GA»Æ½ð¼×

¡°¼«¼ò¡±»ÀР¡¤ È«ÓòÖÇÁª Ø­ GA»Æ½ð¼×м«¼òÁ캽ÏÂÒ»´úÐ£Ô°Íø½¨Éè×êÑлá
date
Ô¤Ô¼Ö±²¥
ÎÞ¸Ð×¼Èë ÈËÎïͳ¹Ü Ø­ RG-SAM+5.X ÐÂÒ»´ú¸ßУAIÈÏ֤ƽ̨°ä²¼
date
Ô¤Ô¼Ö±²¥
GA»Æ½ð¼×¡¤(Öйú¼¯ÍÅ)¹Ù·½ÍøÕ¾
²úÆ·
< ·µ»ØÖ÷²Ëµ¥
²úÆ·ÖÐÐÄ
²úÆ·
½â¾ö¹æ»®
< ·µ»ØÖ÷²Ëµ¥
½â¾ö¹æ»®ÖÐÐÄ
ÐÐÒµ
ºÏ×÷ͬ°é
·µ»ØÖ÷²Ëµ¥
Ñ¡ÔñÇøÓò/˵»°
GA»Æ½ð¼×¡¤(Öйú¼¯ÍÅ)¹Ù·½ÍøÕ¾

Ä㲻֪·µÄBGPиöÐÔ£º¡°ADD-PATH¡± |ÔËάʵս¼Ò

GA»Æ½ð¼×¡¤(Öйú¼¯ÍÅ)¹Ù·½ÍøÕ¾ °ä²¼¹¦·ò£º2020-10-12
GA»Æ½ð¼×¡¤(Öйú¼¯ÍÅ)¹Ù·½ÍøÕ¾

 

 

“ÔËάʵս¼Ò”רÀ¸£¬´Ó¼¼Êõµ½Êµ¼Ê£¬

ºÍÄúÁÄÁÄÔËάµÄÄÇЩʶù£¬½²ÊöÔËάÈ˵ē×òÌì¡¢½ñÌìºÍÃ÷Ìì”

 

 

×÷Õߣº´ó·å

ÔËÓªÉÌ·þÎñÖÐÐÄ

 

BGPÓÉÓÚÖ§³Ö»ùÓÚÕ½ÊõµÄ·ÓÉѡ·£¬ºÍ̸Ò×À©´ó£¬ÇÒÖ§³ÖÊýÁ¿¸ü¶àµÄ·ÓÉÌõ¿î£¬ÔڹǸÉÍøÏÖʵ³ö²ú»·¾³Öб»¿í·º²¿Êð¡£Í¨³£ÔڹǸÉÍø³ö²úÍøÂçÖУ¬Ê¹ÓÃISIS»òÕßOSPF×÷ÓÃÓòÄÚIGPºÍ̸£¬Ê¹ÓòÄÚËùÓÐÒµÎñ»ã¾ÛÉ豸¡¢Ö÷ÌâÉ豸»·»ØµØÖ·¿É´ï¡£ÔÚ´Ë»ù´¡ÉÏÔÙ²¿ÊðBGP½øÐÐÒµÎñ·ÓɳÐÔØ£¬µ«ÓÉÓÚBGP×ÔÉíѡ·׼ÔòÔ­Òò£¬ÔڹǸÉÍø´æÔÚÈßÓà½Úµãʱ¿ÉÄÜ»á²úÉú·ÇÔ¤ÆÚµÄÍøÂçÁ÷Á¿Ä£ÐÍ¡£Ê¹Óô«Í³µÄ“Ðé¹¹ÏÂÒ»Ìø”·½Ê½½øÐд¦ÖÃʱ¼´·ÛËéÁËBGPµÄ׳´óµÄ·ÓɽÚÔìÄÜÁ¦£¬Í¬Ê±Ò²Ôö³¤ÁËÍøÂç¶ÔÐé¹¹ÏÂÒ»ÌøµÄIPµÄ¹æ»®¡¢²¿Êð²Ù×÷£¬´ó´óÔö³¤ÁËÍøÂçÔËάµÄ¸´ÔÓ¶È¡£µ«ÔÚrfc7911³öÏÖºó£¬Í¨¹ýBGP ADD-PATH¸öÐÔ¿É×Ô¶¯ÊµÏֵȼÛBGP·ÓÉ£¬²»ÔÙ±ØÒªÓ×ͬ°éÃǽøÐÐÐé¹¹ÏÂÒ»ÌøIP¹æ»®Ó벿Êð¡£

 

 

ǰ²»¾Ã£¬Íø¹¤Ó×ÈñÔÚÒ»´Î¹Ç¸ÉÍø¼¯³ÉÏîÄ¿¾ÍÓöµ½ÁËÕâÑùµÄÍ·ÌÛÎÊÌ⣬½ÓÏÂÀ´£¬Ó×ÈñÏÖÉí˵·¨£¬·ÖÏíÏÂÈôºÎÀûÓÃADD-PATH¸öÐÔ½â¾öÄÑÌâ¡£

 

BGPÔڹǸÉÍøÖÐÊÇÈôºÎ²¿ÊðµÄ£¿

 

ijÈÕ£¬Ó×Èñ½Óµ½¸öÁîËûÐ˷ܵÄÏîÄ¿£ºÄ³Ê¡¼¶Êý¾ÝÖÐÐÉÏîÄ¿£¬´ÓÊý¾ÝÖÐÐijö¿Ú¡¢»ã¾Û¡¢½ÓÈë¾ùÓÉËûÕÆ¹ÜÉè¼Æ¡¢Ö´ÐС£ÕâÈÃËû½ø½¨¶àÄêµÄBGP¡¢ISISÖÕÓÚÓ­À´ÁËʵս£¬ÄÚÐÄÎޱȼ¤°º£¬¿ªÐÄ......

 

 

´ËʱÔÚËûµÄÄÔº£ÀïÏëÆðÁË“Ëü”µÄºÃ£¬×³´óµÄ·ÓɽÚÔìÄÜÁ¦£¬ÔڹǸÉÍøÖб»¿í·º²¿Ê𣬺Í̸Ò×À©´ó£¬Ö§³ÖÊýÁ¿¸ü¶àµÄ·ÓÉÌõ¿î¡£Òò¶øÓ×ÈñÔÚÓë¿Í»§¹µÍ¨ºó£¬ÔÚÊý¾ÝÖÐÐĵijö¿Ú²ãÃæÉè¼Æ³ÉÒÔÏÂͼһµÄÍØÆË¡£

 

ͼһ

 

Èçͼһ£¬³ýÊý¾ÝÖÐÐÄCR±í£¬ÆäËû¾ùΪÏÖÓÐÍøÂç¡£½ÓÈëÍøCR£¬Ê¡¶ÀÁ¢RR¡¢Ê¡BR¼æRRÉ豸¾ùÔËÐÐÔÚͳһÖÎÀíÓòÄÚISIS level 2ÖС£½ÓÈëÍøCRʹÓÿÚ×ÖÐÍÍØÆËÓëÊ¡BR»¥Áª¡£

 

Êý¾ÝÖÐÐÄCRÓ×ÈñÉè¼ÆÎªÊ¹ÓÃË«V×ÖÐÍÍØÆËÓëÊ¡BR¼æRRÉ豸»¥Áª¡£ÓÉÓÚÍøÂç´¦ÓÚÑݽø½×¶Î£¬ÏÖ½×¶ÎÊý¾ÝÖÐÐÄCRÖ»ÓëÊ¡¶ÀÁ¢RRÐγÉIBGPÁÚ¾Ó¹ØÏµ£¬ÇÒÊý¾ÝÖÐÐÄCRΪBGP RR client½ÇÉ«¡£½ÓÈëÍøCRÓëÊ¡BR¼æRRÉ豸ÐγÉIBGPÁÚ¾Ó¹ØÏµ£¬ÇÒ½ÓÈëÍøCR×÷ΪBGP RR client½ÇÉ«¡£Ê¡¶ÀÁ¢RRÓëÊ¡BR¼æRRÉ豸ÐγÉIBGPÁÚ¾Ó¹ØÏµ£¬²»´æÔÚBGP RR client½ÇÉ«¡£Ê¡BR×÷Óóö³³×ìÉ«Ïòȫʡ°ä²¼ISISĬÈÏ·ÓÉ¡£

 

´ËʱÓ×ÈñÐÄÖÐÂúÊÇ·ÐÌÚ£¬²¢×ԵõÄÁªÏµ¿Í»§½øÐвâÊÔ¡£µÚÒ»¸ö²âÊÔÏîÊÇ·ÂÕÕÒµÎñ·ÓɳÐÔØ²âÊÔ¡£

 

ÔÚÊý¾ÝÖÐÐÄCR1¡¢CR2ͬʱ°ä²¼Ò»ÑùÒµÎñÍø¶Î·ÓÉ£¬ËùÓÐBGPѡ·ÊôÐÔ¾ùΪĬÈÏÖµ¡£ÔÚÓ×ÈñÄÔº£ÀïÕâÔ¤ÆÚ³ÉЧ¾ÍÊǽÓÈëÍøÁ½Ì¨CRµÄBGP·ÓɱíÖдæÔÚÁ½Ìõ±ðÀëÖ¸ÏòÊý¾ÝÖÐÐÄCR1¡¢CR2µÄÒµÎñÍø¶Î·ÓÉ£¬ÏÕЩ……

 

 

¿Í»§Í¨¹ý½ÓÈëÍøCR²é¿´Êý¾ÝÖÐÐÄÒµÎñÍø¶Î·ÓÉʱ£¬ÏÂÒ»Ìø¾ùΪÊý¾ÝÖÐÐÄCR1µÄloopbackµØÖ·¡£Ó×ÈñÌýµ½ÕâÊÂʵ£¬ÏÕЩ²»¸ÒÏàÐÅ£¬ÕâôÓÅÁ¼µÄÉè¼ÆÔõô»¹»á³öÏÖçÛ¶ê×Ó£¡

 

¾­¹ýÂŴζԹ滮Õå×ÃÓëÏÖÍøÑéÖ¤£¬Ó×ÈñʼÖÕûÕÒµ½ÎÊÌâÔ­Òò¡£Òò¶øÓ×Èñ´ø×ÅÓ×ÓÇÉËÏò½ÌÔ±¸µß¶½ÌÕâ“çÛ¶ê×Ó”µÄÓÉÀ´¡£

 

½ÌÔ±¸µ¿´µ½Í¼Ò»ÍØÆË£¬Ïàʶ·ÂÕÕÒµÎñ·ÓɳÐÔØ²âÊÔÁ˾ֺó£¬×ì½Ç΢΢ÉÏÑ·³öÆäÖеİÂÃØ¡£

 

ÓÉÓÚÒµÎñ·ÓÉÔÚÐû¸æÊ±Î´¶ÔBGPѡ·ÊôÐÔ½øÐÐÅú¸Ä£¬µ¼ÖÂÊ¡¶ÀÁ¢RR1¡¢RR2ÔÚBGPѡ·׼Ôò×÷ÓÃÏÂÖ»ÓÅÑ¡router-id½ÏÓ×µÄBGPÁÚ¾ÓËùÐû¸æÒµÎñÍø¶Î×÷Ϊ·ÓÉ£¨Êý¾ÝÖÐÐÄCR-1µÄrouter-id±ÈCR-2С£©¡£´Ó¶ø»áµ¼ÖÂÊ¡BR01¡¢BR02¡¢½ÓÈëÍøCR1¡¢CR2½Ó¼ûÊý¾ÝÖÐÐÄÒµÎñÁ÷Á¿¾ùÓÉÊý¾ÝÖÐÐÄCR1³ÐÔØ¡£Õâ¸ö“çÛ¶ê×Ó”ÀË·ÑÁËÊý¾ÝÖÐÐÄCR2Á´Â·´ø¿í£¬Í¬Ê±Á÷Á¿Ä£ÐÍÒ²²»Êǿͻ§Ëù½øÕ¹µÄ¡£

 

Ó×ͬ°é»áÏëµ½ÔÚÊ¡¶ÀÁ¢RRÅäÖÓmaximum-paths”£¬Ê¹Ê¡¶ÀÁ¢RRÐγɵȼ۵ÄÒµÎñ·ÓÉ£¬´Ó¶øÊ¡¶ÀÁ¢RR»áÏÈÏòÊ¡BRÐû¸æÁ½¸ö·ÖÆçÏÂÒ»ÌøÊý¾ÝÖÐÐÄÒµÎñ·ÓÉ¡£µ«“maximum-paths”Ö»ÊÇÓ°ÏìBGP·ÓɼÓÔØµ½Â·ÓɱíÊýÁ¿£¬²¢Î´ÄÜÓ°ÏìBGP·ÓÉѡ·׼Ôò¡£BGPÏòÁÚ¾ÓÐû¸æÆäBGP·ÓɱíÖÐBGP·ÓÉ£¬²¢·ÇÉ豸·ÓɱíÖзÓÉ¡£

 

Ó×ÈñÒ»¸±»íÈ»¿ªÀʵÄÑù×Ó£¬²¢³ÖÐøÏò½ÌÔ±¸µß¶½Ì½â¾ö¹æ»®¡£

 

ºÜ¾ÃÒÔǰµÄ½â¾ö¹æ»®

 

Ϊ½â¾öBGPѡ·׼Ôò´øÀ´µÄ“çÛ¶ê×Ó”£¬½ÌÔ±¸µÍ¨¹ýÐé¹¹ÏÂÒ»Ìø·½Ê½ÎªÓ×Èñ½øÐнâ´ð¡£

 

Èçͼ1ËùÊ¾ÍØÆË£¬Êý¾ÝÖÐÐÄCR1¡¢CR2ÓëÊ¡¶ÀÁ¢RRÅäÖÃBGPÁÚ¾Óʱ£¬Í¨¹ýroute-map½«Êý¾ÝÖÐÐÄCR1¡¢CR2ËùÐû¸æÒµÎñÍø¶Î·ÓÉÏÂÒ»ÌøÅú¸ÄΪͳһ¸ö“Ðé¹¹IP”¡£ÇÒÕâ¸ö“Ðé¹¹IP”ͬʱÔÚÊý¾ÝÖÐÐÄCR1¡¢CR2ÉÏÅäÖò¢Í¨¹ýIGPºÍ̸½«ÆäÐû¸æµ½È«Íø£¬´Ó¶øÊ¹Ê¡BR1¡¢BR2½ø½¨µ½Êý¾ÝÖÐÐÄÒµÎñ·ÓÉʱÏÂÒ»Ìø¾ùΪ“Ðé¹¹IP”£¬“Ðé¹¹IP”ͨ¹ý·ÓɱíµÝ¹é²éÕÒÏÂÒ»Ìø³ö½Ó¿ÚΪʡBRÓëÊý¾ÝÖÐÐÄCR1¡¢CR2»¥Áª¶Ë¿Ú¡£½ø¶øÊµÏÖÁ˽ӼûÊý¾ÝÖÐÐÄÁ÷Á¿Äܹ»ÔÚÊý¾ÝÖÐÐÄCR1¡¢CR2¼äÐγɵȼÛõè¾¶¡£ÒÔÏÂΪʵÏÖÐé¹¹ÏÂÒ»Ìø´óÌå²½ÖèÓëÅäÖãº

 

! Êý¾ÝÖÐÐÄCR1¡¢CR2ÅäÖÃÐé¹¹ÏÂÒ»ÌøIP

ip route   172.16.1.1 255.255.255.255 null 0

! Êý¾ÝÖÐÐÄCR1¡¢CR2ÅäÖÃÅú¸Ä·ÓÉÐû¸æÏÂÒ»ÌøÕ½Êõ

route-map   set_vnh permit 10

set next-hop 172.16.1.1

! Êý¾ÝÖÐÐÄCR1¡¢CR2ͨ¹ýIGP½«Ðé¹¹IPÐû¸æµ½È«Íø

ip   prefix-list s2i seq 5 permit 172.16.1.1/32

!

route-map   red_s2i permit 10

 match ip address prefix-list s2i

!        

router   isis

 ...

 redistribute static route-map red_s2i

! Êý¾ÝÖÐÐÄCR1¡¢CR2Õë¶ÔÊ¡¶ÀÁ¢RRÅäÖÃÅú¸ÄÒµÎñ·ÓÉÏÂÒ»Ìøroute-map

router bgp   100

...

 address-family ipv4

  network 9.9.9.9 mask 255.255.255.255

  neighbor 192.168.12.1 route-map set_vnh out

 

¿´ËÆÍ¨¹ýÐé¹¹ÏÂÒ»Ìø“ÃÀÂú”µÄ½â¾öÁËÕâ´ÎµÄ“çÛ¶ê×Ó”ÎÊÌ⣬µ«Ëü·ÛËéÁËBGP׳´óµÄ·ÓɽÚÔìÄÜÁ¦¡£Ôڴ˳¡¾°Êý¾ÝÖÐÐÄCR1¡¢CR2ÎÞ·¨ÔÙͨ¹ýBGPѡ·ÊôÐÔ½øÐзÓɽÚÔ죬ÓÉÓÚÒµÎñ·ÓÉÏÂÒ»ÌøIPʼÖÕΪ“Ðé¹¹IP”¡£

 

Ó×ÈñѰ˼×Å»¹ÓÐûÆäËû¸üÓŵĽⷨ¡£½ÌÔ±¸µ½Ó×ÅÍùÏÂ˵......

 

ADD-PATH¸öÐÔ½â¾ö¹æ»®

 

Ö±µ½rfc7911µÄ³öÏÖ£¬BGPͬʱÐû¸æÍ³Ò»Ç°×ºµÄ¶àÌõõè¾¶³ÉΪ¿ÉÄÜ¡£rfc7911½ç˵ÁËBGPÒ»ÖÖеÄcapabilityÓÃÓÚͬʱÐû¸æ¶à¸öÏÂÒ»ÌøµÄÒ»ÑùBGP·ÓÉ¡£Í¨¹ýÔÚBGPÁÚ¾Ó¼äЭÉÌadd-path capability£¬Â·ÓÉÐû¸æÊ±»á½«BGP·Óɱí½ÏÓÅBGP·ÓÉͬʱ·¢Ë͵½Ö§³Öadd-path capabilityµÄBGPÁÚ¾Ó¡£ÒÔÏÂΪƾ¾Ý¿Í»§ÍøÂçÅú¸ÄΪadd-path·½Ê½ÊµÏÖBGPµÈ¼Û·ÓɹؼüÅäÖãº

 

add-pathʵÏÖ»úÔìÖ»½«BGP·ÓɱíÖнÏÓÅ·ÓÉͬʱ·¢Ë͵½BGPÁÚ¾Ó£¬Æä²¢Î´·ÛËéBGP·ÓÉѡ·׼Ôò¡£ÈôÊDZØÒªÂ·ÓɱíÖÐÌìÉú¶àÌõµÈ¼ÛBGP·ÓÉ£¬»¹Ðè˼¿¼BGPѡ·׼ÔòÓëÔö³¤“maximum-paths”ÅäÖᣱØÒª°ÑÎÈ“add-path”ΪBGPÒ»ÖÖcapability¡£ÈôÊÇÏÖʵ³ö²úÍøÂçÖÐBGPÒÑÐγɲ»±äBGPÁÚ¾Ó²¢³ÐÔØÒµÎñ·ÓÉ£¬ÆôÓô˸öÐÔ½«»áµ¼ÖÂBGP»á»°³Á½¨£¬BGPÁÚ¾Ó¼ä³ÁÐÂЭÉÌË«·½BGP capability¡£

 

! Ê¡¶ÀÁ¢RRÅäÖÃÆôÓÃadd-path¸öÐÔ

router bgp 100

...

 !

 address-family ipv4

  bgp additional-paths select all best 2

  ...

  neighbor 7.7.7.7 additional-paths send 

  neighbor 7.7.7.7 advertise additional-paths best 2

  neighbor 8.8.8.8 additional-paths send 

  neighbor 8.8.8.8 advertise additional-paths best 2

! Ê¡BRÅäÖÃÆôÓÃadd-path¸öÐÔ£¬²¢ÅäÖÃIBGP¶àõè¾¶¸ºÔØÆ½ºâÖ°ÄÜ

router bgp 100

...

 !

 address-family ipv4

  ...

  neighbor 5.5.5.5 additional-paths receive

  neighbor 6.6.6.6 additional-paths receive

  maximum-paths ibgp 2

 

 
 

¼¼Êõ×ܽá

 

BGP¹ÌÓÐ׳´ó·ÓɽÚÔìÄÜÁ¦£¬ÔÚʵÏÖ²¿Êðʱ¿ÉÄÜ»á²úÉú·ÇÔ¤ÆÚÍøÂçÁ÷Á¿Ä£ÐÍ¡£Ó×ͬ°éÃÇÔÚÏÖʵ²¿ÊðʱÐè¶à¼Ó×¢Òâ½ÚÔìÆ½ÃæÓëÊý¾ÝÆ½ÃæÓйرíÏîŶ¡£Í¬Ê±BGPÒ²ÊÇInternetÒ»¸ö³ÁÒªµÄ·ÓɺÍ̸£¬ÓйØRFC³ß¶ÈÔÚ²»ÐݸüУ¬¸÷ÈËҲҪά³Ö½ø½¨£¬¸üÐÂ×ÔÉíרҵ֪ʶ¡£

 

¹Ø×¢GA»Æ½ð¼×
gfwx_logo
¹Ø×¢GA»Æ½ð¼×¹ÙÍøÎ¢ÐÅ
ËæÊ±Ïàʶ¹«Ë¾×îж¯Ì¬
GA»Æ½ð¼×¡¤(Öйú¼¯ÍÅ)¹Ù·½ÍøÕ¾

·µ»Ø¶¥²¿

ÊÕÆð
GA»Æ½ð¼×¡¤(Öйú¼¯ÍÅ)¹Ù·½ÍøÕ¾ ÎĵµAI¸±ÊÖ
GA»Æ½ð¼×¡¤(Öйú¼¯ÍÅ)¹Ù·½ÍøÕ¾ ÎĵµÆÀ¼Û
ev-close
¸Ã×ÊÁÏÊÇ·ñ½â¾öÁËÄúµÄÎÊÌ⣿
ev-close
Äú¶Ôµ±Ç°Ò³ÃæµÄÖÐÒâ¶ÈÈôºÎ£¿
²»Õ¦µÎ
¼«¶ÈºÃ
dark-star dark-star dark-star dark-star dark-star
ev-close
ÄúÖÐÒâµÄÔ­ÒòÊÇ£¨¶àÑ¡£©£¿
ev-close
Äú²»ÖÐÒâµÄÔ­ÒòÊÇ£¨¶àÑ¡£©£¿
ev-close
ÄúÊÇ·ñ»¹ÓÐÆäËûÎÊÌâ»ò½¨Ò飿
ΪÁ˼±¾ç½â¾ö²¢»Ø¸´ÄúµÄÎÊÌ⣬ÄúÄܹ»ÁôÏÂÁªÏµ·½Ê½
ÓÊÏä
ÊÖ»úºÅ
ev-bg
¸Ð¼¤ÄúµÄ·´À¡£¡
GA»Æ½ð¼×¡¤(Öйú¼¯ÍÅ)¹Ù·½ÍøÕ¾
GA»Æ½ð¼×¡¤(Öйú¼¯ÍÅ)¹Ù·½ÍøÕ¾
GA»Æ½ð¼×¡¤(Öйú¼¯ÍÅ)¹Ù·½ÍøÕ¾
ÇëÑ¡Ôñ·þÎñÏîÄ¿
¹Ø¹ØÕ÷ѯҳ
ÊÛǰÕ÷ѯ ÊÛǰÕ÷ѯ
ÊÛǰÕ÷ѯ
ÊÛºó·þÎñ ÊÛºó·þÎñ
ÊÛºó·þÎñ
¶¨¼û·´À¡ ¶¨¼û·´À¡
¶¨¼û·´À¡
¸ü¶àÁªÏµ·½Ê½
¡¾ÍøÕ¾µØÍ¼¡¿