Date: Fri, 2 Jan 2004 21:29:43 +0300 (MSK) From: "."@babolo.ru To: Stephane Raimbault <segr@hotmail.com> Cc: net@freebsd.org Subject: Re: VLAN MTU problem in 4.9 ? Message-ID: <1073068183.380806.13522.nullmailer@cicuta.babolo.ru> In-Reply-To: <Law10-F39Jt6H3xApp20004d98e@hotmail.com>
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> Setting the MTU to 1496 on the router vlan interfaces didn't seem to help > me... however put the MTU to 1496 on the servers on the VLAN itself seems to > resolve the problem. so in the current configuration the router vlan > interfaces are set to 1500 and the servers on those interfaces are set to > 1496. Seems to work for now. > > Now, this doesn't seem all that normal. Where can I go from here to > troubleshoot this more and provide more information that might be able to > resolve this problem... if it's a problem that is... You can't be free from tune all your net for vlan mtu: - all switches involved must be at least verifyed not to drop long frames or right route vlans if it can work with tag based vlans - all interfaces in selected vlan must support the same common mtu I know now, that xl interface can't pass 1504 frames and most 1G interfaces can don't know about another 100M interfaces
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