Re: [dhcwg] Cost of multicast [was Re: Brokenness of specs w.r.t. client behavior with MO bits]

2008-10-28 Thread David W. Hankins
On Fri, Oct 24, 2008 at 11:23:55AM +0900, hyunwook cha wrote: What if DHCPv6 servers do not exist? AFAIK, in this thread, the cost of unnecessary multicast DHCPv6 messages which may be prevented through MO bits are being discussed. That's a separate issue. Iljitsch is proposing that

Re: [dhcwg] Cost of multicast [was Re: Brokenness of specs w.r.t. client behavior with MO bits]

2008-10-28 Thread Iljitsch van Beijnum
On 24 okt 2008, at 18:38, David W. Hankins wrote: What if DHCPv6 servers do not exist? AFAIK, in this thread, the cost of unnecessary multicast DHCPv6 messages which may be prevented through MO bits are being discussed. That's a separate issue. Iljitsch is proposing that Multicasts must be

Re: [dhcwg] Cost of multicast [was Re: Brokenness of specs w.r.t. client behavior with MO bits]

2008-10-28 Thread David W. Hankins
On Tue, Oct 28, 2008 at 04:18:48PM +0100, Iljitsch van Beijnum wrote: Obviously multicasts are useful so I'm not saying we can't have any. But in I just want to say that what I'm actually hearing in this is that you'll waffle on the performance criteria you invented so long as it means you get

Re: [dhcwg] Cost of multicast [was Re: Brokenness of specs w.r.t. client behavior with MO bits]

2008-10-23 Thread David W. Hankins
Just a few things that I think are potential factual errors or misreads that need clarifying. On Tue, Oct 14, 2008 at 09:48:42AM +0200, Iljitsch van Beijnum wrote: It's not a question of problematic yes/no. More multicasts means less performance for other stuff. Obviously ARP and ND already

Re: [dhcwg] Cost of multicast [was Re: Brokenness of specs w.r.t. client behavior with MO bits]

2008-10-23 Thread Iljitsch van Beijnum
Replying to your change of subject, not (necessarily) the message itself: At the last IETF meeting, I captured a bunch of wireless traffic during the plenary with the idea to analyze the broadcasts to see how much airtime they take up. Unfortunately, I didn't get around to it and deleted

Re: [dhcwg] Cost of multicast [was Re: Brokenness of specs w.r.t. client behavior with MO bits]

2008-10-23 Thread hyunwook cha
Hello, David. A few comments are inserted. 2008/10/23 David W. Hankins [EMAIL PROTECTED]: Just a few things that I think are potential factual errors or misreads that need clarifying. On Tue, Oct 14, 2008 at 09:48:42AM +0200, Iljitsch van Beijnum wrote: It's not a question of problematic

Re: Cost of multicast [was Re: Brokenness of specs w.r.t. client behavior with MO bits]

2008-10-15 Thread Mark Smith
On Tue, 14 Oct 2008 09:48:42 +0200 Iljitsch van Beijnum [EMAIL PROTECTED] wrote: On 13 okt 2008, at 22:59, Thomas Narten wrote: So, clients will retransmit about once every 2 minutes. But they'll transmit packets more frequently initially. This is unnecessary multicast traffic that

Re: Cost of multicast [was Re: Brokenness of specs w.r.t. client behavior with MO bits]

2008-10-14 Thread Iljitsch van Beijnum
On 13 okt 2008, at 22:59, Thomas Narten wrote: So, clients will retransmit about once every 2 minutes. But they'll transmit packets more frequently initially. This is unnecessary multicast traffic that could easily affect wifi performance because on 802.11 multicasts are generally sent at

Re: Cost of multicast [was Re: Brokenness of specs w.r.t. client behavior with MO bits]

2008-10-14 Thread Thomas Narten
Iljitsch van Beijnum [EMAIL PROTECTED] writes: On 13 okt 2008, at 22:59, Thomas Narten wrote: So, clients will retransmit about once every 2 minutes. But they'll transmit packets more frequently initially. Sure. It's not a question of problematic yes/no. More multicasts means less

Cost of multicast [was Re: Brokenness of specs w.r.t. client behavior with MO bits]

2008-10-13 Thread Thomas Narten
Iljitsch van Beijnum [EMAIL PROTECTED] writes: On 13 okt 2008, at 18:19, Iljitsch van Beijnum wrote: I don't have any use for DHCPv6. I need a way to shut up DHCPv6 clients that may end up visiting my network. Running DHCPv6 in a network that doesn't support is is especially harmful