Log for 電訊台
最重要學點樣debug bgp既command, 主要有2樣。
1）睇下你announce 左咩prefix出去
2）然後係目的地router, 睇下收到咩route
咁樣就知道自己有無set錯
1）睇下你announce 左咩prefix出去
2）然後係目的地router, 睇下收到咩route
咁樣就知道自己有無set錯
例如，direct peering優先，然後有無做PBR強行指行邊條路，個條路node數係最小，所以行個條路先。
原本無問題既野，但因為你上家同另一間peer左，攪到你出去/入黎時有條更近既路，而routing path改變左，但呢條近既路bandwidth 唔夠攪到仲慢左/high ping results/packet loss....
原本無問題既野，但因為你上家同另一間peer左，攪到你出去/入黎時有條更近既路，而routing path改變左，但呢條近既路bandwidth 唔夠攪到仲慢左/high ping results/packet loss....
上遊router設定錯誤，都會攪到你既router行錯路，要用traceroute 去跟蹤一下條路點行，而traceroute 最好係來回都做一次。
Source to destination
Destination to source
因為出同入，未必行同一條路的
Source to destination
Destination to source
因為出同入，未必行同一條路的
QUESTION 355 Which path does a router choose when it has multiple possible paths to the destination over different routing protocols? A. the path with both the lowest administrative distance and the highest metric B. the path with the lowest administrative distance C. the path with the lowest metric D. the path with both the lowest administrative distance and lowest metric
QUESTION 461 Which PPP subprotocol negotiates authentication options? A. DLCI B. NCP C. SLIP D. ISDN E. LCP
QUESTION 462 When you deploy Multilink PPP on your network, where must you configure the group IP address on each device?
呢題都未見過添，ML PPP
multiple possible paths to the destinationover different routing protocolsrouter# show ip route
....
D 192.168.32.0/24 [90/25789217] via 10.1.1.1
R 192.168.32.0/24 [120/4] via 10.1.1.2
O 192.168.32.0/24 [110/229840] via 10.1.1.3
....我改左個subnet mask做示範
我見有條片講OSPF一定要connect to Area 0/Backbone area
到底係講Direct connect定係indirect都得
到底係講Direct connect定係indirect都得