Re: [Users] Arp update / sendarp in case of machine movement ?

2009-08-09 Thread Christian Hofstaedtler
* Robert Heinzmann [090714 12:04]: > Hello, > > I have a question regarding ARP updates. > > Network Setup: venet with proxy arp. > > When movin a VE from one host to another (via DRBD: node1:shutdown, > switch drbd , node2:start) the IP/MAC combination needs to be > re-advertised so that the

Re: [Users] Arp update / sendarp in case of machine movement ?

2009-08-09 Thread Christian
On 14.07.2009, at 11:33, "Robert Heinzmann" wrote: Hello, I have a question regarding ARP updates. Network Setup: venet with proxy arp. When movin a VE from one host to another (via DRBD: node1:shutdown, switch drbd , node2:start) the IP/MAC combination needs to be re-advertised so that

Re: [Users] Arp update / sendarp in case of machine movement ?

2009-07-15 Thread Christian Hofstaedtler
* Robert Heinzmann [090715 18:39]: > > > Default vzctl scripts already ship with exactly this feature set. > > See > > http://git.openvz.org/?p=vzctl;a=blob;f=scripts/vps-functions. > in;h=bcc789380faf52a524abab3f0ec7fe55917ae8d1;hb=f18aada9e4aeff38240c543 > db31739d808b0e81a#l181 > > and > > htt

AW: [Users] Arp update / sendarp in case of machine movement ?

2009-07-15 Thread Robert Heinzmann
> Default vzctl scripts already ship with exactly this feature set. > See > http://git.openvz.org/?p=vzctl;a=blob;f=scripts/vps-functions. in;h=bcc789380faf52a524abab3f0ec7fe55917ae8d1;hb=f18aada9e4aeff38240c543 db31739d808b0e81a#l181 > and > http://git.openvz.org/?p=vzctl;a=blob;f=scripts/vps-net

Re: [Users] Arp update / sendarp in case of machine movement ?

2009-07-15 Thread Christian Hofstaedtler
* Robert Heinzmann [090714 12:04]: > Hello, > > I have a question regarding ARP updates. > > Network Setup: venet with proxy arp. > > When movin a VE from one host to another (via DRBD: node1:shutdown, > switch drbd , node2:start) the IP/MAC combination needs to be > re-advertised so that the

AW: [Users] Arp update / sendarp in case of machine movement ?

2009-07-14 Thread Robert Heinzmann
> I wrote a gratuitous arp daemon (garpd) which turned out to > be necessary for our needs. If you turn down the timeout, it > may be just what you need. Want a copy? I investigated some more. I found that OpenVZ does ARP updates on network interface addition by itself ... -- File /usr/lib/vzc

Re: [Users] Arp update / sendarp in case of machine movement ?

2009-07-14 Thread Gregor at HostGIS
the ARP caches are flushed. This can be done with "sendarp". Otherwise the host is not reachable. I wrote a gratuitous arp daemon (garpd) which turned out to be necessary for our needs. If you turn down the timeout, it may be just what you need. Want a copy? -- HostGIS, Open Source solutions

[Users] Arp update / sendarp in case of machine movement ?

2009-07-14 Thread Robert Heinzmann
Hello, I have a question regarding ARP updates. Network Setup: venet with proxy arp. When movin a VE from one host to another (via DRBD: node1:shutdown, switch drbd , node2:start) the IP/MAC combination needs to be re-advertised so that the ARP caches are flushed. This can be done with "sendar