5GµÈм¼ÊõµÄÐËÆð£¬ÕýÉî¿ÌÓ°Ïì×ÅͨÐÅÊг¡£¬Íƶ¯ÔËÓªÉ̺ÍÉ豸ÉÌÔÚ¼¼Êõ¼Ü¹¹¡¢×éÖ¯¼Ü¹¹µÈ·½Ãæ¿ìËÙÑݽø¡£5G»·¾³Ï£¬Óû§ÐèÇó¶àÑù»¯£¬È«ÇòÍøÂçÕýËæ׿¼ÊõÑݽø¶ø·¢Éú±ä¸ïÓëÖع¹¡£
5Gʱ´ú£¬ÐÂÒµÎñ¶ÔÆäËù³ÐÔصÄÍøÂçÐèÇóÕý±äµÃÔ½À´Ô½¸ß£¬Áé»î¡¢Ò×À©Õ¹ºÍ¼òµ¥Ò×Ó㬳ÉΪÔËÓªÉÌÍøÂç±ØÐë¾ß±¸µÄ»ù±¾ÄÜÁ¦¡£5G×ñÑת¿Ø·ÖÀëµÄ»ù±¾ÔÔòÔÚ5GÍøÂç¼Ü¹¹ÉÏÌåÏÖΪ£ºÊý¾ÝÃæϳÁ¡¢¿ØÖÆÃ漯ÖУ¬´óÁ¿²ÉÓ÷ֲ¼Ê½Íø¹Ø¡£ÕâÐèÒª5G·Ö²¼Ê½Íø¹ØµÄÓ²¼þ»òÈí¼þ½»»»»ú£¬Äܹ»ÔÚÁ÷Á¿Òýµ¼¡¢ÓÅÏȼ¶´¦Àí¡¢¸ß¿É¿¿¡¢µÍʱÑÓͨÐŵȲ»Í¬ÐèÇóµÄÒµÎñÖз¢»ÓÖØÒª×÷Óá£
Òò´Ë£¬SDN¼¼ÊõѸËÙ³ÉΪÔËÓªÉ̹Ø×¢µÄÖص㡣¸Ã¼¼Êõ¿É»ùÓÚËíµÀ¼¼ÊõÔÚÎïÀíÍøÂçÉÏÐéÄâ³ö¶à¸öÏ໥¸ôÀëµÄÐéÄâÍøÂ磬´Ó¶øʹµÃ²»Í¬Óû§Ö®¼äʹÓöÀÁ¢µÄÍøÂç×ÊÔ´ÇÐƬ£¬Ìá¸ßÍøÂç×ÊÔ´ÀûÓÃÂÊ£¬ÊµÏÖµ¯ÐÔµÄÍøÂ硣ͬʱ£¬Ëü»¹ÄÜʹÔÆÍøÈںϣ¬ÍøÂçµÄÅäÖÃÍêÈ«Èںϵ½ÒµÎñµÄ¶¯Ì¬ÅäÖÃÖÐÈ¥£¬Íê³ÉÍøËæÔƶ¯£¬ÍøÂçËæǨ£¬×îÖÕΪÆóÒµ´øÀ´ÊÕÒæ¡£
ÕýÊÇÒòΪSDNÓµÓÐÈç´Ë¶àµÄÓÅÊÆ£¬¸÷´ó³§ÉÌ·×·×ÍƳöÁË×Ô¼ºµÄSDN·½°¸£¬ÆäÖÐÒÔ¿ªÔ´ÉçÇøµÄOpenFlow·½°¸ºÍÒÔ˼¿Æ¡¢juniperµÈÓ²¼þ³§ÉÌΪ´ú±íµÄEVPN·½°¸Öð½¥³ÉΪÊг¡µÄÖ÷Á÷¡£
OpenFlow·½°¸
ÒÔOpenFlowΪ´ú±íµÄ¼¯ÖпØÖÆ·½°¸£¬Í¨¹ýSDN¿ØÖÆÆ÷ÍêÈ«¿ØÖÆ£¬ÓÖ½ÐÇ¿¿Ø¡£OpenFlow·½°¸Ö÷ÒªÓÉOpenFlow½»»»»ú¡¢SDN Controller¶þ²¿·Ö×é³É¡£OpenFlow½»»»»ú½øÐÐÊý¾Ý²ãµÄת·¢£»Controller¶ÔÍøÂç½øÐм¯ÖпØÖÆ£¬ÊµÏÖ¿ØÖƲãµÄ¹¦ÄÜ¡£
OpenFlowÍøÂçÖÐת·¢²ãÃæµÄºËÐÄÊÇÓɸ÷ÖÖÖ§³ÖOpenFlowµÄÈí¼þºÍÓ²¼þµÄ½»»»»ú×é³É£¬¸ºÔðÊý¾Ý±¨ÎĵÄת·¢¡£Ã¿Ò»¸öÖ§³ÖOpenFlowµÄÈí¼þ»òÓ²¼þ½»»»»ú¶¼ÓµÓÐÒ»¸öFlowTable£¨Á÷±í£©£¬½»»»»ú±¾ÉíÖ»°´ÕÕÁ÷±íµÄÄÚÈݶÔÊý¾Ý±¨ÎĽøÐÐת·¢¡£¶øSDN Controller¸ºÔðʵÏÖFlowTableµÄÉú³É¡¢Î¬»¤ºÍÏ·¢¡£OpenFlow¹æ·¶¶¨ÒåÁË´ÓL2~L4ÔÚÄÚµÄÊ®ÓàÖֹؼü×Ö£¬²¢ÇÒFlowTableÖеÄÿ¸ö¹Ø¼ü×Ö¶¼¿ÉÒÔͨÅä¡£ÔÚ¾ßÌåµÄÍøÂçÖÐÓÃÄÄÖÖÆ¥Åä¹æÔò£¬ÔòÓɲ»Í¬µÄʹÓó¡¾°¾ö¶¨£¬±ÈÈçÔÚÒ»¸ö´¿¶þ²ãµÄ×éÍø»·¾³Ï£¬Ö»ÐèÒª¶þ²ãµÄÆ¥Åä×ֶξͿÉÒÔ£¬ÆäËü×ֶοÉÒÔ²ÉÓÃͨÅä¡£
Ó봫ͳÍøÂçÖÐÊý¾Ý°ü´¦ÀíÁ÷³ÌÏà±È£¬´«Í³½»»»»ú¶ÔÓÚÁ÷ÏòÊÇÈËΪͨ¹ýÅäÖÃÖ¸¶¨µÄ£¬Ã»ÓÐÊý¾ÝÁ÷µÄ¸ÅÄֻ½øÐÐÊý¾Ý°ü¼¶±ðµÄ½»»»ºÍ·ÓÉ´¦Àí£»¶øÔÚOpenFlowÍøÂçÖУ¬ËùÓÐÍøÂçÏà¹ØµÄÅäÖÃÏ·¢£¬¶¼Í³Ò»ÓÉSDN Controllerͨ¹ýÏ·¢Á÷±íÈ¡´ú£¬¾ö¶¨ÁËËùÓÐÊý¾Ý°üÁ÷ÔÚÍøÂçÖд«Êä·¾¶¡£Õû¸öϵͳÈçÏÂͼËùʾ¡£
ͼ1£ºOpenFlow ϵÄÍøÂçÍØÆË
EVPN·½°¸
ÒÔBGP EVPNΪ´ú±íµÄËÉÉ¢¿ØÖÆ·½°¸£¬Í¨¹ýÍøÂçÉ豸¿ØÖÆÃæÐÒé×Ôѧϰ£¬ÓÖ½ÐÈõ¿Ø¡£
EVPN£¨ÒÔÌ«ÍøÐéÄâרÓÃÍøÂ磩ÊǶàÐÒéµØÖ·Ó³Éä±ê×¼£¬Ê¹ÓÃBGP×÷Ϊ·ÓÉÐÒ飬ÔÙ½áºÏEVPN£¬¾Í¿ÉÒÔΪVXLAN´øÀ´ÍêÕûµÄ¿ØÖÆƽÃæ¡£Æä˼·ºÍ¼¯ÖÐʽµÄͨ¹ýOpenFlow·½Ê½Ï·¢Á÷±í²»Í¬£¬»ùÓÚÔÓеÄVXLANʵÏÖ·½°¸Ã»ÓпØÖÆƽÃ棬ͨ¹ýÊý¾ÝƽÃæµÄÁ÷Á¿·ººé½øÐÐVTEP·¢ÏÖºÍMACµØַѧϰµ¼Ö·ººìµÄÎÊÌâ¡£VXLANÒýÈëÁËEVPN×÷Ϊ¿ØÖÆƽÃæÀ´½â¾öÔÓеķººéÎÊÌ⣬ͨ¹ýÔÚ¸÷¸öVTEPÖ®¼ä½»»»BGP EVPN·ÓÉÐÅϢʵÏÖVTEPµÄ×Ô¶¯·¢ÏÖ¡¢Ö÷»úÐÅÏ¢Ï໥ͨ¸æµÈÌØÐÔÀ´½â¾ö֮ǰµÄ·ººéÎÊÌâ¡£
EVPN¼Ì³ÐÁËMP-BGPºÍVXLAN?Á½ÕßµÄÓÅÊÆ£¬Í¨³£²ÉÓÃGW-Spine-LeafµÄ·Ö²ã¼Ü¹¹¡£Leaf²ãµÄÉ豸×÷ΪVTEP¶Ô±¨ÎĽøÐÐEVPNÏà¹Ø´¦Àí£»Spine²ãΪºËÐÄÉ豸£¬¸ù¾Ý±¨ÎĵÄÄ¿µÄµØַת·¢±¨ÎÄ£»GW×÷ΪÍø¹ØÉ豸£¬¸ºÔðÄϱ±Ïò³öDCÁ÷Á¿µÄת·¢ÓëVXLANËíµÀµÄ·â×°½â·â×°¡£
ÓÐÁËEVPN¼¼Êõ×÷ΪVXLANÍøÂçµÄ¿ØÖƲ㣬Êý¾Ý²ãÃæ¾Í±äµÃ¼òµ¥Ðí¶à£¬Êý¾ÝƽÃæEVPNͨ¹ýBGPͨ¸æ±¾µØѧµ½µÄÐÅÏ¢£¬¶Ô¶Ë¸ù¾ÝBGPÊÕµ½µÄ·ÓÉ£¬½«ÐÅϢϵ½Ô¶¶ËVXLANËíµÀÉÏ£¬Ðγɵ¥²¥±íÏî¡£±¨ÎÄת·¢Í¨¹ý²éÕÒ±¾µØVTEP ±íÏîÕÒµ½Ä¿±êµÄVTEP£¬ÔÙͨ¹ýVXLANËíµÀ·¢Ë͵½Ä¿±êVTEP£¬Ä¿±êVTEP½«VXLANËíµÀ½â·â×°£¬×ª·¢¸øÄ¿µÄServer¡£¿ÉÒÔ¿´³ö£¬´ÓÊý¾Ý²ãÃæ½Ç¶ÈÀ´¿´£¬EVPNÖ»¸ºÔðVXLANµÄ¿ØÖƲãÃ棬Ҳ¾ÍÊÇת·¢ÐÅÏ¢µÄ´«Ê䣬¶ÔVXLANÊý¾Ý²ãÃæûÓÐÓ°Ïì¡£Õû¸öϵͳÈçÏÂͼËùʾ¡£
ͼ2£ºEVPNϵÄÍøÂçÍØÆË
ÌØÐÔ
OpenFlow
EVPN
VTEPµã
Èí¼þÉ豸/Ó²¼þÉ豸
Ó²¼þÉ豸
¿ØÖÆ·þÎñ
L2/L3 Forwarding,°²È«/QoS/TAP²ßÂÔ
EVPNÓÃÓÚL2/L3 Forwarding£¬ÍêÕû½â¾ö·½°¸»¹ÐèÒªNetconf»òÆäËüÅäÖÃÐÒé
¹¦ÄÜÁé»îÐÔ
ºÜ¸ß, ÏÞÓÚControllerģʽ
µÍ£¬±ØÐëÉý¼¶Ó²¼þ
ÍøÂç¹æÄ£
ÔÚÐéÄ⻯ӦÓó¡¾°Ï£¬¿É¹ÜÀíµÄÍøÂç¹æģС
ÔÚÐéÄ⻯ӦÓó¡¾°Ï£¬¿É¹ÜÀíµÄÍøÂç¹æÄ£´ó
¿É¿¿ÐÔ
½Ï¸ß
¸ß
ÒµÎñ·¢·ÅÐÔÄÜ
¸ß
µÍ(NetConf)
ת·¢ÐÔÄÜ
ÊÜÏÞÓÚÈí¼þvSwtichµÄÐÔÄÜ
¸ß
¶àÉ豸³§¼Ò³¡¾°Ö§³Ö
ʹÓÃOpenflowÖ»¿ØÖÆVTEPºÍGWÉ豸, UnderlayÍøÂç¿ÉÓɲ»Í¬³§¼Ò³Ð½¨
EVPN²»´æÔÚÎÊÌ⣬µ«NetconfÎÞ·¨ÊµÏÖ²»Í¬³§¼ÒµÄ»¥²Ù×÷
ÊÊÓó¡¾°
ÊÊÓÃÓÚÈíÓ²½âñîµÄ³¡¾°£¬SDN·½°¸ÍêÈ«ºÍÓ²¼þÎ޹أ¬Ö»Ð貿ÊðÈí¼þÉ豸¾Í¿ÉÒÔʵÏÖÍøÂçÐéÄ⻯£¬½µµÍÒýÈëSDNµÄÃż÷¡£
ÊÊÓÃÓÚÔÆÍø·Ö±ð¹ÜÀí¡¢Í¶×ʵĿͻ§´ÓÍøÂ粿ÃÅ·¢ÆðµÄSDN¸ÄÔìÐèÇó¡£Êʺϴó¹æÄ£²¿ÊðµÄÍøÂ磬¿ØÖÆÁËËùÓеÄÓ²¼þÍøÂ磬ʹµÃ¹ÊÕϵĶ¨Î»¿ÉÒÔ×öµ½¶Ëµ½¶Ë¡£
±í1£º OpenFlowºÍEVPNÌصã¶Ô±È
ÖÐÐËZENIC vDC¿ØÖÆÆ÷ Ìṩ¶Ëµ½¶ËµÄÊý¾ÝÖÐÐÄSDN½â¾ö·½°¸
ZENIC vDC¿ØÖÆÆ÷ÊÇÖÐÐËͨѶÍƳöµÄÒ»¿îµçÐż¶µÄ¼¯Èº¿ØÖÆÆ÷²úÆ·£¬¾Û½¹ÔÆÊý¾ÝÖÐÐĵÄSDNÐèÇ󣬶¨Î»ÓÚ»ìºÏOverlay£¨OpenFlow+EVPN£©¡¢Ó²¼þoverlay£¨EVPN£©ºÍÈí¼þOverlay£¨OpenFlow£©µÄÓ¦Óó¡¾°£¬¿ÉÒÔʵÏÖÔƹÜÀíƽ̨ÓëÍøÂç¹ÜÀíƽ̨µÄÈںϣ¬ÌṩͳһµÄ×ÊÔ´¹æ»®ºÍ²¿Ê𣬿ìËÙ¹¹½¨ÐÂÐ͵ÄÐéÄ⻯Êý¾ÝÖÐÐÄ£¬Ìṩ¶Ëµ½¶ËµÄÊý¾ÝÖÐÐÄSDN½â¾ö·½°¸¡£
»ùÓÚÖÐÐËͨѶÔÚÊý¾ÝÖÐÐĽ¨ÉèºÍÊý¾ÝͨÐÅ·½ÃæµÄ¼¼Êõ»ýÀÛ£¬ÖÐÐËZENIC vDC¿ØÖÆÆ÷Ìṩ¿ª·Å¡¢Áé»îµÄÄÜÁ¦£¬¿ÉÖúÁ¦ÔËÓªÉÌ¡¢ÕþÆó¿Í»§¹¹½¨ÐÂÐ͵ÄÐéÄ⻯Êý¾ÝÖÐÐÄÍøÂç¡£
×÷ÕߣºÑÖËÉÃ÷ ÐéÄ⻯½â¾ö·½°¸¼Ü¹¹Ê¦ À´Ô´£ºC114ͨÐÅÍø