how to set gateway for VLAN in if-cfg file?

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I'm trying to use https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Deployment_Guide/s1-networkscripts-interfaces.html to configure VLAN over LACP teaming.

I've created ifcfg-team0.200 file, with such content:

DEVICE=team0.200
BOOTPROTO=none
ONBOOT=yes
IPADDR=***
NETMASK=255.255.255.0
VLAN=yes
DNS=***
PEERDNS=yes

But there are no GATEWAY parameter,
So, to make it work, I've also modified /etc/sysconfig/network file and included GATEWAY=... there.

But I have several VLANs and each of them has own GATEWAY.
How can I set GATEWAY to VLAN, not globally?

ov
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Responses

ir. Jan Gerrit Kootstra's picture Guru 6222 points
12 October 2014 9:51 PM

GATEWAY is the default gateway, so where all traffic should go that has not been defined by a static route.
Static routes are defined in /etc/sysconfig/network-scripts/route-team0.200 amd other /etc/sysconfig/network-scripts/route-devicename files.

GATEWAY is an ENVIRONMENT VARIABLE, so defining it multiple times may cause confusion and unpredictable values. For it might be that after a reboot or service network restart NICs are started in a different order.

Kind regards,

Jan Gerrit Kootstra

james.radtke@siriusxm.com's picture Guru 6863 points
12 October 2014 10:02 PM

To add to Jan Gerrit Kootstra's response - the documentation can be found here:
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Deployment_Guide/s1-networkscripts-static-routes.html

There are additional considerations for multi-homed hosts with several routeable addresses. I, however, am not versed enough to be able to give a short summary of things to look for. Perhaps if you provide a short explanation of number of interfaces, where they will be routed to, we could assist further (if needed).

ov Active Contributor 244 points
13 October 2014 7:16 AM

Thanks, it seems I was confused with Windows UI which allows me to set "gateway per VLAN". I've found that just using default gateway works for me.

SW Red Hat Guru 4022 points
13 October 2014 8:18 AM

Hello Oleg

The section James Radtke linked to has been improved again to show use the use of "ip route" to display the routing table. It is always worth checking the routing table before, and after, making any changes (with a "network service restart" after making a change).

The update will be published tomorrow.

As Jan pointed out, static routes can stored per-interface (but not globally in Red Hat Enterprise Linux).

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