ip BGP selection path ✅ 3. 逐步分析为什么选择192.168.2.1 BGP选路规则中: i(IGP) >e(EGP) >?(Incomplete) 也就是说,如果其他因素(Weight、Local Preference、AS Path、MED)相同,BGP 更倾向于选择i(IGP)来源的路径,而不是?(Incomplete)路径。 Weight 192.168.2.1的 Weight=300,比其他路径高(直接胜出)...
Now when R1 reaches step 6 in the best path selection process, it will choose the path learned from R3 since the MED is lower (a default of 0) than what is advertised by R2:R1#sh ip bgp 172.16.1.0/24 BGP routing table entry for 172.16.1.0/24, version 3 Path...
Path type: external, path is valid, is best path, no labeled nexthop, in rib -> Path selection motive AS-Path: 65535 65534 65533 , path sourced external to AS 172.18.255.255 (metric 0) from 172.18.255.255 (172.18.255.255) Origin incomplete, MED 0, localpref 100, weight 0 Path-id 1 ...
表示Optional Parameters(可选参数)的长度。如果此值为0,表示没有可选参数。 Optional Parameters 可变 此值为BGP可选参数列表,每一个可选参数是一个TLV格式的单元。 0 7 15 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-... | Parm.Type | Parm.Length | Parm.Value (variable) +-+...
1. set path-selection backup 1 install 2. set path-selection backup 1 advertise 3. set path-selection backup 1 advertise install 4. set path-selection all advertise 5. set path-selection best-path 6. set path-selection multipath advertise 7. set path-selection backup 1 install multi...
A:如上图所示,RFC6793定义可通过Optional Parameters属性TLV进行携带Capability Type=65。如果AS Number超过2字节,在Open报文的My AS字段中填充23456,Capability Type=65携带真正的AS Number。23456这是一个过渡AS Number。还可在AS_Path中标识相应路径,具体原理可见下文介绍。
表示Optional Parameters(可选参数)的长度。如果此值为0,表示没有可选参数。 Optional Parameters 可变 此值为BGP可选参数列表,每一个可选参数是一个TLV格式的单元。 0 7 15 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-... | Parm.Type | Parm.Length | Parm.Value (variable) +-+...
BGP attributes (also called BGP route attributes) are a set of parameters that describe specific BGP routes, and BGP can filter and select routes based on these attributes. BGP route attributes are classified into four types: Well-known mandatory: This type of attribute can be identified by all...
No, but i thought it is used for best path selection.and if the path attributes are used for best path selection that means it`s considered to be the metric in bgp like the metric in other routing protocols is used for best path selection LikeReply steve john 2 years ago @carlgersbach...
The parameters “ip-prefix” and “length” specify the route destination The configuration zeros the host portion of the specified network address (e.g. 192.0.2.4/24 is stored as 192.0.2.0/24) Address family is identified by the network address itself and not by the configuration command cont...