RE: (usr-tc) Static Routing Question
Jeff/Mike, Maybe yes, maybe no. The route Mike is adding has a /32 mask, he doesn't say what the mask is on the HARC ethernet interface already. The mask is very likely wider than that to provide server IP address space. All depends what that existing mask is. We are agreed anyway that IP aliasing is a possible alternative. For Mike's information, IP aliasing is a technique where you give the server more than one IP address. By giving it an address from another subnet, you can beat the rules. You also need to create an IP alias on the HARC ethernet interface by adding a new network to the interface. How it's all done will depend very much on the type of server type, Unix/NT/Other. Might be a good idea to take this off-line if we're getting down to details! Regards, Colin Also sprach Colin Wantling >But 10.1.1.9 and 10.1.1.12 are on the same subnet. Bah! Get that classful crap out of your head! :) The IP address 10.1.1.12 is most definitely not in 10.1.1.9/32. >The Harc gets packets to the local destination using the MAC address on >the local subnet. For a directly connected route, yes. There's no reason that you shouldn't be able to have a more specific static route though. >IP aliasing might provide a way to do what you want. Kludge at best, but until 3Com fixes the code...this is probably how I would pursue it as well. -- 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. - 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.
Also sprach Colin Wantling
Maybe yes, maybe no.
No "maybe" to it...as long as the next-hop of the route isn't within the route itself, there's no problem. 10.1.1.12 isn't within 10.1.1.9/32, so there's no problem. Even if it were, its *possible* to even get that to work...but there's not a "standard" way of doing it. If you put the /32 in there, its gonna be the most specific route, so it will (should) be referenced before any shorter length match. At that point, the only questions are, "Is the next-hop reachable?" There's another route that is valid for the next-hop address (locally connected), so yes. "Is there a higher precedence route of the same mask length (ie, /32)?" Possible, but unlikely.
The route Mike is adding has a /32 mask, he doesn't say what the mask is on the HARC ethernet interface already.
Doesn't matter. As long as the next-hop for the /32 route is reachable, it should be accepted. Even if the next-hop isn't reachable, the route should probably be accepted...just not entered into the active routing table.
By giving it an address from another subnet, you can beat the rules.
s/rules/bugs/ :) -- 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.
participants (2)
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Colin Wantling -
Jeff Mcadams