Yes -----Original Message----- From: Public [mailto:public-bounces@talk.mikrotik.com.au] On Behalf Of Alex Samad Sent: Wednesday, 8 March 2017 8:46 AM To: MikroTik Australia Public List Subject: [MT-AU Public] CCR / Routeros Hi can they handle /31 networks ? Alex _______________________________________________ Public mailing list Public@talk.mikrotik.com.au http://talk.mikrotik.com.au/mailman/listinfo/public_talk.mikrotik.com.au
Hi Alex, They can also handle /32 networks - we actively use a setup like this: CCR: VLAN2, 192.168.1.1/32, network address 192.168.1.2 VLAN3, 192.168.1.1/32, network address 192.168.1.3 VLAN4, 192.168.1.1/32, network address 192.168.1.4 If the router at the other end is also a Mikrotik, you can do the same thing, eg: VLAN2, 192.168.1.2/32, network address 192.168.1.1 If the other end is NOT a Mikrotik, you can give the end device 192.168.1.2/24 with a gateway of 192.168.1.1 and then enable proxy arp on the CCR interface to allow routing between the IPs. Regards, Philip Loenneker | Network Engineer | TasmaNet -----Original Message----- From: Public [mailto:public-bounces@talk.mikrotik.com.au] On Behalf Of Paul Julian Sent: Wednesday, 8 March 2017 8:50 AM To: 'MikroTik Australia Public List' <public@talk.mikrotik.com.au> Subject: Re: [MT-AU Public] CCR / Routeros Yes -----Original Message----- From: Public [mailto:public-bounces@talk.mikrotik.com.au] On Behalf Of Alex Samad Sent: Wednesday, 8 March 2017 8:46 AM To: MikroTik Australia Public List Subject: [MT-AU Public] CCR / Routeros Hi can they handle /31 networks ? Alex _______________________________________________ Public mailing list Public@talk.mikrotik.com.au http://talk.mikrotik.com.au/mailman/listinfo/public_talk.mikrotik.com.au _______________________________________________ Public mailing list Public@talk.mikrotik.com.au http://talk.mikrotik.com.au/mailman/listinfo/public_talk.mikrotik.com.au
The previous replies are a bit misleading.. They 'can' use a /31, by munging it using the network address to specify the other end IP, however this can't be used for routing other than static routes, as you can't run OSPF or BGP over those IP's. Like Windows and MacOS, they need a minimum of a /30 for correct operation. On 8 March 2017 at 08:46, Alex Samad <alex@samad.com.au> wrote:
Hi
can they handle /31 networks ?
Alex _______________________________________________ Public mailing list Public@talk.mikrotik.com.au http://talk.mikrotik.com.au/mailman/listinfo/public_talk.mikrotik.com.au
-- Damien Gardner Jnr VK2TDG. Dip EE. GradIEAust rendrag@rendrag.net - http://www.rendrag.net/ -- We rode on the winds of the rising storm, We ran to the sounds of thunder. We danced among the lightning bolts, and tore the world asunder
Not properly. There is a hack in which you can specify the network address, however there are route propagation issues associated with doing it this way. Eg ip address add address=192.168.0.0/32 network=192.168.0.1 interface=ether1 comment="my fake 192.168.0.0/31" You don't need proxy-arp on these "dodgy" /31's if you specify the /31 on the other end. Remember subnet boundary start on even numbers so it would be best to ensure you follow these network boundarys. -----Original Message----- From: Public [mailto:public-bounces@talk.mikrotik.com.au] On Behalf Of Alex Samad Sent: Wednesday, March 8, 2017 8:16 AM To: MikroTik Australia Public List Subject: [MT-AU Public] CCR / Routeros Hi can they handle /31 networks ? Alex _______________________________________________ Public mailing list Public@talk.mikrotik.com.au http://talk.mikrotik.com.au/mailman/listinfo/public_talk.mikrotik.com.au
sounds better to use /30 then On 8 March 2017 at 19:36, Stavros Patiniotis <stavros@staff.esc.net.au> wrote:
Not properly.
There is a hack in which you can specify the network address, however there are route propagation issues associated with doing it this way.
Eg ip address add address=192.168.0.0/32 network=192.168.0.1 interface=ether1 comment="my fake 192.168.0.0/31"
You don't need proxy-arp on these "dodgy" /31's if you specify the /31 on the other end. Remember subnet boundary start on even numbers so it would be best to ensure you follow these network boundarys.
-----Original Message----- From: Public [mailto:public-bounces@talk.mikrotik.com.au] On Behalf Of Alex Samad Sent: Wednesday, March 8, 2017 8:16 AM To: MikroTik Australia Public List Subject: [MT-AU Public] CCR / Routeros
Hi
can they handle /31 networks ?
Alex _______________________________________________ Public mailing list Public@talk.mikrotik.com.au http://talk.mikrotik.com.au/mailman/listinfo/public_talk.mikrotik.com.au
_______________________________________________ Public mailing list Public@talk.mikrotik.com.au http://talk.mikrotik.com.au/mailman/listinfo/public_talk.mikrotik.com.au
Yes that was my experience when a provider offered a /31 it was problematic and I found it better to just ask them for a /30 and they said they had a few users who had mikrotik devices were asking for /30's. On Mar 9, 2017 07:48, "Alex Samad" <alex@samad.com.au> wrote:
sounds better to use /30 then
On 8 March 2017 at 19:36, Stavros Patiniotis <stavros@staff.esc.net.au> wrote:
Not properly.
There is a hack in which you can specify the network address, however there are route propagation issues associated with doing it this way.
Eg ip address add address=192.168.0.0/32 network=192.168.0.1 interface=ether1 comment="my fake 192.168.0.0/31"
You don't need proxy-arp on these "dodgy" /31's if you specify the /31 on the other end. Remember subnet boundary start on even numbers so it would be best to ensure you follow these network boundarys.
-----Original Message----- From: Public [mailto:public-bounces@talk.mikrotik.com.au] On Behalf Of Alex Samad Sent: Wednesday, March 8, 2017 8:16 AM To: MikroTik Australia Public List Subject: [MT-AU Public] CCR / Routeros
Hi
can they handle /31 networks ?
Alex _______________________________________________ Public mailing list Public@talk.mikrotik.com.au http://talk.mikrotik.com.au/mailman/listinfo/public_talk.mikrotik.com.au
_______________________________________________ Public mailing list Public@talk.mikrotik.com.au http://talk.mikrotik.com.au/mailman/listinfo/public_talk.mikrotik.com.au
_______________________________________________ Public mailing list Public@talk.mikrotik.com.au http://talk.mikrotik.com.au/mailman/listinfo/public_talk.mikrotik.com.au
participants (6)
-
Alex Samad -
Andrew Gilbett -
Damien Gardner Jnr -
Paul Julian -
Philip Loenneker -
Stavros Patiniotis