Thanks David

Regards
Michael Knill

From: David Kerr <da...@kerr.net>
Reply to: AstLinux List <astlinux-users@lists.sourceforge.net>
Date: Thursday, 3 February 2022 at 7:51 pm
To: AstLinux List <astlinux-users@lists.sourceforge.net>
Subject: Re: [Astlinux-users] WAN Bridge interface

If you are looking for redundancy on the WAN uplink then the way to do it is 
with bonded interfaces not bridged interfaces, assuming the other end supports 
bonds (also known as Link Aggregation) then the network layer will take care of 
it all.  Astlinux out-of-the-box does not support bonded interfaces, I have 
added support in my version of Astlinux (on my Github, in the develop branch).

I have bonded interfaces on both my WAN and LAN.  The WAN has two ethernet 
cables connecting to my cable modem.  The LAN has two ethernet cables connected 
to my switch that is configured with a LAG (link aggregation group), you need a 
managed switch that supports LAG.  I did it because my Comcast/Xfinity service 
will deliver 1.4Gbps download speeds, and one ethernet cable maxes out at just 
under 1Gbps, so to get the most out of my internet service I need to be able to 
pump more through the Astlinux gateway than a single cable will allow.  But you 
also get redundancy, disconnect one of the two bonded cables and the system 
doesn't miss a beat (but max throughput drops to 1Gbps).

David

On Wed, Feb 2, 2022 at 6:28 PM Michael Knill 
<michael.kn...@ipcsolutions.com.au<mailto:michael.kn...@ipcsolutions.com.au>> 
wrote:
Hi Lonnie

It's the firewalls that are configured for failover using FireCluster. They use 
VRRP as I just found out:
https://www.watchguard.com/help/docs/help-center/en-US/Content/en-US/Fireware/ha/cluster_ap_cluster_id_wsm.html?Highlight=firecluster%20mac%20address

Regards
Michael Knill

On 3/2/22, 9:23 am, "Lonnie Abelbeck" 
<li...@lonnie.abelbeck.com<mailto:li...@lonnie.abelbeck.com>> wrote:

    Interesting, but I don't quite understand how the upstream multihomed link 
works.

    If the AstLinux WAN bridge interface has a static IP and gateway, how is 
this a failover situation ... unless like you mentioned a VRRP (keepalived) 
setup.

    Is the AstLinux static gateway IP ARP'ing to different MACs depending on 
some magic upstream?  All in the same subnet?

    If "yes" above, then this would indeed be a special case where you would 
want the WAN to be a bridge interface.

    Lonnie


    > On Feb 2, 2022, at 4:04 PM, Michael Knill 
<michael.kn...@ipcsolutions.com.au<mailto:michael.kn...@ipcsolutions.com.au>> 
wrote:
    >
    > It's a static address with the gateway address shared on the firewalls as 
active and standby. Not sure if they have a virtual address like VRRP but 
doesn't make any difference from Astlinux's perspective.
    > I did some testing and all seemed to work. Its on a Qotom box so I assume 
performance should not be an issue.
    >
    > Regards
    > Michael Knill
    >
    > On 3/2/22, 9:00 am, "Lonnie Abelbeck" 
<li...@lonnie.abelbeck.com<mailto:li...@lonnie.abelbeck.com>> wrote:
    >
    >    Hi Michael,
    >
    >    It would be a special case where you would want the WAN to be a bridge 
interface.
    >
    >    How is the WAN interface's IP address defined?
    >
    >    I'm not sure how your two WAN trunks are routed to your bridge 
interface.
    >
    >    But, if a 2-port ethernet switch would work, so should a 2-interface 
linux bridge.
    >
    >    Lonnie
    >
    >
    >
    >
    >> On Feb 2, 2022, at 3:33 PM, Michael Knill 
<michael.kn...@ipcsolutions.com.au<mailto:michael.kn...@ipcsolutions.com.au>> 
wrote:
    >>
    >> Hi Group
    >>
    >> I have set up two ports on my Astlinux box into a bridge and allocated 
to the WAN interface. These ports are connected behind a primary and failover 
Watchguard firewall as a DMZ interface. The LAN interface connects to the Voice 
VLAN making this system a VPN router only for about 70 phones.
    >>
    >> Just wanting to know if anyone can see any issues with this architecture 
as I haven’t used bridge interfaces before.
    >> It just seems better than sticking a switch in between creating another 
single point of failure.
    >>
    >> Regards
    >>
    >> Michael Knill
    >> Managing Director
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