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when ever a FRR Client wants to send any data to another node using MLAG Channel, uses below mechanisam. 1. sends a MLAG Registration to zebra with interested messages that it is intended to receive from peer. 2. In response to this request, Zebra opens communication channel with MLAG. and also in Rx. diretion zebra forwards only those messages which client shown interest during registration 3. when client is no-longer interested in communicating with MLAG, client posts De-register to Zebra 4. if this is the last client which is interested for MLAG Communication, zebra closes the channel. why PIM Needs MLAG Communication ================================ 1. In general on LAN Networks elecetd DR will send the Join towards Multicast RP in case of a LHR and Register in case of FHR. 2. But in case DR Goes down, traffic will be re-converged only after the New DR is elected, but this can take time based on Hold Timer to detect the DR down. 3. this can be optimised by using MLAG Mecganisam. 4. and also Traffic can be forwarded more efficiently by knowing the cost towards RP using MLAG Signed-off-by: Satheesh Kumar K <sathk@cumulusnetworks.com>
63 lines
1.5 KiB
C
63 lines
1.5 KiB
C
/* mlag header.
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* Copyright (C) 2018 Cumulus Networks, Inc.
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* Donald Sharp
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*
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* This file is part of FRR.
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*
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* FRR is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* FRR is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with FRR; see the file COPYING. If not, write to the Free
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* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*/
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#ifndef __MLAG_H__
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#define __MLAG_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define MLAG_BUF_LIMIT 2048
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enum mlag_role {
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MLAG_ROLE_NONE,
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MLAG_ROLE_PRIMARY,
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MLAG_ROLE_SECONDARY
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};
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/*
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* This message definition should match mlag.proto
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* Beacuse mesasge registartion is based on this
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*/
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enum mlag_msg_type {
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MLAG_MSG_NONE = 0,
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MLAG_REGISTER = 1,
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MLAG_DEREGISTER = 2,
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MLAG_STATUS_UPDATE = 3,
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MLAG_MROUTE_ADD = 4,
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MLAG_MROUTE_DEL = 5,
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MLAG_DUMP = 6,
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MLAG_MROUTE_ADD_BULK = 7,
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MLAG_MROUTE_DEL_BULK = 8,
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MLAG_PIM_CFG_DUMP = 10,
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MLAG_VXLAN_UPDATE = 11,
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MLAG_PEER_FRR_STATUS = 12,
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};
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extern char *mlag_role2str(enum mlag_role role, char *buf, size_t size);
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#ifdef __cplusplus
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}
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#endif
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#endif
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