October 2001 - lir-wg - mailman.ripe.net

RE: Multihoming - Resilience or Independence
by BLOCKI,JACEK (HP-Poland,ex1) 10 Oct '01

10 Oct '01

Hi, Decisions are based on both science and superstition. In my opinion requests to connect to "two independent ISPs" result mostly from superstition. BGP routing is not particularly good at servicing resilient links. If an access link to ISP fails it takes some time before routing reconfigures, we don't like route flaps do we?. In my opinion OSPF + 2 access links to 2 POPs of single ISP would do the you much better. I wonder why virtually nobody offers such a service? From my perspective an entity running LIR is responsible for both IP addressing and IP traffic shaping. An entity may wish to become a LIR for number of business reasons. RIR should not verify validity of those reasons, however RIR should verify if to-be LIR understand what he applies for. This may mean technical consultancy for free, but since RIPE is a non-profit organization raised membership fees have to be spent anyway ;-) Regards, Jacek

1 0

RE: more specific routes in today reality
by Lu, Ping 10 Oct '01

10 Oct '01

> > >> > >> Great! Now we have to collect routing policies from > thousands of small LIRs > >> while still have to deal with thousands of small prefixes. > > > So? There is no difference between thousands of PI prefixes and > > "thousands of small LIRs", except that the latter actually have to > > *pay* for what they cause. > > Right. Strong ACK on this. > So what do the small LIRs solve ? > >> And if the major ISPs stop listening to the more specfic > routes then even > >> using the address from PI space won't work (unless you are > big enough). > > > Yes. This is what it's all about. Small PI space really > hurts people. > > Yep. And therefore these "small" PI stuff should be cleaned > up. The User itself > can use it internally and could get a /24 routed from PA space. > > But it is really not the optimum solution, as it waste's ip > address space. And > we have enough RFC1918 space... > This is not enough but I am going to go with this solution. Then we will ask you to assign only aggregatable address( to a /20 of course) to your customer if they are going to use CW as a backup ISP. You will happily reassign their addresses once they got a link from CW, right ? If you don't then what ? CW will have to leak your /24 to the world but it is you causing it. On the other hand, if our customer ask you to be the backup ISP, we will ask them to change all their DNS records, all their host tables, all their static IP configs to change to the new aggregatable block. If they think this is too much hassle, we will advice them not to use your service because you don't accept /24 multi-homed customer. This sounds realistic enough ? > > Letting "the whole world" see a /16 (from the upstream) and > the direct > > peers a /24 (or whatever) means global routing will just > work fine (over > > the upstream's PA block) and and IX routing will also work just fine > > (using the more specific). > > right, but is it generally used ? > I see a lot of /24 out of the same block from a /16 announced > space globally > (AS5511 for example) > > Because it is not the solution to the real world, that's why people can only talk about it but not really to enforce it. Ping Lu Cable & Wireless USA Network Tools and Analysis Group W: +1-703-292-2359 E: plu(a)cw.net

1 0

RE: more specific routes in today reality
by Lu, Ping 10 Oct '01

10 Oct '01

> > > > Great! Now we have to collect routing policies from > thousands of small LIRs > > while still have to deal with thousands of small prefixes. > > So? There is no difference between thousands of PI prefixes and > "thousands of small LIRs", except that the latter actually have to > *pay* for what they cause. To syncronize between the major RIRs is already dufficult enough, to make sure thousands of small LIRs all have correct info is not worth the problem it is trying to solve. > > > > Now more and more major ISPs are filtering out routes from > other ISPs ( > > becuase we don't have > > transit agreements) so the multi-homed customer have to > have their own AS. > > No. This is an interesting arguments, but the fact that C&W > has problems > with some of their peers doesn't mean "the whole world has to drown in > multihomed ASes". Get your contracts right. > Maybe you will carry other ISP's transit routes and they can dump about several GB of traffic for you to pass thru. And you are asking ISP to spend tons of money to carry the traffic that other ISPs are making money of ? Compared to this solution I think multihomed ASes is more acceptable. > > And if the major ISPs stop listening to the more specfic > routes then even > > using the address from PI space won't work (unless you are > big enough). > > Yes. This is what it's all about. Small PI space really > hurts people. > The thing is any ISP can decide to only accept /20 and above and claim any routes beyond those are not important. The truth is the INTERNET is bandwidth oriented and business like IX and webhosting are high bandwidth but not prefixes hungry. But they are hurting because someone think they are not wasting IP addresses enough. So the advice is if for any reason you need a backup link from different ISPs you better claim a /20 even a /24 is enough. > > All these solutions kind of imply that if you can't have > /20 prefix then you > > can't be multi-homed. What happen if a customer want to > have an OC-48 > > multi-homed link but only use prefix < /20 (that happens to > the Internet > > Exchange people a lot ) ? > > So announce it to the internet exchange. Why does it have to > be visible > in the whole world? > > Letting "the whole world" see a /16 (from the upstream) and the direct > peers a /24 (or whatever) means global routing will just work > fine (over > the upstream's PA block) and and IX routing will also work just fine > (using the more specific). > > Bad example. > So if a end-user uses one ISP's /24 from their PA space and he want to divide 50-50 traffic with a second ISP then what ? The second ISP will say no /24 allowed so can you ask the first ISP to assign a /20 ? (Don't worry CW will happily accept your /24) Even worse example. Ping Lu Cable & Wireless USA Network Tools and Analysis Group W: +1-703-292-2359 E: plu(a)cw.net

1 0

RE: more specific routes in today reality
by Lu, Ping 10 Oct '01

10 Oct '01

Comments followed. > > Hi, > > On Tue, Oct 09, 2001 at 09:13:05PM +0200, Jan-Ahrent-Czmok wrote: > > Some providers are multihomed > > but cannot cover the costs, even for a small lir. > > If you want to be multihomed, the costs for routers & co. are > far higher > than for being LIR. If you can't afford being LIR, be single-homed. > Great! Now we have to collect routing policies from thousands of small LIRs while still have to deal with thousands of small prefixes. > > Nonsense. Nobody is announcing 192.0.0.0/8, or supernets of other's > networks - and what is in the RIPE database doesn't affect routing. > > To show the first few things from 192/8: > > *>i192.0.32.0 195.158.244.133 100 0 > 1755 1239 5676 226 > i > *>i192.0.34.0 195.158.244.133 100 0 > 1755 1239 5676 226 > i > * i192.0.36.0 195.206.66.61 3 100 0 > 3300 701 2914 20144 > i > *>i 195.158.244.133 100 0 > 1755 1239 2914 2014 > 4 i > * i192.1.0.0/16 195.206.66.61 3 100 0 > 3300 701 1 i > *>i 195.158.244.133 100 0 > 1755 1239 1 i > * i192.2.0.0/16 195.206.66.61 3 100 0 > 3300 701 1 i > *>i 195.158.244.133 100 0 > 1755 1239 1 i > > so if I filter those, why should the traffic go to XLink? > Why should > *any* traffic go to RIPE? It will be just blackholed (or > default-routed > to one of my upstreams, if I happen to have a default-route). > > Please do your homework about routing and BGP before selling people > consulting about multihoming. > Now more and more major ISPs are filtering out routes from other ISPs ( becuase we don't have transit agreements) so the multi-homed customer have to have their own AS. And if the major ISPs stop listening to the more specfic routes then even using the address from PI space won't work (unless you are big enough). All these solutions kind of imply that if you can't have /20 prefix then you can't be multi-homed. What happen if a customer want to have an OC-48 multi-homed link but only use prefix < /20 (that happens to the Internet Exchange people a lot ) ? Ping Lu Cable & Wireless USA Network Tools and Analysis Group W: +1-703-292-2359 E: plu(a)cw.net

3 3

automatic DB cleanup proposal
by kieber＠gatel.net 09 Oct '01

09 Oct '01

Re everybody, following up to some personal talks during the RIPE meeting I propose an automatic cleanup of orphaned person and role objects in the RIPE DB. Motivation ---------- In the light of data privacy issues raised by governmental organizations and in RIPE Database Working Group sessions during RIPE-39 and RIPE-40, as well as following the Great Dangling Person Objects Deletion after de.* ccTLD move-out I propose an automized garbage collection procedure to remove personal data that is unreferenced for a certain amount of time. Proposed Change --------------- An additional attibute ``expire:'' with two values should be added to all person and role objects. The values to this attribute would be a reference counter and a modification timestamp. The reference counter would contain the number of objects still refering to this object, and thus be analog to the link counter of an inode in a UNIX file system. The modification timestamp would be updated whenever the object is updated or the link counter changes. The analogy in the UNIX file system would be sort of a mix of ctime and mtime. Both values could be combined into a single value, but each value of it's own may be of interest to some people. Combining both values would leave the resulting value useless to human interpretation. A garbage collection process running on a periodic basis should then delete all objects with a reference counter of ``0'' and a modification timestamp of more than e.g. 8000000 seconds (approx. 3 month) ago. The expiration period is to be discussed and agreed upon in the community. An additional switch to the whois client should be added to make the otherwise invisible attribute visible, the DB should consequently not accept ``expire:'' attributes in updates. (The DB could certainly be made more forgiving about this, but since the move to v.3 tightened the syntax we should probably not weaken it again.) Database Objects affected ------------------------- An additional attribute would be added to all person and role objects. role: [mandatory] [single] [lookup key] address: [mandatory] [multiple] [ ] phone: [optional] [multiple] [ ] fax-no: [optional] [multiple] [ ] e-mail: [mandatory] [multiple] [lookup key] trouble: [optional] [multiple] [ ] admin-c: [mandatory] [multiple] [inverse key] tech-c: [mandatory] [multiple] [inverse key] nic-hdl: [mandatory] [single] [primary/look-up key] remarks: [optional] [multiple] [ ] notify: [optional] [multiple] [inverse key] mnt-by: [optional] [multiple] [inverse key] expire: [generated] [single] [ ] changed: [mandatory] [multiple] [ ] source: [mandatory] [single] [ ] person: [mandatory] [single] [lookup key] address: [mandatory] [multiple] [ ] phone: [mandatory] [multiple] [ ] fax-no: [optional] [multiple] [ ] e-mail: [optional] [multiple] [lookup key] nic-hdl: [mandatory] [single] [primary/look-up key] remarks: [optional] [multiple] [ ] notify: [optional] [multiple] [inverse key] mnt-by: [optional] [multiple] [inverse key] expire: [generated] [single] [ ] changed: [mandatory] [multiple] [ ] source: [mandatory] [single] [ ] Example ------- inetnum: 10.0.0.0 - 10.0.255.255 netname: XMAS descr: Santa's Workshop Inc. Christmas Toys Manufacturing Facility Northern Nowhere country: NN admin-c: SC12-RIPE tech-c: SWT95-RIPE status: ASSIGNED PA mnt-by: SANTA-SECURITY-MNT changed: jbgood(a)antarctic.nn 19960412 source: RIPE role: Santa Workshop Team address: Santa's Workshop Inc. Jingle Bell Lane 12 1224CH Christmastown Northern Nowhere phone: +12 12 122 3333 fax-no: +12 12 221 4444 e-mail: team(a)antarctic.nn admin-c: SC12-RIPE tech-c: SC12-RIPE tech-c: RD212-RIPE nic-hdl: SWT95-RIPE mnt-by: SANTA-SECURITY-MNT expire: 1 849700000 changed: jbgood(a)antarctic.nn 19960412 source: RIPE person: Santa A. Claus address: Santa's Workshop Inc. Jingle Bell Lane 12 1224CH Christmastown Northern Nowhere phone: +12 12 122 2121 +12 12 122 2211 ext. 1221 fax-no: +12 12 221 1212 e-mail: santa(a)antarctic.nn nic-hdl: SC12-RIPE mnt-by: SANTA-SECURITY-MNT expire: 3 849700000 changed: jbgood(a)antarctic.nn 19960412 source: RIPE person: Rudolf R N Reindeer address: Santa's Workshop Inc. Jingle Bell Lane 21 1224CH Christmastown Northern Nowhere phone: +12 12 122 1111 fax-no: +12 12 122 2222 nic-hdl: RD212-RIPE e-mail: rudolf(a)xmas.nn mnt-by: SANTA-SECURITY-MNT expire: 1 849700000 changed: jbgood(a)antarctic.nn 19960412 source: RIPE -- Ulf Kieber email: kieber(a)gatel.net Senior Network Engineer voice: +49-69-299896-21 Global Access Telecommunications, Inc. fax : +49-69-299896-40 internet solutions for business www : www.gatel.net The Database Toothbrush Proposal

4 4

RE: more specific routes in today reality
by Boyan Krosnov 09 Oct '01

09 Oct '01

Hi, There are other solutions for multihoming with NAT but I think we are again hitting that NAT against no NAT issue. I think that I should say it now to avoid further flamewars. NAT is not always a possible solution. It may be good to use it in some cases but it is not in others. Those other cases are the ones that this discussion is about. Or at least I think so :) CCNP Boyan Krosnov Network Administrator Lirex Net phone: +359-2-91815 > -----Original Message----- > From: Mirta Matic [mailto:mirta.matic@hinet.hr] > Sent: Tuesday, October 09, 2001 4:55 PM > To: Sascha E. Pollok > Cc: Gert Doering; Vladimir A. Jakovenko; lir-wg(a)ripe.net; > routing-wg(a)ripe.net > Subject: Re: more specific routes in today reality > > > Hello, > > have you ever heard for RADWARE solution for that problem? > Some RADWARE box can check distance to destination via both > ISP's and makes > decision from what IP address range have to get address for > NAT (of course, > customer have to have two ranges of addresses). If connection > via one ISP > failed, all traffic will be rerouted via another using IP > address from IP > address range of that ISP. > > Mirta Matic > mirta.matic(a)hinet.hr > > tel: +385 1 4914 207 > fax: +385 1 4914 222

1 0

Re: automatic DB cleanup proposal
by kieber＠gatel.net 09 Oct '01

09 Oct '01

Somebody @ RIPE NCC, speaking for himself, not for RIPE NCC, writes: > On 2001-10-08 20:02:38 +0200, Ulf Kieber wrote: > > > > The modification timestamp would be updated whenever the object is > > updated or the link counter changes. The analogy in the UNIX file > > system would be sort of a mix of ctime and mtime. > > <snip/> > > > expire: 1 849700000 > > I suggest that this look more like the timestamp in the changed > attribute: > > expire: 1 20011008 > > Human-readable == good. :) Seconded. Daily granularity is good enough, but way more readable. Make is so. > Perhaps this attribute should also be present on maintainer and irt > objects, since they contain contact information as well? Not > necessarily as important, but possible. Then we could put it onto key-cert as well. I'm sort of reluctent to have it placed onto maintainer objects which can not be recreated without interaction with the NCC. I'd at least ask for an extended expiration period. -- Ulf Kieber email: kieber(a)gatel.net Senior Network Engineer voice: +49-69-299896-21 Global Access Telecommunications, Inc. fax : +49-69-299896-40 internet solutions for business www : www.gatel.net

1 0

Re: automatic DB cleanup proposal
by Wilfried Woeber, UniVie/ACOnet 09 Oct '01

09 Oct '01

Dear George, >I am worried that there may be *external* referencees to objects, and while >we have no 'contractual' obligation it might not be nice to do this >to people without some engagement but I expect most people would welcome >losing a path to spam. without going into any detail of the proposal itself, I perceive the fact that there are external references (allowed) _without "consent" and without documentation_ a major flaw in the architecture. In fact, there are mechanisms available already (at least in the RIPE DB-SW V2.x and V3.x) that allow us to deal with that requirement: maintainer objects. >As to automatic sweeping, I think there are problems with link counting >which are similar to those we've faced in discussing cross-database linkage >and references. Too many risks of the link count getting out of whack. Fair enough, a very valid concern! But I think the proposal is trying to describe the "user view" and the "abstract behaviour". >I think you could use it as a guide to a sweep, but not as a determinant >without some review and other checks. Eg to trigger more exhaustive checks >to see if there are are references in twisty ways. I agree. >cheers > -George Cheers, and thanks for partcipating in this discussion! Wilfried.

1 0

Action list after RIPE 40
by Hans Petter Holen 05 Oct '01

05 Oct '01

35.4 NCC PGP Key exchange procedure Low prio 35.5 NCC Implement PGP for hm Low prio 36.5 Chair Assignment window applied on infrastructure New Policy 36.7 NCC Keep lir-wg updated on pre RIR address space changes Plenary presentation 38.2 NCC Implement changes to the form while taking into account the comments from the WG Pending 185 revision 38.3 WG Reopen policy discussion - do we need a major revision of RIPE 185 Ongoing 38.4 AC Consider how to coordinate Address prediction work Work launced 38.5 NCC Implement 34.6 LIR-ALLOCATED 38.6 HPH (NCC) Propose PI policy to the WG Ongoing 39.2 NCC Suggest procedure and possible policy changes DONE 39.4 Chairs Define & divide work 39.5 Chairs Beta test 6 weeks deadline for proposals Move to 2nd beta 40.1 NCC/ET RIPE 185 2nd draft 40.2 WG Further discuss MIR/SUB-LIR 40.2 NCC Implement new AW policy 40.3 WG Further discuss possible policy change for PI 40.4 RB AC Election Done 40.5 WG Join RFC2050 mailinglist to give input to revision 40.6 RIRs Produce drafts to replace 2050 for discussion by wg 40.7 RIRs Produce interim policy draft with the help of Arano-san & Mr Bush within 2 weeks 40.8 WG Further discuss final IPv6 policy 40.9 RIRs Set up global IPv6 policy list

1 0

My slides available on the WWW
by Dave Pratt 03 Oct '01

03 Oct '01

Hiya Folks, The slides for the presentation I gave this afternoon are available at: http://www.djp.net/ipv6/pr/ Cheers Dave

1 0