From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 20 Oct 2010 08:38:07 -0700 From: Stephen Hemminger Message-ID: <20101020083807.449c9ae5@nehalam> In-Reply-To: References: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: Re: [Bridge] VLAN traffic through an Ethernet Bridge List-Id: Linux Ethernet Bridging List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Erik Schweigert Cc: bridge@lists.linux-foundation.org On Tue, 19 Oct 2010 10:46:38 -0700 Erik Schweigert wrote: > Hello all, > > I have configured a transparent ethernet bridge containing two network > interfaces: eth0, eth1 in br0. IP forwarding is enabled i.e. cat > /proc/sys/net/ipv4/ip_forward = 1. This is irrelevant for bridging. > All traffic destined through my Linux machine has the 802.1Q tag > (VLAN). However, only ARP with the VLAN tags passes through the > machine correctly (100% of the time) and broadcast and multicast > appears to work. It 'seems' IP layer and above is being dropped if it > is unicast, or intermittently works ( +/- 1 of 10 ICMP passes > through). > > All non-VLAN'd traffic passes through my machine flawlessly. > > arptables, ebtables, and IPtables are all flushed, so there is no > possibility of any traffic being blocked. > > Is there a caveat with ethernet bridging that does not permit VLAN'd traffic? > > Any help or suggestions is greatly appreciated! > > Thanks, > > Erik Missing bits: 1. Kernel version? 2. Did you configure vlans on eth0 and eth1? 3. Is it an MTU issue? do small packets get through but not largere ones. 4. What is overall configuration of bridging and ethernets? Did you assign IP address to bridge or the ethernet devices.