Re: [homenet] Roaming hosts [was: Routing protocol comparison document]

2015-02-25 Thread Curtis Villamizar
In message Mark Townsley writes: > When a host connects to a different link covered by a different subnet, > indeed it will require a new IP address. That's pretty fundamental to what > a subnet is. Hosts are getting better and better at handling multiple > addresses, of both versions, coming an

Re: [homenet] Roaming hosts [was: Routing protocol comparison document]

2015-02-23 Thread Mark Townsley
When a host connects to a different link covered by a different subnet, indeed it will require a new IP address. That's pretty fundamental to what a subnet is. Hosts are getting better and better at handling multiple addresses, of both versions, coming and going. MPTCP should continue to help in th

Re: [homenet] Roaming hosts [was: Routing protocol comparison document]

2015-02-23 Thread Mikael Abrahamsson
On Mon, 23 Feb 2015, Ole Troan wrote: are you replying to the point I made? cause fully functioning MHMP requires host support (read MP-TCP/session layer) regardless of moving or not. If I extrapolated correctly what Juliusz wrote, that is not what he had in mind. with regards to a proposa

Re: [homenet] Roaming hosts [was: Routing protocol comparison document]

2015-02-23 Thread Ole Troan
>>> On 21 Feb 2015, at 16:06 , Juliusz Chroboczek >>> wrote: >>> > The client is running a stub implementation of the routing protocol. >>> I thought we already had decided we didn't require changes to the host? >>> >>> We don't *require* changes to the host. We propose optional host

Re: [homenet] Roaming hosts [was: Routing protocol comparison document]

2015-02-23 Thread Mikael Abrahamsson
On Mon, 23 Feb 2015, Ole Troan wrote: On 21 Feb 2015, at 16:06 , Juliusz Chroboczek wrote: The client is running a stub implementation of the routing protocol. I thought we already had decided we didn't require changes to the host? We don't *require* changes to the host. We propose o

Re: [homenet] Roaming hosts [was: Routing protocol comparison document]

2015-02-23 Thread Ole Troan
> On 21 Feb 2015, at 16:06 , Juliusz Chroboczek > wrote: > >>> The client is running a stub implementation of the routing protocol. > >> I thought we already had decided we didn't require changes to the host? > > We don't *require* changes to the host. We propose optional host > modification

Re: [homenet] Roaming hosts [was: Routing protocol comparison document]

2015-02-21 Thread Toerless Eckert
On Sat, Feb 21, 2015 at 09:29:17PM +0100, Juliusz Chroboczek wrote: > >> (Recall that multicast is 2Mbit/s at the phy. 13ms for a full-size frame, > >> not counting the cost of collisions.) > > > Ok. But we also need a way to support fast router redundancy IMHO. > > Could you please explain what

Re: [homenet] Roaming hosts [was: Routing protocol comparison document]

2015-02-21 Thread Juliusz Chroboczek
>> (Recall that multicast is 2Mbit/s at the phy. 13ms for a full-size frame, >> not counting the cost of collisions.) > Ok. But we also need a way to support fast router redundancy IMHO. Could you please explain what you mean? -- Juliusz ___ homenet

Re: [homenet] Roaming hosts [was: Routing protocol comparison document]

2015-02-21 Thread Toerless Eckert
On Sat, Feb 21, 2015 at 08:48:29PM +0100, Juliusz Chroboczek wrote: > (Recall that multicast is 2Mbit/s at the phy. 13ms for a full-size frame, > not counting the cost of collisions.) Ok. But we also need a way to support fast router redundancy IMHO. Cheers Toerless > > Something as simple

Re: [homenet] Roaming hosts [was: Routing protocol comparison document]

2015-02-21 Thread Juliusz Chroboczek
> I am not sure how important it is to separate fast-hello from route > announcements for hosts. We may have <= 10 addresses on a host. Where would > be have a problem ? Radio congestion due to the announcements from the routers, which in RIP would be advertising the whole network every Update int

Re: [homenet] Roaming hosts [was: Routing protocol comparison document]

2015-02-21 Thread Toerless Eckert
Of course you're right, but let me play devils advocate for a bit: I am not sure how important it is to separate fast-hello from route announcements for hosts. We may have <= 10 addresses on a host. Where would be have a problem ? processing in the receiving router ? Something as simple as RIP

Re: [homenet] Roaming hosts [was: Routing protocol comparison document]

2015-02-21 Thread Juliusz Chroboczek
> I think i had tuned down the RIP hello interval. Impossible. It was the Update interval that you had tuned down. > I probably would prefer not to use one of the real routing protocols, but > something lightweight. RIP is a stupid routing protocol but just to > announce aliveness of host interf

Re: [homenet] Roaming hosts [was: Routing protocol comparison document]

2015-02-21 Thread Toerless Eckert
I ran RIP on ca. 50 multi-homed clients in the early 90'th wth /32 route injection for both addresses, which effectively was also used for what we'd call mobility today. Worked very good. Trying to remember the reconvergence time after link down... I think i had tuned down the RIP hello interval.

Re: [homenet] Roaming hosts [was: Routing protocol comparison document]

2015-02-21 Thread Juliusz Chroboczek
>> The client is running a stub implementation of the routing protocol. > I thought we already had decided we didn't require changes to the host? We don't *require* changes to the host. We propose optional host modifications that improve the user experience. The chairs will correct me if I'm wr

Re: [homenet] Roaming hosts [was: Routing protocol comparison document]

2015-02-21 Thread Mikael Abrahamsson
On Sat, 21 Feb 2015, Juliusz Chroboczek wrote: The client is running a stub implementation of the routing protocol. I thought we already had decided we didn't require changes to the host? -- Mikael Abrahamssonemail: swm...@swm.pp.se ___ homenet

[homenet] Roaming hosts [was: Routing protocol comparison document]

2015-02-21 Thread Juliusz Chroboczek
L3 - route injection (got a routing protocol there already, use it) >>> >>> This sounds like it needs at least a coordination protocol between the APs? >> >> NO, just between the first-hop (homenet) routers. Should work with unchanged >> of the shelf crap-APs as long as they're attached to a h