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Special Forums IP Networking network segment use vlan, linux vconfig and AT-GS950 Post 302252213 by lorentz on Wednesday 29th of October 2008 03:38:52 AM
Old 10-29-2008
Quote:
Originally Posted by penyu
Dear all,

I have a Allied Telesyn AT-GS950 16 port switch.
All hosts&router have rtl8139 NICs.
OS : Slackware linux 12.1.
I use a switch with vlan technique to separate my network to some segment.

here my plan:

router eth0 ---> switch port 1
switch port 5 <--- eth0 host A
switch port 6 <--- eth0 host B

in eth0 of router, I make two vlan :
Code:
# modprobe 8021q
# ifconfig eth0 0.0.0.0 up
# vconfig add eth0 5
# ifconfig eth0.5 172.16.5.1 netmask 255.255.255.0 up
# vconfig add eth0 6
# ifconfig eth0.5 172.16.6.1 netmask 255.255.255.0 up

host A :
Code:
# ifconfig eth0 172.16.5.2 netmask 255.255.255.0 up

host B :
Code:
# ifconfig eth0 172.16.6.2 netmask 255.255.255.0 up

Arrange vlan configuration in switch :
Code:
VLAN_ID    VLAN_NAME     VLAN_MEMBER
1        Default VLAN   Untag:1; Tag:-; Not_member:2-16
5        vlan5              Untag:5; Tag:1; Not_member:2-4,6-16
6        vlan6              Untag:6; Tag:1; Not_member:2-5,7-16

ping result to both host A and host B from router gave same result : Destination Host Unreachable
ping command :
Code:
# ping 172.16.5.2 -I vlan5
# ping 172.16.6.2 -I vlan6

Please help, there's maybe I have wrong concept about vlan configuration?
Thank you very much.


Regards,
Denny
All config seems to be ok. Check ping from host to router (in same network, 172.16.5.2 -> 172.16.5.1 etc). Check running router process on router. And check trunk mode on AT switch - it must be 802.1q (dot1q).

Additionaly try to disable firewall on router, if you use that

I hope that helps
 

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ETHERSWITCHCFG(8)					    BSD System Manager's Manual 					 ETHERSWITCHCFG(8)

NAME
etherswitchcfg -- configure a built-in Ethernet switch SYNOPSIS
etherswitchcfg [-f control file] info etherswitchcfg [-f control file] config command parameter etherswitchcfg [-f control file] phy phy.register[=value] etherswitchcfg [-f control file] port%d [flags] command parameter etherswitchcfg [-f control file] reg register[=value] etherswitchcfg [-f control file] vlangroup%d command parameter DESCRIPTION
The etherswitchcfg utility is used to configure an Ethernet switch built into the system. etherswitchcfg accepts a number of options: -f control file Specifies the etherswitch(4) control file that represents the switch to be configured. It defaults to /dev/etherswitch0. -m When reporting port information, also list available media options for that port. -v Produce more verbose output. Without this flag, lines that represent inactive or empty configuration options are omitted. config The config command provides access to global switch configuration parameters. It support the following commands: vlan_mode mode Sets the switch VLAN mode (depends on the hardware). phy The phy command provides access to the registers of the PHYs attached to or integrated into the switch controller. PHY registers are speci- fied as phy.register, where phy is usually the port number, and register is the register number. Both can be provided as decimal, octal or hexadecimal numbers in any of the formats understood by strtol(3). To set the register value, use the form instance.register=value. port The port command selects one of the ports of the switch. It supports the following commands: pvid number Sets the default port VID that is used to process incoming frames that are not tagged. media mediaspec Specifies the physical media configuration to be configured for a port. mediaopt mediaoption Specifies a list of media options for a port. See ifconfig(8) for details on media and mediaopt. And the following flags (please note that not all flags are supported by all switch drivers): addtag Add VLAN tag to each packet sent by the port. -addtag Disable the add VLAN tag option. striptag Strip the VLAN tags from the packets sent by the port. -striptag Disable the strip VLAN tag option. firstlock This options makes the switch port lock on the first MAC address it sees. After that, usually you need to reset the switch to learn different MAC addresses. -firstlock Disable the first lock option. Note that sometimes you need to reset the switch to really disable this option. dropuntagged Drop packets without a VLAN tag. -dropuntagged Disable the drop untagged packets option. doubletag Enable QinQ for the port. -doubletag Disable QinQ for the port. ingress Enable the ingress filter on the port. -ingress Disable the ingress filter. reg The reg command provides access to the registers of the switch controller. vlangroup The vlangroup command selects one of the VLAN groups for configuration. It supports the following commands: vlan VID Sets the VLAN ID (802.1q VID) for this VLAN group. Frames transmitted on tagged member ports of this group will be tagged with this VID. Incoming frames carrying this tag will be forwarded according to the configuration of this VLAN group. members port,... Configures which ports are to be a member of this VLAN group. The port numbers are given as a comma-separated list. Each port can optionally be followed by ``t'' to indicate that frames on this port are tagged. FILES
/dev/etherswitch? Control file for the Ethernet switch driver. EXAMPLES
Configure VLAN group 1 with a VID of 2 and make ports 0 and 5 its members while excluding all other ports. Port 5 will send and receive tagged frames while port 0 will be untagged. Incoming untagged frames on port 0 are assigned to vlangroup1. # etherswitchcfg vlangroup1 vlan 2 members 0,5t port0 pvid 2 SEE ALSO
etherswitch(4) HISTORY
etherswitchcfg first appeared in FreeBSD 10.0. AUTHORS
Stefan Bethke BSD
September 20, 2013 BSD
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