The way the IP pool is going to advertise depends on if you are aggregating the pool or not. Normally for public pools with non-aggregate option the pool size and class does not matter - for all address are addressed - host based. This being the case you setting up the pool with B/A/C class IP does not really matter. However if your pool is set to aggregate, the TC will look at the size of the IP pool and automatically advertise the proper network route - so if you have 64 address it will be a part of lower c class and in this case it will have a route of /26 network. IP polls for no aggregate does not make any sense. regards V ----- Original Message ----- From: "Jeff Mcadams" <jeffm@iglou.com> To: <usr-tc@lists.xmission.com> Sent: Saturday, April 29, 2000 8:59 AM Subject: Re: (usr-tc) IP Pools.
Also sprach Stephen Amadei
O.K... after a couple days of thought... and some guessing ;-), I have been able to "fool" the TC into giving me what I want... but is it going to bite me in the ass later:
I added my ip pool by using the class B designator:
add ip pool test initial_pool_address 216.133.96.0/B size 64
instead of:
add ip pool test initial_pool_address 216.133.96.0 size 64
And it allowed it. Is this going to have any odd side effects? Thanx in advance.
I believe it will take a chunk out of you if you try to advertise it as an aggregate. :) I *think* (if some nice 3Com person could back me up on this, it would be nice) that the network size designator controls what size network is advertized if you set it to do an aggregate advertisement. This means that you'd advertize the /16 that contains your IP pool space as an aggregate rather than the individual pool addresses. I'm not sure that this is what this control is there for, but if that's not the reason for it to be there, I'm not sure what other reason there could be. :/
You might try using "23" instead of "B" there. Or maybe "22" or something like that. That way, if you ever do set it to be an aggregate, at least its not as big of a chunk out of your rear-end. :) -- Jeff McAdams Email: jeffm@iglou.com Head Network Administrator Voice: (502) 966-3848 IgLou Internet Services (800) 436-4456
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