nanog mailing list archives
Linux router (don't laugh) WAS:Re: test
From: John Fraizer <John.Fraizer () EnterZone Net>
Date: Tue, 27 Oct 1998 17:29:37 -0500
Routing 3 /24's and a /26 using 3 3c905's. eth0 goes to the cisco->world. eth1, eth1:0 and eth1:1 go to an ethernet switch that is serving machines from the three /24's. eth2 goes to a hub for one of our co-location clients. Attached is an mrtg graph from someone decided to throw about 8MB of garbage our way for a few hours. This little linux router just sat there and idled through it. [root@core0-eth0]:~ # /sbin/route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface Gateway-NET * 255.255.255.252 U 0 0 5 eth0 EZone-CoLo-2xx- * 255.255.255.192 U 0 0 97 eth2 2xx.xx.2xx.0 * 255.255.255.0 U 0 0 6189 eth1 xx6.28.xx.0 * 255.255.255.0 U 0 0 17 eth1:0 xx9.201.1x8.0 * 255.255.255.0 U 0 0 27 eth1:1 loopback * 255.0.0.0 U 0 0 0 lo default core1-eth0-Ente 0.0.0.0 UG 1 0 286496 eth0 [root@core0-eth0]:~ # /sbin/ifconfig lo Link encap:Local Loopback inet addr:127.0.0.1 Bcast:127.255.255.255 Mask:255.0.0.0 UP BROADCAST LOOPBACK RUNNING MTU:3584 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 coll:0 eth0 Link encap:Ethernet HWaddr 00:60:08:A2:XX:XX inet addr:2xx.1xx.xx7.xx Bcast:2xx.1xx.xx7.xx Mask:255.255.255.252 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:27965989 errors:0 dropped:0 overruns:0 frame:0 TX packets:60325424 errors:0 dropped:0 overruns:0 carrier:0 coll:81 Interrupt:11 Base address:0x6100 eth1 Link encap:Ethernet HWaddr 00:60:08:A2:XX:XX inet addr:2xx.4x.xx4.1 Bcast:2xx.4x.xx4.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:60459559 errors:0 dropped:0 overruns:0 frame:0 TX packets:28096141 errors:0 dropped:0 overruns:0 carrier:10 coll:26 Interrupt:10 Base address:0x6200 eth1:0 Link encap:Ethernet HWaddr 00:60:08:A2:XX:XX inet addr:2xx.x8.2x.1 Bcast:2xx.x8.2x.255 Mask:255.255.255.0 UP BROADCAST RUNNING MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 coll:0 eth1:1 Link encap:Ethernet HWaddr 00:60:08:A2:XX:XX inet addr:1x9.xx1.xx8.1 Bcast:1x9.xx1.xx8.255 Mask:255.255.255.0 UP BROADCAST RUNNING MTU:1500 Metric:1 RX packets:1 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 coll:0 eth2 Link encap:Ethernet HWaddr 00:60:08:A2:XX:XX inet addr:xx9.1x5.xx0.xx9 Bcast:xx9.1x5.xx0.191 Mask:255.255.255.192 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:135534 errors:0 dropped:0 overruns:0 frame:0 TX packets:62097 errors:0 dropped:0 overruns:0 carrier:0 coll:4 Interrupt:9 Base address:0x6300 At 11:24 AM 10/27/98 -0800, you wrote:
Other lessons learned, Linux won't route between multiple NICs, using multiple aliases, even with ip-forwarding enabled.Someone needs to tell one of our routers this. It has been routing between multiple NICs for well over a year without any problem.In that case, I would dearly love to hear how it was done.
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------- John Fraizer | __ _ The System Administrator | / / (_)__ __ ____ __ | The choice mailto:John.Fraizer () EnterZone Net | / /__/ / _ \/ // /\ \/ / | of a GNU http://www.EnterZone.Net/ | /____/_/_//_/\_,_/ /_/\_\ | Generation A 486 is a terrible thing to waste...
Current thread:
- Linux router (don't laugh) WAS:Re: test John Fraizer (Oct 27)
- Re: Linux router (don't laugh) WAS:Re: test William F. Maton (Oct 27)
- Re: Linux router (don't laugh) Nathan Stratton (Oct 27)
- Re: Linux router (don't laugh) Michael Shields (Oct 28)
- Re: Linux router (don't laugh) Studded (Oct 29)
- Re: Linux router (don't laugh) Joe Shaw (Oct 29)
- Re: Linux router (don't laugh) Richard Irving (Oct 29)
- Re: Linux router (don't laugh) Zach Brown (Oct 29)
- Re: Linux router (don't laugh) Michael Shields (Oct 28)
- Re: Linux router (don't laugh) WAS:Re: test Phil Howard (Oct 28)
- Re: Linux router (don't laugh) WAS:Re: test David G Andersen (Oct 28)