when I am creating cfm between two ovs ( one physical and other VM on same machine) , CCM packet are with RDI bit set. connection is not making between MPs. both are on same bradcast domain.
tried with two physical machines with OVS by giving same vlan id, but result is same. -ed On Sat, Feb 18, 2012 at 2:27 AM, Ethan Jackson <et...@nicira.com> wrote: > > Ed- same broadcast domain , you mean- I have to assign all MPs in one > vlan > > or same network should be provided. > > The CFM module sends multicast CCMs on the interface upon which it's > configured. Presumably, multicast/broadcasts packets egressing this > interface can reach some set of other hosts on the network. This set > can be restricted by using VLANs or other strategies. How this is > done precisely, is out of the scope of the CFM module. The important > thing is, when the CFM module broadcasts CCMs, all other MPs that > these CCMs reach need to have the same transmission interval. > > >> > 2) along with that I want to know how can I see the current timer > value > >> > by > >> > any show command for particular MPids, I didn' tfind any command for > >> > this. > >> > >> ovs-appctl cfm/show will give you information about currently configured > >> CFM. > > The CFM module doesn't maintain a separate timer for each remote MP. > Instead it maintains one timer that triggers at an interval of 3.5 > times the transmission interval. When the CFM module receives a CCM > from a remote MP, it sets a flag for this remote MP indicating the > reception. When the timer triggers, any MPs which are not flagged > are considered unreachable and removed. All of this information (the > timers, the set of reachable MPs, the reception flag) is available > from the ovs-appctl cfm/show command. > > It's also worth noting that we don't implement the full 802.1ag > specification. We implement a much simplified version which maintains > the packet format, but is quite a bit less sophisticated than the > standard. > > Ethan > > > > > > > > > Ed- this command shows the configured CFM,my doubt was when CCM received > > then timer gets restarted then how can I check /verfiy this that timer > has > > been restarted for a MP or MPs > >> > >> > >> Ethan > >> > >> > >> > >> > > >> > Regards, > >> > Ed > >> > > >> > _______________________________________________ > >> > discuss mailing list > >> > discuss@openvswitch.org > >> > http://openvswitch.org/mailman/listinfo/discuss > >> > > > > > >
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