Now problem is I got 71.xx.xx.0/24 subnet from my ISP and i am going to cookie cut to extract 4 IP address for internal Point to Point link and my whole subnetting getting screwed up :( my plan for i will cut /24 in two piece 0-127 & 128-254 but now i need to use public space on WAN so i need to 4 IP address from that :(
This is mess.. :( i wish i can use private IP in point to point link :) On Fri, Jun 24, 2016 at 2:00 PM, Nick Cutting <[email protected]> wrote: > Good move > > > > Only the two devices need to support it > > > > ASA will not, Cisco IOS/XR/XE will > > > > But hey I’m probably one of the only humans running BGP on an ASA )) > > > > From: Satish Patel [mailto:[email protected]] > Sent: Friday, June 24, 2016 1:49 PM > To: Brian Turnbow > Cc: Nick Cutting; Cisco Network Service Providers > > > Subject: Re: [c-nsp] Private IP in point to point link on internet > > > > not going into hassle so i decided to use /31 subnet with public IP > address. can i assigned following IPs > > 71.xx.xx.xx.254/31 <------p2p-------> 71.xx.xx.xx.255/31 > > Its working but question is there won't be any issue right? just > asking to make sure it's safe > > On Fri, Jun 24, 2016 at 3:35 AM, Brian Turnbow <[email protected]> wrote: >> Yes it was allocated for cgn use inside a service provider network. >> You cannot route it towards the internet, but it may be used inside the >> network >> At least your customers will think its a public IP when they run >> traceroutes >> outbound >> >> Brian >> >> >> >>> -----Original Message----- >>> From: Nick Cutting [mailto:[email protected]] >>> Sent: mercoledì 22 giugno 2016 22:33 >>> To: Satish Patel; Brian Turnbow; Cisco Network Service Providers >>> Subject: RE: [c-nsp] Private IP in point to point link on internet >>> >>> That space also "should" be non-routable over the internet - I know a few >>> sneaky enterprises using it, - wasn’t that carved out for CGN? >>> >>> -----Original Message----- >>> From: cisco-nsp [mailto:[email protected]] On Behalf Of >>> Satish Patel >>> Sent: Wednesday, June 22, 2016 4:19 PM >>> To: Brian Turnbow; Cisco Network Service Providers >>> Subject: Re: [c-nsp] Private IP in point to point link on internet >>> >>> This is new too me! never heard before. do we can use 100.64.0.0/16 on >>> Point to point WAN link?? >>> >>> On Wed, Jun 22, 2016 at 8:50 AM, Brian Turnbow <[email protected]> >>> wrote: >>> > Hi Satich, >>> > >>> > In your position I would consider using shared address space instead >>> > of private address space. >>> > https://tools.ietf.org/html/rfc6598 >>> > >>> > Best Regards >>> > >>> > Brian >>> > >>> > >>> >> -----Original Message----- >>> >> From: cisco-nsp [mailto:[email protected]] On Behalf >>> >> Of Satish Patel >>> >> Sent: martedě 21 giugno 2016 04:53 >>> >> To: Cisco Network Service Providers >>> >> Subject: [c-nsp] Private IP in point to point link on internet >>> >> >>> >> This is weird question but i thought let me get opinion from you guys. >>> >> We have following scenario >>> >> >>> >> [ISP]------<Public-IP>-----[Router]-------<Private-IP>-------[L3 >>> >> Switch]------------[Hosts] >>> >> >>> >> >>> >> In above diagram we get /24 subnet from ISP for hosts, Now i want to >>> >> configure routed network between [Router] and [L3 switch] so can i >>> >> use Private IP address (rfc1981) like 192.168.100.1/30 instead of >>> >> Public IP address, to save public IP address in point to point link. >>> >> what would be >>> > the >>> >> disadvantage i will get doing that? >>> >> _______________________________________________ >>> >> cisco-nsp mailing list [email protected] >>> >> https://puck.nether.net/mailman/listinfo/cisco-nsp >>> >> archive at http://puck.nether.net/pipermail/cisco-nsp/ >>> _______________________________________________ >>> cisco-nsp mailing list [email protected] >>> https://puck.nether.net/mailman/listinfo/cisco-nsp >>> archive at http://puck.nether.net/pipermail/cisco-nsp/ > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
