> rev 0 in0 Sep 2 > 20:44:50 charmed /kernel: ahc0: aic7870 Wide Channel, SCSI Id=7, 16 > SCBs Sep 2 20:44:50 charmed /kernel: ahc0 waiting for scsi devices to > settle Sep 2 20:44:50 charmed /kernel: (ahc0:0:0): "SEAGATE ST51080N > 0958" type 0 fix2 Sep 2 20:44:50 charmed /kernel: sd0(ahc0:0:0): > Direct-Access 1030MB (2109840 5) Sep 2 20:44:50 charmed /kernel: > (ahc0:5:0): "TOSHIBA CD-ROM XM-3501TA 0315" ty2 Sep 2 20:44:50 > charmed /kernel: cd0(ahc0:5:0): CD-ROM cd present [291470 x 204] Sep > 2 20:44:51 charmed /kernel: Probing for devices on the ISA bus: Sep 2 > 20:44:51 charmed /kernel: sc0 at 0x60-0x6f irq 1 on motherboard Sep 2 > 20:44:51 charmed /kernel: sc0: VGA color <16 virtual consoles, > flags=0x0> Sep 2 20:44:51 charmed /kernel: ed1 at 0x260-0x27f irq 10 > on isa Sep 2 20:44:51 charmed /kernel: ed1: address > 00:40:95:34:56:26, type NE2000 (1 Sep 2 20:44:51 charmed /kernel: > sio0 at 0x3f8-0x3ff irq 4 on isa Sep 2 20:44:51 charmed /kernel: > sio0: type 16550A Sep 2 20:44:51 charmed /kernel: sio1 at 0x2f8-0x2ff > irq 3 on isa Sep 2 20:44:51 charmed /kernel: sio1: type 16550A Sep 2 > 20:44:51 charmed /kernel: lpt0 at 0x378-0x37f irq 7 on isa Sep 2 > 20:44:51 charmed /kernel: lpt0: Interrupt-driven port Sep 2 20:44:51 > charmed /kernel: lp0: TCP/IP capable interface Sep 2 20:44:51 charmed > /kernel: fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa Sep 2 20:44:51 > charmed /kernel: fdc0: NEC 72065B Sep 2 20:44:51 charmed /kernel: > fd0: 1.44MB 3.5in Sep 2 20:44:51 charmed /kernel: wdc0 not found at > 0x1f0 Sep 2 20:44:52 charmed /kernel: wt0 at 0x300-0x301 irq 5 drq 1 > on isa Sep 2 20:44:52 charmed /kernel: wt0: type <Wangtek> Sep 2 > 20:44:52 charmed /kernel: npx0 flags 0x1 on motherboard Sep 2 > 20:44:52 charmed /kernel: npx0: INT 16 interface Sep 2 20:44:52 > charmed /kernel: ccd0-3: Concatenated disk drivers Sep 2 20:44:52 > charmed named[78]: starting. named 4.9.4-P1 Fri May 16 13:45:2d Sep > 2 20:44:52 charmed named[79]: Ready to answer queries. Sep 2 20:44:56 > charmed lpd[112]: restarted Sep 2 20:45:02 charmed routed[55]: punt > RTM_ADD without gateway Sep 2 20:45:02 charmed routed[55]: > write(rt_sock) RTM_ADD 206.250.85.0 --> 206s Sep 2 20:50:03 charmed > su: rileyj to root on /dev/ttyv0 > > > >
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