Re: [c-nsp] IP unnumbered vlan subinterfaces question

2009-08-04 Thread Michael Ulitskiy
. -- deejay -Original Message- From: cisco-nsp-boun...@puck.nether.net [mailto:cisco-nsp- boun...@puck.nether.net] On Behalf Of Michael Ulitskiy Sent: Monday, August 03, 2009 6:23 PM To: cisco-nsp@puck.nether.net Subject: Re: [c-nsp] IP unnumbered vlan subinterfaces question

[c-nsp] IP unnumbered vlan subinterfaces question

2009-08-03 Thread Michael Ulitskiy
Hello, Guys, are there any drawbacks of doing the following: interface Lo0 ip address 10.10.10.1 255.255.255.0 ! interface FastEthernet0/0.1 encapsulation dot1q 1 native ip unnumbered Lo0 ! ip route 10.10.10.0 255.255.255.0 FastEthernet0/0.1 ! as opposed to having ip address configured

Re: [c-nsp] IP unnumbered vlan subinterfaces question

2009-08-03 Thread Aaron
Loopback interfaces do not go down, so I'm not sure what benefit you are getting besides the ability to blackhole the 10.10.10.0/24 if the ethernet goes down. On Mon, Aug 3, 2009 at 11:09, Michael Ulitskiy mulits...@acedsl.com wrote: Hello, Guys, are there any drawbacks of doing the

Re: [c-nsp] IP unnumbered vlan subinterfaces question

2009-08-03 Thread Aaron
So you don't want to use another IP for loopback. Sorry, misunderstood. On Mon, Aug 3, 2009 at 11:29, Aaron dudep...@gmail.com wrote: Loopback interfaces do not go down, so I'm not sure what benefit you are getting besides the ability to blackhole the 10.10.10.0/24 if the ethernet goes down.

Re: [c-nsp] IP unnumbered vlan subinterfaces question

2009-08-03 Thread Rodney Dunn
Don't do it. It's a hack and there are other forwarding plane things that don't like it. Read as..it may or may not always work. Burn another /32 for your loopback. Rodney Aaron wrote: Loopback interfaces do not go down, so I'm not sure what benefit you are getting besides the ability to

Re: [c-nsp] IP unnumbered vlan subinterfaces question

2009-08-03 Thread Ivan Pepelnjak
03, 2009 5:10 PM To: cisco-nsp@puck.nether.net Subject: [c-nsp] IP unnumbered vlan subinterfaces question Hello, Guys, are there any drawbacks of doing the following: interface Lo0 ip address 10.10.10.1 255.255.255.0 ! interface FastEthernet0/0.1 encapsulation dot1q 1 native ip

Re: [c-nsp] IP unnumbered vlan subinterfaces question

2009-08-03 Thread Michael Ulitskiy
It's not about saving a /32. This is a CPE device and I was just trying to save myself administrative burden of maintaining another per-customer static ip assignment. I don't need dynamic routing protocol to run on those interfaces, but thanks for pointing it out anyway. Ok, if I have to do it

Re: [c-nsp] IP unnumbered vlan subinterfaces question

2009-08-03 Thread Brian Turnbow
Of Michael Ulitskiy Sent: lunedì 3 agosto 2009 17.10 To: cisco-nsp@puck.nether.net Subject: [c-nsp] IP unnumbered vlan subinterfaces question Hello, Guys, are there any drawbacks of doing the following: interface Lo0 ip address 10.10.10.1 255.255.255.0 ! interface FastEthernet0/0.1 encapsulation

Re: [c-nsp] IP unnumbered vlan subinterfaces question

2009-08-03 Thread Tomas Daniska
Of Michael Ulitskiy Sent: Monday, August 03, 2009 6:23 PM To: cisco-nsp@puck.nether.net Subject: Re: [c-nsp] IP unnumbered vlan subinterfaces question It's not about saving a /32. This is a CPE device and I was just trying to save myself administrative burden of maintaining another per-customer