Re: vxlan(4) in endpoint mode
Le Mon, May 02, 2022 at 01:40:37PM +0100, Jason McIntyre a écrit : > On Mon, May 02, 2022 at 11:48:49AM +0200, Denis Fondras wrote: > > Le Mon, Apr 04, 2022 at 01:02:53PM +0200, Denis Fondras a ?crit : > > > Le Mon, Apr 04, 2022 at 08:23:35PM +1000, David Gwynne a ?crit : > > > > > > > > > > > > > On 3 Apr 2022, at 21:46, Denis Fondras wrote: > > > > > > > > > > Hi, > > > > > > > > > > In vxlan(4) manual, we have : > > > > > > > > > > endpoint mode > > > > > When configured without a tunnel destination address, vxlan > > > > > operates as > > > > > a bridge, but with learning disabled. > > > > > > > > > > > > > > > The question is : is it possible to set tunnel source address without > > > > > a > > > > > destination ? > > > > > > > > ifconfig vxlan0 tunneladdr 10.20.30.1 > > > > > > > > that should work. > > > > > > Thank you David. I will prepare a patch to the manual :) > > > > Here is a tentative to document the tunneladdr option. > > > > these options are sorted manually, so you want tunneladdr before > tunnelttl. > Thank you Jason. Here is an updated diff. Index: ifconfig.8 === RCS file: /cvs/src/sbin/ifconfig/ifconfig.8,v retrieving revision 1.381 diff -u -p -r1.381 ifconfig.8 --- ifconfig.8 29 Dec 2021 21:41:28 - 1.381 +++ ifconfig.8 2 May 2022 15:30:35 - @@ -1806,6 +1806,7 @@ for a complete list of the available pro .Op Oo Fl Oc Ns Cm keepalive Ar period count .Op Cm rxprio Ar prio .Op Oo Fl Oc Ns Cm tunnel Ar src_address dest_address +.Op Cm tunneladdr Ar src_address .Op Oo Fl Oc Ns Cm tunneldf .Op Oo Fl Oc Ns Cm tunneldomain Ar rtable .Op Cm tunnelttl Ar ttl @@ -1864,8 +1865,20 @@ Both addresses must be of the same famil The optional destination port can be specified for interfaces such as .Xr vxlan 4 , which further encapsulate the packets in UDP datagrams. +This directive is incompatible with +.Cm tunneladdr . .It Cm -tunnel Remove the source and destination tunnel addresses. +.It Cm tunneladdr Ar src_address +Set the outer IP address of the tunnel. +This is useful for point-to-multipoint tunnels where peers are in different +subnets like +.Xr vxlan 4 +endpoint mode or +.Xr mgre 4 . +It is incompatible with the +.Cm tunnel +directive. .It Cm tunneldf Do not allow fragmentation of encapsulated packets. .It Cm -tunneldf
Re: vxlan(4) in endpoint mode
On Mon, May 02, 2022 at 11:48:49AM +0200, Denis Fondras wrote: > Le Mon, Apr 04, 2022 at 01:02:53PM +0200, Denis Fondras a ?crit : > > Le Mon, Apr 04, 2022 at 08:23:35PM +1000, David Gwynne a ?crit : > > > > > > > > > > On 3 Apr 2022, at 21:46, Denis Fondras wrote: > > > > > > > > Hi, > > > > > > > > In vxlan(4) manual, we have : > > > > > > > > endpoint mode > > > > When configured without a tunnel destination address, vxlan > > > > operates as > > > > a bridge, but with learning disabled. > > > > > > > > > > > > The question is : is it possible to set tunnel source address without a > > > > destination ? > > > > > > ifconfig vxlan0 tunneladdr 10.20.30.1 > > > > > > that should work. > > > > Thank you David. I will prepare a patch to the manual :) > > Here is a tentative to document the tunneladdr option. > these options are sorted manually, so you want tunneladdr before tunnelttl. jmc > Index: ifconfig.8 > === > RCS file: /cvs/src/sbin/ifconfig/ifconfig.8,v > retrieving revision 1.381 > diff -u -p -r1.381 ifconfig.8 > --- ifconfig.829 Dec 2021 21:41:28 - 1.381 > +++ ifconfig.82 May 2022 09:46:10 - > @@ -1809,6 +1809,7 @@ for a complete list of the available pro > .Op Oo Fl Oc Ns Cm tunneldf > .Op Oo Fl Oc Ns Cm tunneldomain Ar rtable > .Op Cm tunnelttl Ar ttl > +.Op Cm tunneladdr Ar src_address > .Op Cm txprio Ar prio > .Op Oo Fl Oc Ns Cm vnetflowid > .Op Oo Fl Oc Ns Cm vnetid Ar network-id > @@ -1864,6 +1865,8 @@ Both addresses must be of the same famil > The optional destination port can be specified for interfaces such as > .Xr vxlan 4 , > which further encapsulate the packets in UDP datagrams. > +This directive is incompatible with > +.Cm tunneladdr . > .It Cm -tunnel > Remove the source and destination tunnel addresses. > .It Cm tunneldf > @@ -1888,6 +1891,16 @@ the value can also be set to > .Ar copy > to have the TTL copied between the encapsulated protocol headers > and the tunnel protocol headers. > +.It Cm tunneladdr Ar src_address > +Set the outer IP address of the tunnel. > +This is useful for point-to-multipoint tunnels where peers are in different > +subnets like > +.Xr vxlan 4 > +endpoint mode or > +.Xr mgre 4 . > +It is incompatible with the > +.Cm tunnel > +directive. > .It Cm txprio Ar prio > Configure the value used for the priority field in the tunnel > protocol headers. >
Re: vxlan(4) in endpoint mode
Le Mon, Apr 04, 2022 at 01:02:53PM +0200, Denis Fondras a écrit : > Le Mon, Apr 04, 2022 at 08:23:35PM +1000, David Gwynne a écrit : > > > > > > > On 3 Apr 2022, at 21:46, Denis Fondras wrote: > > > > > > Hi, > > > > > > In vxlan(4) manual, we have : > > > > > > endpoint mode > > > When configured without a tunnel destination address, vxlan operates as > > > a bridge, but with learning disabled. > > > > > > > > > The question is : is it possible to set tunnel source address without a > > > destination ? > > > > ifconfig vxlan0 tunneladdr 10.20.30.1 > > > > that should work. > > Thank you David. I will prepare a patch to the manual :) Here is a tentative to document the tunneladdr option. Index: ifconfig.8 === RCS file: /cvs/src/sbin/ifconfig/ifconfig.8,v retrieving revision 1.381 diff -u -p -r1.381 ifconfig.8 --- ifconfig.8 29 Dec 2021 21:41:28 - 1.381 +++ ifconfig.8 2 May 2022 09:46:10 - @@ -1809,6 +1809,7 @@ for a complete list of the available pro .Op Oo Fl Oc Ns Cm tunneldf .Op Oo Fl Oc Ns Cm tunneldomain Ar rtable .Op Cm tunnelttl Ar ttl +.Op Cm tunneladdr Ar src_address .Op Cm txprio Ar prio .Op Oo Fl Oc Ns Cm vnetflowid .Op Oo Fl Oc Ns Cm vnetid Ar network-id @@ -1864,6 +1865,8 @@ Both addresses must be of the same famil The optional destination port can be specified for interfaces such as .Xr vxlan 4 , which further encapsulate the packets in UDP datagrams. +This directive is incompatible with +.Cm tunneladdr . .It Cm -tunnel Remove the source and destination tunnel addresses. .It Cm tunneldf @@ -1888,6 +1891,16 @@ the value can also be set to .Ar copy to have the TTL copied between the encapsulated protocol headers and the tunnel protocol headers. +.It Cm tunneladdr Ar src_address +Set the outer IP address of the tunnel. +This is useful for point-to-multipoint tunnels where peers are in different +subnets like +.Xr vxlan 4 +endpoint mode or +.Xr mgre 4 . +It is incompatible with the +.Cm tunnel +directive. .It Cm txprio Ar prio Configure the value used for the priority field in the tunnel protocol headers.
