Thanks Neale! Let me check the mfib code... Thanks, -nagp
On Mon, May 22, 2017 at 1:57 PM, Neale Ranns (nranns) <nra...@cisco.com> wrote: > > > Hi Nagp, > > > > I’d recommend option 1, since the mechanisms to achieve it are already in > place. > > > > To add a path to receive traffic for a multicast FIB entry is much the > same as for unicast (i.e. see ip6_create_mfib_with_table_id() where we > add the special IPv6 ND entries). The additional configuration required for > multicast is for you to decide on which interfaces to accept the incoming > multicast packets. If you are accepting only on specific interfaces, then > you can add a path for the entry that specifies ACCEPT (see > ip6_mfib_interface_enable_disable()). If you want to accept from any > interface then you can set a flag on the entry to that effect (see > dhcp6_proxy_set_server()). > > > > Post lookup, mcast packets will be sent to ipX_local and then onto your > handler registered through ipX_register_protocol(). > > > > Hth, > > neale > > > > > > *From: *<vpp-dev-boun...@lists.fd.io> on behalf of Nagaprabhanjan Bellaru > <nagp.li...@gmail.com> > *Date: *Monday, 22 May 2017 at 08:05 > *To: *vpp-dev <vpp-dev@lists.fd.io> > *Subject: *[vpp-dev] What's a correct way to process IP multicast packets? > > > > I was wondering if any of the following options work: > > * Have a dpo-receive assigned to a multicast address and use the ip > protocol type to punt packets to a custom node in graph > > * Have a custom dpo type created and redirect packets directly from ip > lookup with a "fib_table_entry_special_dpo_add" > > Which is recommended? Is there any better way to do this? > > Thanks, > > -nagp > >
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