华为BGP如何宣告静态路由 为什么bgp向外宣告的路由，必须要存在于自身的igp路由表中
\u534e\u4e3a\u4ea4\u6362\u673a\u5982\u4f55\u4fee\u6539\u9759\u6001\u8def\u7531\u4f18\u5148\u7ea7\uff1f\u5982\u4e0b\u662f\u4fee\u6539NE40E \u5404\u8def\u7531\u4f18\u5148\u7ea7\uff1a
1.bgp
[HUAWEI] bgp 100[HUAWEI-bgp] ipv4-family unicast[HUAWEI-bgp-af-ipv4] preference 20 200 200
\u547d\u4ee4\u683c\u5f0fpreference { external internal local | route-policy route-policy-name }
undo preference\u7f3a\u7701\u60c5\u51b5\u4e0b\uff0cEBGP\u5916\u90e8\u8def\u7531\u3001IBGP\u5185\u90e8\u8def\u7531\u548cBGP\u672c\u5730\u8def\u7531\u7684\u4f18\u5148\u7ea7\u503c\u90fd\u662f255\u3002
\u53c2\u6570\u8bf4\u660eexternal EBGP\u5916\u90e8\u8def\u7531\u7684\u534f\u8bae\u4f18\u5148\u7ea7\u3002\u5916\u90e8\u8def\u7531\u662f\u4ece\u81ea\u6cbb\u7cfb\u7edf\u5916\u7684\u5bf9\u7b49\u4f53\u5b66\u6765\u7684\u6700\u4f73\u8def\u7531\u3002\u6574\u6570\u5f62\u5f0f\uff0c\u53d6\u503c\u8303\u56f4\u662f1\uff5e255\u3002\u8be5\u503c\u8d8a\u5c0f\u5219\u5b9e\u9645\u7684\u4f18\u5148\u7ea7\u8d8a\u9ad8\u3002 internal IBGP\u5185\u90e8\u8def\u7531\u7684\u534f\u8bae\u4f18\u5148\u7ea7\u3002\u5185\u90e8\u8def\u7531\u662f\u4ece\u81ea\u6cbb\u7cfb\u7edf\u5185\u7684\u5176\u5b83\u5bf9\u7b49\u4f53\u5b66\u6765\u7684\u8def\u7531\u3002\u6574\u6570\u5f62\u5f0f\uff0c\u53d6\u503c\u8303\u56f4\u662f1\uff5e255\u3002\u8be5\u503c\u8d8a\u5c0f\u5219\u5b9e\u9645\u7684\u4f18\u5148\u7ea7\u8d8a\u9ad8\u3002 local BGP\u672c\u5730\u8def\u7531\u7684\u534f\u8bae\u4f18\u5148\u7ea7\u3002\u672c\u5730\u8def\u7531\u662f\u6307\u901a\u8fc7\u805a\u5408\u547d\u4ee4\uff08summary automatic\u81ea\u52a8\u805a\u5408\u548caggregate\u624b\u52a8\u805a\u5408\uff09\u6240\u805a\u5408\u7684\u8def\u7531\u3002\u6574\u6570\u5f62\u5f0f\uff0c\u53d6\u503c\u8303\u56f4\u662f1\uff5e255\u3002\u8be5\u503c\u8d8a\u5c0f\u5219\u5b9e\u9645\u7684\u4f18\u5148\u7ea7\u8d8a\u9ad8\u3002 route-policy route-policy-name Route-Policy\u540d\u79f0\u3002\u5b57\u7b26\u4e32\u5f62\u5f0f\uff0c\u533a\u5206\u5927\u5c0f\u5199\uff0c\u4e0d\u652f\u6301\u7a7a\u683c\uff0c\u957f\u5ea6\u8303\u56f4\u662f1\uff5e40\u3002
\u697c\u4e0a2\u4f4d\u56de\u7b54\u7684\u4e0d\u5bf9\u3002
\u5177\u4f53\u7528\u5230\u90a3\u4e2aRFC\uff0c\u6211\u4e0d\u77e5\u9053\u3002
\u539f\u56e0\u662f\uff1aBGP\u4e0d\u662f\u7528\u6765\u4ea7\u751f\u8def\u7531\u7684\uff0c\u800c\u662f\u53d1\u5e03\u3001\u66f4\u91cd\u8981\u7684\u662f\u63a7\u5236\u5df2\u7ecf\u5b58\u5728\u7684\u8def\u7531\u7684\u3002bgp\u4e2d\u6709\u89c4\u5b9a\uff1abgp\u8def\u7531\u5668\u53ea\u628a\u81ea\u5df1\u4f7f\u7528\u7684\u8def\u7531\u53d1\u7ed9\u90bb\u5c45\u3002\u6240\u4ee5\uff0c\u5047\u5982bgp\u53d1\u5e03\u8def\u7531\uff0c\u88ab\u53d1\u5e03\u7684\u8def\u7531\u5fc5\u987b\u5b58\u5728\u4e8eip\u8def\u7531\u8868\u4e2d\uff0c\u54ea\u6015\u5b83\u662f\u865a\u5047\u8def\u7531\uff0c\u4e5f\u5fc5\u987b\u6709\uff0c\u5c31\u662f\u8fd9\u6837\u3002
\u5047\u5982\u4f60\u7684\u8def\u7531\u8868\u4e2d\u4e0d\u5b58\u5728\u67d0\u6761\u8def\u7531\uff0c\u90a3\u4e48\uff0c\u5373\u4fbf\u4f60\u53d1\u5e03\u4e86\u8fd9\u6761\u8def\u7531\uff0c\u4e5f\u4e0d\u4f1a\u751f\u6548\uff0c\u90bb\u5c45\u66f4\u4e0d\u4f1a\u6536\u5230\u3002
\u57fa\u4e8e\u4ec0\u4e48\u8003\u8651\uff1f\u4e0a\u9762\u5df2\u7ecf\u8bf4\u4e86\uff0cbgp\u53ea\u628a\u81ea\u5df1\u4f7f\u7528\u7684\u8def\u7531\u53d1\u7ed9\u90bb\u5c45\uff0c\u800c\u81ea\u5df1\u4f7f\u7528\u7684\u5c31\u662f\u5b58\u5728\u4e8eip\u8def\u7531\u8868\u4e2d\u7684\u8def\u7531\uff0c\u662f\u6700\u4f18\u7684\u3002
\u697c\u4e0a\u8bf4\uff1a\u6015\u8def\u7531\u8868\u6ca1\u6709\u800c\u4ea7\u751f\u4e0d\u53ef\u8fbe\u7684\u60c5\u51b5\u3002\u8fd9\u662f\u4e0d\u6b63\u786e\u7684\u8ba4\u8bc6\u3002\u5176\u5b9e\uff0c\u4e0d\u8bbabgp\uff0c\u8fd8\u662fospf\u6216\u5176\u4ed6\u8def\u7531\u9009\u62e9\u534f\u8bae\uff0c\u90fd\u53ef\u4ee5\u53d1\u5e03\u4e0d\u5b58\u5728\u7684\u8def\u7531\u5668\uff0c\u524d\u63d0\u662f\u5728\u81ea\u5df1\u7684\u8def\u7531\u8868\u91cc\u624b\u5de5\u6dfb\u52a0\u4e00\u6761\u6307\u5411null0\u7684\u8def\u7531\u3002\u67092\u4e2a\u4f5c\u7528\uff1a\u8def\u7531\u805a\u5408\u548c\u9ed1\u6d1e\u8def\u7531\u3002
\u8def\u7531\u805a\u5408\u662f\u4e3a\u4e86\u51cf\u5c11\u8def\u7531\u8868\u6570\u91cf\uff0c\u8def\u7531\u9ed1\u6d1e\u662f\u4e3a\u4e86\u89e3\u51b3\u7f51\u7edc\u653b\u51fb\u3002
\u5982\uff1a\u8def\u7531\u5668A\u4e0b\u63a52\u4e2a\u5b50\u7f51\uff0c10.1.1.0/25\u548c10.1.1.128/25\uff0c\u6216\u8005\u66f4\u591a\u3002\u90a3\u4e48\u5047\u5982\u4e0d\u7528\u805a\u5408\uff0c\u5c31\u9700\u8981\u53d1\u5e032\u6761\u8def\u7531\uff0c\u5047\u5982\u4f7f\u7528\u805a\u5408\uff0c\u90a3\u4e48\uff0c\u5148\u521b\u5efa1\u6761\u805a\u5408\u8def\u7531\uff1a
ip route 10.1.1.0 24 NULL0\uff0c\u7136\u540e\u5728bgp\u4e2d\u53d1\u5e03\u805a\u5408\u8def\u7531\u5373\u53ef\u3002
\u8bf4\u4e86\u8fd9\u4e9b\uff0c\u4e0d\u77e5\u60a8\u660e\u767d\u4e86\u6ca1\u6709\uff1f\u82e5\u89c9\u5f97\u6211\u8bf4\u7684\u8fd8\u884c\uff0c\u5c31\u7ed9\u6211\u8ffd\u52a0\u70b9\u5206\u5427\u3002
bgp 100
#
ipv4-family unicast
undo synchronization
import-route static
这样静态路由默认全部引入到bgp中了
绛旓細import-route static 杩欐牱闈欐佽矾鐢榛樿鍏ㄩ儴寮曞叆鍒bgp涓簡
绛旓細鍏ㄥ眬妯″紡涓闈欐佽矾鐢閰嶇疆濡備笅锛歩p route-static 0.0.0.0 0.0.0.0 192.168.112.1銆傚缓绔嬩竴涓柊鐨剉aln 鎶婄鍙0/0/10鍔犲叆鍒拌VLAN鐒跺悗璁剧疆缃戝叧 涓嬮潰浠5700涓轰緥锛歴ys銆倂lan 10銆俰nterface vlanif 10銆俰p add 10.10.10.x 255.255.255.0銆俼uit銆俰p route-static 0.0.0.0 0.0...
绛旓細internal IBGP鍐呴儴璺敱鐨勫崗璁紭鍏堢骇銆傚唴閮ㄨ矾鐢辨槸浠庤嚜娌荤郴缁熷唴鐨勫叾瀹冨绛変綋瀛︽潵鐨勮矾鐢便傛暣鏁板舰寮忥紝鍙栧艰寖鍥存槸1锝255銆傝鍊艰秺灏忓垯瀹為檯鐨勪紭鍏堢骇瓒婇珮銆 local BGP鏈湴璺敱鐨勫崗璁紭鍏堢骇銆傛湰鍦拌矾鐢辨槸鎸囬氳繃鑱氬悎鍛戒护锛坰ummary automatic鑷姩鑱氬悎鍜宎ggregate鎵嬪姩鑱氬悎锛夋墍鑱氬悎鐨勮矾鐢便傛暣鏁板舰寮忥紝鍙栧艰寖鍥存槸1锝255銆傝...
绛旓細1銆佹墽琛宻ystem-view锛岃繘鍏ョ郴缁熻鍥俱2銆佹墽琛宨p route-static鍛戒护锛岀粦瀹氬嚭鎺ュ彛锛岄厤缃櫄鎷熶笅涓璺闈欐佽矾鐢鐨勬椂鍊欐病鏈夊拰鍑烘帴鍙ｈ繘琛屽叧鑱旓紝瀵艰嚧鍑烘帴鍙ｅ叧闂殑鏃跺欒繖浜涢潤鎬佽矾鐢辫繕鏄敓鏁堢殑锛屽洜姝ら厤缃櫄鎷熶笅涓璺抽潤鎬佽矾鐢辩殑鏃跺欑粦瀹氬嚭鎺ュ彛銆3銆佸綋瀵圭鎺ュ彛鍏抽棴鐨勬椂鍊欒闈欐佽矾鐢变細澶辨晥锛屾鏃剁敱浜庤矾鐢卞櫒D涓婂湪ISIS涓悓鏃跺紩鍏...
绛旓細3銆佸綋BGP璺敱浼犻掔粰EBGP閭诲眳鏃讹紝浼氬皢鑷繁鐨凙S鍙锋坊鍔犲埌ASpath鐨勬渶鍓嶈竟銆傚綋BGP璺敱浼犻掔粰IBGP閭诲眳鏃讹紝涓嶄細娣诲姞鑷繁鐨凙S鍙枫4銆丄S_PATH鍙互琚慨鏀癸紝鍗庝负鍦‥BGP鍜孖BGP閭诲眳涔嬮棿閮藉彲浠ヨ淇敼锛屾濈鍙兘鍦‥BGP涔嬮棿杩涜淇敼 ps:AS鍐呴儴鏄鎬庝箞杩涜闃茬幆鐨勫憿?IBGP鐨勬按骞冲垎鍓诧細閫氳繃IBGP鑾峰緱鐨勬渶浼樿矾鐢变笉浼氬彂甯冪粰鍏朵粬...
绛旓細1銆佸湪鐢ㄦ埛妯″紡涓嬭緭鍏モ漞n鈥滆繘鍏ョ壒鏉冩ā寮忊漇w#鈥滐紝濡傚浘鎵绀恒2銆佸湪鐗规潈妯″紡涓嬭緭鍏モ漜onf t鈥滆繘鍏ュ叏灞妯″紡鈥漇w(config)#鈥滐紝濡傚浘鎵绀恒3銆佸湪鍏ㄥ眬妯″紡涓嬭緭鍏" ip routing ",灏卞彲浠ュ紑鍚璺敱锛屽鍥炬墍绀恒4銆佸紑鍚矾鐢变互鍚庡氨鍙互閰嶇疆鍚勪釜VLAN鐨処P鍦板潃浜嗭紝濡傞厤缃甐LAN10鍜孷LAN20鐨勬帴鍙P鍦板潃锛屽鍥炬墍绀恒5銆佷篃...
绛旓細鏂规硶寰堝锛屾瘮濡 R2/R4鍙互鍋氶毀閬瀹ｅ憡杩沷spf R2/R4鍙互鎶BGP璺敱寮曞叆ospf R2/R3/R4鍙互璺憁pls/vpn R3涔熷姞鍏GP锛屽仛RR锛岃仈閭︼紝鐩存帴寤洪偦灞呯瓑绛夐兘鍙互 杩樺彲浠ュ湪R3涓婂啓闈欐佽矾鐢銆傘傘傛讳箣灏辨槸鑳借В鍐虫暟鎹寘鍒拌揪R3涔嬪悗鏃犺矾鍙蛋鐨勭獦澧冨嵆鍙傘傘
绛旓細褰撶劧鏄闈欐佽矾鐢鍟婏紝涓嶇鏄濈杩樻槸鍗庝负锛岄潤鎬佽矾鐢卞崗璁殑绠＄悊璺濈锛堢浉褰撲簬鍗忚涔嬮棿鐨勪紭鍏堢骇锛夋槸1锛岃孯IP鏄120锛孫SPF鏄110锛bgp(澶栭儴):20 bgp(鍐呴儴):200 鐩磋繛鐨勬帴鍙:0 鎺ュ彛涓哄嚭鍙ｇ殑static route:0 鎺ュ彛涓轰笅涓璺硆outer鍑哄彛鐨剆tatic router :1 ...
绛旓細閫氳繃鍙戝嚭ip route鍛戒护锛岄厤缃寚鍚0.0.0.0/0缃戠粶鐨闈欐佽矾鐢锛岃缃戠粶鎸囧悜null 0鎺ュ彛銆傞氳繃鍙戝嚭redistribute static鍛戒护娉ㄥ叆BGP锛屽苟鍦ㄨ矾鐢卞櫒閰嶇疆妯″紡涓嬮厤缃甦efault-information origin鍛戒护銆傝繖涓ょ鏈哄埗榛樿閮戒細灏嗛粯璁よ矾鐢卞彂甯冨埌 鎵鏈夐偦灞 銆傚鏋滆姹備粎灏嗛粯璁よ矾鐢卞彂甯冪粰 鐗瑰畾閭诲眳 锛屽垯鍙兘闇瑕侀厤缃叾浠栬矾鐢辫繃婊ゅ櫒銆...
绛旓細浼氱殑锛屽彧瑕佷綘寮曞叆static锛岄偅灏变細鏄叏閮ㄥ湪璺敱琛ㄤ腑鐢熸晥鐨勬湁鏉＄洰璺敱銆傛寚鍚憂ull鎺ュ彛鐨勬槸鐢熸晥鐨勩
