RE: linux box as vlan router

Hi all,

I try to emulate vlan setup with this setup


PC-A -→ on vlan2 eth0-0.0.0.0 & eth0.2-192.168.127.141
PC-C -→ on vlan3 eth0-0.0.0.0 & eth0.3-192.168.128.141

PC C acting as vlan router
	eth1-0.0.0.0  eth1.2-192.168.127.142  
	eth2 -0.0.0.0 eth2.3-192.168.128.142

VLAN2				eth2	VLAN3 eth3					
PC A  ---------------------->  PC B ----------------------> PC C

I was able to ping from a to b and from c to b  but not a->c & c->a. also when I analyzed pkt in ethereal I found no vlan tag att to pkt. 

I’m dumping the output of route and ifconfig. 

The routing info  & ifconfig at B is 

Kernel IP routing table
Destination     Gateway       Genmask         Flags Metric Ref    Use Iface
192.168.128.0   *             255.255.255.0   U     0      0        0 eth2.3
192.168.127.0   *             255.255.255.0   U     0      0        0 eth1.2
192.168.144.0   *             255.255.254.0   U     0      0        0 eth0
default       192.168.144.5   0.0.0.0         UG    0      0        0 eth0


ifconfig-



eth0      Link encap:Ethernet  HWaddr 00:07:E9:09:D7:79  
          inet addr:192.168.144.142  Bcast:192.168.145.255  Mask:255.255.254.0
          inet6 addr: fe80::207:e9ff:fe09:d779/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:68255 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1599 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:6391334 (6.0 MiB)  TX bytes:198958 (194.2 KiB)
          Base address:0xdec0 Memory:fe960000-fe980000 

eth1      Link encap:Ethernet  HWaddr 00:07:E9:09:D5:63  
          inet6 addr: fe80::207:e9ff:fe09:d563/64 Scope:Link
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:35 errors:0 dropped:0 overruns:0 frame:0
          TX packets:69 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:3584 (3.5 KiB)  TX bytes:6034 (5.8 KiB)
          Base address:0xdf00 Memory:fe9a0000-fe9c0000 

eth1.2    Link encap:Ethernet  HWaddr 00:07:E9:09:D5:63  
          inet addr:192.168.127.142  Bcast:192.168.127.255  Mask:255.255.255.0
          inet6 addr: fe80::207:e9ff:fe09:d563/64 Scope:Link
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:35 errors:0 dropped:0 overruns:0 frame:0
          TX packets:45 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:2814 (2.7 KiB)  TX bytes:3862 (3.7 KiB)

eth2      Link encap:Ethernet  HWaddr 00:0D:56:D9:22:24  
          inet6 addr: fe80::20d:56ff:fed9:2224/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:54 errors:0 dropped:0 overruns:0 frame:0
          TX packets:60 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:4016 (3.9 KiB)  TX bytes:4754 (4.6 KiB)
          Base address:0xdf40 Memory:fe9e0000-fea00000 

eth2.3    Link encap:Ethernet  HWaddr 00:0D:56:D9:22:24  
          inet addr:192.168.128.142  Bcast:192.168.128.255  Mask:255.255.255.0
          inet6 addr: fe80::20d:56ff:fed9:2224/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:28 errors:0 dropped:0 overruns:0 frame:0
          TX packets:22 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:1680 (1.6 KiB)  TX bytes:1776 (1.7 KiB)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:1932 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1932 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:2546953 (2.4 MiB)  TX bytes:2546953 (2.4 MiB)

 
And at a is 
Kernel IP routing table
Destination     Gateway     Genmask         Flags Metric Ref    Use Iface
192.168.128.0   *           255.255.255.0   U     0      0        0 eth0.2

And at b is
Kernel IP routing table
Destination     Gateway      Genmask         Flags Metric Ref    Use Iface
192.168.127.0   *            255.255.255.0   U     0      0        0 eth0.3


I have devoted 2 days but I'm not able to figure out the problem. What is going wrong?? Please direct me where I’m doing mistake.

Thanks ☺
Sunil Parolia



________________________________________
From: [email protected] [mailto:[email protected]] On Behalf Of hareram
Sent: Monday, April 11, 2005 5:20 PM
To: [email protected]
Subject: Re: [VLAN] linux box as vlan router

Hi
 
yes you can do that with out any effort
if you are newly installing, install selecing all packages
so its installs automatically.
 
vconfig package for adding vlans
 
this link may help you
 
http://www.planetconnect.com/vlan/
 
hare
----- Original Message ----- 
From: Sunil Parolia 
To: [email protected] 
Sent: Monday, April 11, 2005 11:08 AM
Subject: [VLAN] linux box as vlan router

Hi I'm new to vlan. This q may sound absurd, but just wanted to know can we configure standard linux box as vlan router? If yes can anybody direct to relevant site for configuration? I'm using fedora-3 with kernel version of 2.6.9-1.667

Thanks & regards,
Sunil Parolia 

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