[asterisk-users] 2 NICs; Asterisk receives on eth1 and replieson eth0

[Douglas Garstang]

Yes, we tried to do the same thing. We wanted our Asterisk system to be multi-homed. Turned out to be a dissapointing limitation of Asterisk. It would have been nice to have, because then you could have multiple NIC's, have Asterisk listen on both, and if one failed, you had some degree of redundancy. But nope, no go.

	-----Original Message----- 
	From: Daniel Lawson [mailto:daniel at meta.net.nz] 
	Sent: Mon 7/10/2006 11:21 PM 
	To: kjcsb; Asterisk Users Mailing List - Non-Commercial Discussion 
	Cc: 
	Subject: Re: [asterisk-users] 2 NICs; Asterisk receives on eth1 and replieson eth0
	
	

	kjcsb wrote:
	> I have an Asterisk server with 2 network cards. One provides the LAN
	> connection and the other provides the Internet connection. Currently
	> this is set up in the following way:
	>
	> eth0 192.168.1.5. This provides LAN connectivity
	>
	> eth1 192.168.1.251, gw 192.168.1.252 (Note that other nodes on the
	> network use a different gateway, not 192.168.1.252). This provides the
	> internet connection. The router is set up with DMZ enabled and
	> pointing to 192.168.1.251.
	
	I am going to assume you are using a netmask of 255.255.255.0 above, as
	you haven't specified it.
	
	You can't have both interfaces being on the same network. This is why
	you are having this problem. I'd suggest making the Asterisk -> upstream
	link inside a different network, such as 192.168.2.xxx.
	
	EG:
	
	eth0 192.168.1.25   LAN
	
	eth1 192.168.2.1  gw 192.168.2.254        
	set the router up with DMZ enabled and pointing to 192.168.2.1
	
	
	I'd also suggest you  connect eth1 on the asterisk box directly to the
	gateway, and don't plug them into your LAN switch. You may need to use a
	crossover cable to do this.
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