Hi, We have a one gigabit internet connection that is normally routed by a hardware juniper router. The drive in this is down and we need to use a linux machine (Pentium D 3 ghz) as a temporary router. Now setting up all the 600 vlans and assigning ip addresses is no problem. We have testet all by using a laptop, setting up 600 vlan interfaces on this and running dhcpclient on all. This worked just fine, all the interfaces got address.
Now for the real setup. We closed the mac of the juniper to the network card that would be connected to the internal LAN, set up the interfaces, and swapped cables. This worked fine for approximately 100 of the computers that are connected, but the rest would not get IP. The connected 100 computers were routed just fine. What we think the problem is, is that the arp cache on the linux router seems strange. It can resolve the MAC for the 100 clients that actually got through. For the rest all we see in the arp cache is (incomplete) Here is some of the listing for arp -n: 193.239.155.118 ether 00:0A:E4:59:75:66 C eth1.1087 193.239.154.74 (incomplete) eth1.1016 193.239.155.7 ether 00:11:95:D2:3F:FD C eth1.2002 83.143.114.222 (incomplete) eth1.1305 83.143.113.246 ether 00:0B:5D:4B:B8:77 C eth1.1247 83.143.116.126 (incomplete) eth1.1409 83.143.118.114 (incomplete) eth1.1534 193.239.154.210 ether 00:03:0D:2F:1B:7F C eth1.1050 169.254.69.247 ether 00:15:C5:C2:31:6C C eth1.1262 83.143.112.38 (incomplete) eth1.1131 83.143.118.18 (incomplete) eth1.1510 83.143.112.118 ether 00:11:95:CE:BF:72 C eth1.1151 192.168.1.2 ether 00:0D:88:78:C0:00 C eth1.2050 83.143.117.138 (incomplete) eth1.1476 83.143.116.18 (incomplete) eth1.1382 83.143.118.26 (incomplete) eth1.1512 83.143.112.6 (incomplete) eth1.1123 193.239.155.62 (incomplete) eth1.1073 `arp -n|wc -l` returns around 350, which is the number of active ports on the edge switches... this number is confirmed by snmp I have looked through the source for arp.c but i can't see any immediate problems. There is no messages in dmesg, kern.log og messages (except for eth1.vlanid up * 600). If anyone know what the problem can be, if this is a bug, or if PSBKC i would much appreciate it. regards Øyvind Vågen Jægtnes +47 96 22 03 08 [EMAIL PROTECTED] - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
