Gentoo Archives: gentoo-user

From: meino.cramer@×××.de
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Slighty confused about net connections
Date: Sat, 29 Nov 2014 02:20:14
Message-Id: 20141129022004.GA4729@solfire
In Reply to: Re: [gentoo-user] Slighty confused about net connections by thegeezer@thegeezer.net
1 thegeezer@×××××××××.net <thegeezer@×××××××××.net> [14-11-29 02:56]:
2 > On 2014-11-28 18:35, meino.cramer@×××.de wrote:
3 > >Do I really need two interfaces isb0 and usb1 with different
4 > >subnets here?
5 > >Or do I miss something?
6 >
7 >
8 > howdy,
9 > yes you do.
10 > i.e.
11 > PC has real-eth0="192.168.1.1/24"
12 > PC has usb-eth0="192.168.2.1/24"
13 > PC has usb-eth1="192.168.2.2/24"
14 > sysA has usb-eth0="192.168.2.101/24"
15 > sysB has usb-eth0="192.168.2.102/24"
16 >
17 > from PC you want to ping 192.168.2.101, ok it pings
18 > then you want to ping 192.168.2.102 and you have a cached route for
19 > 192.168.2.0/24 dev usb-eth0
20 > you can get around this using policy routing but that is a bit much for
21 > what you want.
22 > you can always use smaller ranges for example:
23 >
24 > PC usb-eth0="192.168.2.1/25"
25 > PC usb-eth1="192.168.2.129/25"
26 > sysA usb-eth0="192.168.2.101/25"
27 > sysB usb-eth1"192.168.2.254/25"
28 >
29 >
30 Hi James, hi thegeezer
31
32 I want to summerize here what works, what dont work and what I tried
33 -- sorry I am no natie english speaker and my english is not exact
34 enough for such things...but well...lets see..
35
36 Current setup
37 PC:
38 usb0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
39 inet 192.168.10.1 netmask 255.255.255.0 broadcast 192.168.10.255
40 ether ee:6c:bc:6c:03:79 txqueuelen 1000 (Ethernet)
41
42 Arietta A:
43 usb0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
44 inet 192.168.10.10 netmask 255.255.255.0 broadcast 192.168.10.255
45 inet6 fe80::215:f2ff:fe18:b030 prefixlen 64 scopeid 0x20<link>
46 ether 00:15:f2:18:b0:30 txqueuelen 1000 (Ethernet)
47
48 Arietta B:
49 usb0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
50 inet 192.168.10.11 netmask 255.255.255.0 broadcast 192.168.10.255
51 inet6 fe80::215:f2ff:fe18:b030 prefixlen 64 scopeid 0x20<link>
52 ether 00:15:f2:18:b0:31 txqueuelen 1000 (Ethernet)
53
54
55 Tried:
56 (I only have one PC...)
57 Only Arietta A connected to PC: Works fine -- ssh login ok
58 Only Arietta B connected to PC: Works fine -- ssh login ok
59
60 Arietta A connected to PC, after it has booted Arietta B connected
61 to the same (motherboard internal) usb-hub of the PC: Cant ssh to Arietta B but
62 can ssh to Arietta A.
63 Switch result if connecting done in opposite order.
64
65 Question:
66 Is one usb_0 interface on the PC enough?
67 Is there something else wrong with my setup?
68
69 Thanks a lot for any help in advance!
70 Best regards,
71 Meino

Replies

Subject Author
Re: [gentoo-user] Slighty confused about net connections covici@××××××××××.com
[gentoo-user] Re: Slighty confused about net connections James <wireless@×××××××××××.com>