Also sprach Mike Andrews
On Wed, 30 May 2001, Jeff Mcadams wrote:
As long as he's not aggregating, he shouldn't have any trouble starting with the 0's address (especially since he's defining it as a /C, so they really wouldn't even be a 0's address for that ;)
Yeah, I'm just being overly conservative there. :) And I aggregate, so I don't have a billion host routes in my ospf setup.
Yeah...I've got maybe a couple of hundred routes in my OSPF domain...certainly not a killer, but it'd be nice to lessen that a bit. As I think I mentioned, I *do* summarize on the redistribution from RIPv2 to OSPF that I do in the Ciscos...so we're doing about the same thing...just in different spots. :)
I do that anyway, for efficiency's sake. A box with 9 PRI's on it has 3 pools of /25+/26+/27 instead of a /24... a full 15 PRI box would be /24+/26+/27. It helps make your case with ARIN easier when you go begging and pleading for another /20 or /19...
Hah! I don't even do mine on bit boundaries. I've got some with pools of 4 addresses, pools of 7 addresses, weird stuff like that. I've pulled remnants from different blocks at different times to make up the number of IP addresses that I needed on one of my systems...the wonders of routing protocols figures it all out and everything is quite happy. Well...here...I'll just show you: HiPer>> list ip poOLS IP ADDRESS POOLS Name Address Size InUse State Route Unused Status dialup 204.255.236.232/C 23 11 PUBLIC NO_AGGREGATE 0 ACTIVE dialup2 204.255.236.200/C 23 14 PUBLIC NO_AGGREGATE 0 ACTIVE dialup3 204.255.236.223/C 9 5 PUBLIC NO_AGGREGATE 0 ACTIVE dialup4 204.255.230.241/C 14 8 PUBLIC NO_AGGREGATE 0 ACTIVE dialup5 204.255.230.195/C 46 46 PUBLIC NO_AGGREGATE 0 ACTIVE dialup6 204.255.230.149/C 23 6 PUBLIC NO_AGGREGATE 0 ACTIVE dialup7 204.255.230.172/C 23 6 PUBLIC NO_AGGREGATE 0 ACTIVE dialup8 204.252.74.17/C 46 17 PUBLIC NO_AGGREGATE 0 ACTIVE HiPer>> Wacko isn't it? :) This box grew from originally only having one PRI to having 8 on it currently, and is likely to grow some more. The wonders of running an ISP on a shoestring. :) Someday, I'll go back and clean it all up so there's not these little netblock droppings all over the place...*shrug*. In the meantime, it all just works and it did definitely help when we went to ARIN for more space...(got a /20, FWIW). -- Jeff McAdams Email: jeffm@iglou.com Head Network Administrator Voice: (502) 966-3848 IgLou Internet Services (800) 436-4456 - To unsubscribe to usr-tc, send an email to "majordomo@xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.