Gentoo Archives: gentoo-user

From: Bill Longman <bill.longman@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Problem with Having two Network Cards in System ...
Date: Fri, 01 Oct 2010 13:24:57
Message-Id: 4CA5E0D0.6070503@gmail.com
In Reply to: [gentoo-user] Problem with Having two Network Cards in System ... by Christopher Koeber
1 On 09/30/10 20:07, Christopher Koeber wrote:
2 > Hello,
3 >
4 > I have a system with two network cards. The cards are configured for
5 > DHCP for two separate networks and they get their respective IP
6 > addresses from the different DCHP servers.
7 >
8 > The problem is that the network access on <I>either</I> network is
9 > sporatic at best. The networks are as follows:
10 >
11 > First, my network config file:
12 >
13 > <B>/etc/conf.d/net</B>
14 >
15 > -----------------------------
16 > # This blank configuration will automatically use DHCP for any net.*
17 > # scripts in /etc/init.d. To create a more complete configuration,
18 > # please review /etc/conf.d/net.example and save your configuration
19 > # in /etc/conf.d/net (this file :]!).
20 > config_eth0=( "dhcp" )
21 > dhcpcd_eth0="-N"
22 > config_eth1=( "dhcp" )
23 > dhcpcd_eth1="-N"
24 > -----------------------------
25 >
26 >
27 > <B>ETH0:</B>
28 > This is on a Gigabit network and I rarely, if ever, get access on this
29 > network. This is an add-in card that I added after the initial installation.
30 >
31 > Here is the ifconfig of eth0
32 > -----------------------------
33 > eth0 Link encap:Ethernet HWaddr 00:26:f2:ac:c9:df
34 > inet addr:10.10.50.68 Bcast:10.10.50.255 Mask:255.255.255.0
35 > inet6 addr: fe80::226:f2ff:feac:c9df/64 Scope:Link
36 > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
37 > RX packets:69584 errors:0 dropped:492 overruns:0 frame:0
38 > TX packets:2291 errors:0 dropped:0 overruns:0 carrier:0
39 > collisions:0 txqueuelen:1000
40 > RX bytes:5631144 (5.3 MiB) TX bytes:237966 (232.3 KiB)
41 > Interrupt:23 Base address:0xc000
42 > -----------------------------
43 >
44 > <B>ETH1:</B>
45 > This is on a 10/100 network and I get access sporatically on this
46 > network. This card is a built-in card.
47 >
48 > Here is the ifconfig of eth1
49 > -----------------------------
50 > eth1 Link encap:Ethernet HWaddr 00:b0:d0:fc:51:c7
51 > inet addr:10.60.1.1 Bcast:10.60.255.255 Mask:255.255.0.0
52 > inet6 addr: fe80::2b0:d0ff:fefc:51c7/64 Scope:Link
53 > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
54 > RX packets:640794 errors:0 dropped:0 overruns:0 frame:0
55 > TX packets:57388 errors:2 dropped:0 overruns:0 carrier:2
56 > collisions:0 txqueuelen:1000
57 > RX bytes:63730861 (60.7 MiB) TX bytes:17820579 (16.9 MiB)
58 > -----------------------------
59 >
60 > Now, both networks neet to be operational as I would like for the system
61 > itself to be able to contact both networks and run services for each
62 > network. However, the networks will NOT be bridged by the server in
63 > question.
64 >
65 > When i originally set up the system everything worked fine.
66 >
67 > What do I need to do to make sure the system communicates to the
68 > networks in question?
69 >
70 > Thank you for your time.
71
72 Christopher, it would be helpful to see your network stack information.
73 What does "netstat -nr" tell you? Are you getting two default gateways?
74 That's a good way to get bad behaviour.