nanog mailing list archives
Re: two interfaces one subnet
From: Hector Herrera <hectorherrera () gmail com>
Date: Mon, 11 May 2009 14:28:07 -0700
On Mon, May 11, 2009 at 2:22 PM, David Devereaux-Weber <ddevereauxweber () gmail com> wrote:
Chris, I work with iHDTV <http://ihdtv.org>, a project that sends uncompressed high definition television (1.5 Gbps) as UDP over two 1 Gbps interfaces. If both interfaces are on the same subnet, the OS sees the same router (gateway) address on both interfaces, and the results are sub-optimal ... around 50% packet loss.
packet loss is probably due to the network switch having to re-learn the location of the MAC address constantly as it sees packets on two or more ports with the same MAC address (think STP loops). If your network stack and network device (switch) supports LACP, then you can have multiple connections between a host and a network device. That is a very easy way to increase capacity and add redundancy. That is how all of our VMWare ESX 3.5i servers are connected. Hector
Current thread:
- Re: two interfaces one subnet, (continued)
- Re: two interfaces one subnet Chris Meidinger (May 11)
- Re: two interfaces one subnet Brielle Bruns (May 11)
- Re: two interfaces one subnet Kevin Oberman (May 11)
- Re: two interfaces one subnet Chris Meidinger (May 11)
- Re: two interfaces one subnet Patrick W. Gilmore (May 11)
- Re: two interfaces one subnet Arnold Nipper (May 11)
- Re: two interfaces one subnet Patrick W. Gilmore (May 11)
- Re: two interfaces one subnet Arnold Nipper (May 11)
- Re: two interfaces one subnet Patrick W. Gilmore (May 11)
- Re: two interfaces one subnet Chris Meidinger (May 11)
- Re: two interfaces one subnet Hector Herrera (May 11)
- Re: two interfaces one subnet Ben Scott (May 11)
- Re: two interfaces one subnet Patrick W. Gilmore (May 11)
- Re: two interfaces one subnet Ben Scott (May 11)
- Re: two interfaces one subnet James Hess (May 11)
- Re: two interfaces one subnet David Coulson (May 11)
- Re: two interfaces one subnet Chris Adams (May 11)