[VLAN] linux box as vlan router

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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: vlan-bounces@xxxxxxxxxxxxxxx [mailto:vlan-bounces@xxxxxxxxxxxxxxx] On Behalf Of hareram
Sent: Monday, April 11, 2005 5:20 PM
To: vlan@xxxxxxxxxxxxxxx
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: vlan@xxxxxxxxxxxxxxx 
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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