Re: /31 mask address
Has anyone used /31 mask addresses on their network? Yes, works fine (on an all Cisco network). Maybe not interesting for an ISP, but I'm using it on a vlan interface on a 6500/7600. It works fine with IOS 12.1.8-EX5, but 12.1.11-E1 refused the configuration because it's not a p2p interface. I know, documentation only talks about p2p, but sometimes I don't like when a feature gets fixed... Andras
Re: /31 mask address
On Mon May 06, 2002 at 01:35:34PM +0200, JAKO Andras wrote: Yes, works fine (on an all Cisco network). Maybe not interesting for an ISP, but I'm using it on a vlan interface on a 6500/7600. It works fine with IOS 12.1.8-EX5, but 12.1.11-E1 refused the configuration because it's not a p2p interface. I know, documentation only talks about p2p, but sometimes I don't like when a feature gets fixed... Indeed, I found this on Saturday! GSR would let me put a /31 on the ethernet port, but the 6509 at the other end of the ethernet wouldn't. Simon -- Simon Lockhart | Tel: +44 (0)1737 839676 Internet Engineering Manager | Fax: +44 (0)1737 839516 BBC Internet Services| Email: [EMAIL PROTECTED] Kingswood Warren,Tadworth,Surrey,UK | URL: http://support.bbc.co.uk/
/31 mask address
Has anyone used /31 mask addresses on their network? Toan
Re: /31 mask address
On Fri May 03, 2002 at 04:24:16PM -0400, Toan Do wrote: Has anyone used /31 mask addresses on their network? Yes, works fine (on an all Cisco network). We're starting to use /31's on internal links. Links to third parties are still /30's, as most other people are still wary. Simon -- Simon Lockhart | Tel: +44 (0)1737 839676 Internet Engineering Manager | Fax: +44 (0)1737 839516 BBC Internet Services| Email: [EMAIL PROTECTED] Kingswood Warren,Tadworth,Surrey,UK | URL: http://support.bbc.co.uk/
Re: /31 mask address
Hi Simon, What IOS are you using /31s with ? André - Original Message - From: Simon Lockhart [EMAIL PROTECTED] To: Toan Do [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Sent: Friday, May 03, 2002 10:26 PM Subject: Re: /31 mask address On Fri May 03, 2002 at 04:24:16PM -0400, Toan Do wrote: Has anyone used /31 mask addresses on their network? Yes, works fine (on an all Cisco network). We're starting to use /31's on internal links. Links to third parties are still /30's, as most other people are still wary. Simon -- Simon Lockhart | Tel: +44 (0)1737 839676 Internet Engineering Manager | Fax: +44 (0)1737 839516 BBC Internet Services| Email: [EMAIL PROTECTED] Kingswood Warren,Tadworth,Surrey,UK | URL: http://support.bbc.co.uk/
Re: /31 mask address
On Fri May 03, 2002 at 10:30:05PM +0200, Andre Chapuis wrote: What IOS are you using /31s with ? Typically 12.0(x)S on GSR and VXR (where x is 10ish upwards) Simon -- Simon Lockhart | Tel: +44 (0)1737 839676 Internet Engineering Manager | Fax: +44 (0)1737 839516 BBC Internet Services| Email: [EMAIL PROTECTED] Kingswood Warren,Tadworth,Surrey,UK | URL: http://support.bbc.co.uk/
Re: /31 mask address
Andre Chapuis wrote: For what purpose can this be used? Can a point to point link function with this subnet mask? It would be ok if the requirement for a network and broadcast IP were removed. Regards, Mannu Hi Simon, What IOS are you using /31s with ? André - Original Message - From: Simon Lockhart [EMAIL PROTECTED] To: Toan Do [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Sent: Friday, May 03, 2002 10:26 PM Subject: Re: /31 mask address On Fri May 03, 2002 at 04:24:16PM -0400, Toan Do wrote: Has anyone used /31 mask addresses on their network? Yes, works fine (on an all Cisco network). We're starting to use /31's on internal links. Links to third parties are still /30's, as most other people are still wary. Simon -- Simon Lockhart | Tel: +44 (0)1737 839676 Internet Engineering Manager | Fax: +44 (0)1737 839516 BBC Internet Services| Email: [EMAIL PROTECTED] Kingswood Warren,Tadworth,Surrey,UK | URL: http://support.bbc.co.uk/
Re: /31 mask address
Do you really need broadcasts on your p2p links ? I do not.. André - Original Message - From: Manolo Hernandez [EMAIL PROTECTED] To: Andre Chapuis [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Sent: Friday, May 03, 2002 10:46 PM Subject: Re: /31 mask address Andre Chapuis wrote: For what purpose can this be used? Can a point to point link function with this subnet mask? It would be ok if the requirement for a network and broadcast IP were removed. Regards, Mannu Hi Simon, What IOS are you using /31s with ? André - Original Message - From: Simon Lockhart [EMAIL PROTECTED] To: Toan Do [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Sent: Friday, May 03, 2002 10:26 PM Subject: Re: /31 mask address On Fri May 03, 2002 at 04:24:16PM -0400, Toan Do wrote: Has anyone used /31 mask addresses on their network? Yes, works fine (on an all Cisco network). We're starting to use /31's on internal links. Links to third parties are still /30's, as most other people are still wary. Simon -- Simon Lockhart | Tel: +44 (0)1737 839676 Internet Engineering Manager | Fax: +44 (0)1737 839516 BBC Internet Services| Email: [EMAIL PROTECTED] Kingswood Warren,Tadworth,Surrey,UK | URL: http://support.bbc.co.uk/
Re: /31 mask address
Simon Lockhart [EMAIL PROTECTED] writes: On Fri May 03, 2002 at 10:30:05PM +0200, Andre Chapuis wrote: What IOS are you using /31s with ? Typically 12.0(x)S on GSR and VXR (where x is 10ish upwards) Not all 12.1(x)y does this properly, even if it was compiled over a year after that RFC went through and caused changes to 12.0S. Caveat utilitor. ---Rob
Re: /31 mask address
hmmm, as long as you allow directed broadcast on the interfaces... it should work... On 3 May 2002 at 16:24, Toan Do wrote: Has anyone used /31 mask addresses on their network? Toan -- Miguel Mata-Cardona Intercom El Salvador [EMAIL PROTECTED]
