考虑以下输出：

router#show ip bgp vpnv4 rd 300:1  5.5.5.5/26
BGP routing table entry for 300:1:5.5.5.5/26, version 538213
Paths: (2 available, best #2, no table)
  Advertised to update-groups:
     1
  Refresh Epoch 1
  Local, (Received from a RR-client)
    8.20.2.1 (metric 30) from 8.20.2.1 (8.20.2.1)
      Origin incomplete, metric 5222400, localpref 100, valid, internal
      Extended Community: SoO:80:13 RT:300:1
        Cost:pre-bestpath:129:5222400 (default-2142261247) 0x8800:0:0
        0x8801:80:258560 0x8802:65281:25600 0x8803:1:1500 0x8804:0:60293292
        0x8805:3:0
      Connector Attribute: count=1
       type 1 len 12 value 300:1:8.20.2.1
      mpls labels in/out nolabel/24059
      rx pathid: 0, tx pathid: 0
  Refresh Epoch 1
  Local, (Received from a RR-client)
    8.20.2.2 (metric 30) from 8.20.2.2 (8.20.2.2)
      Origin incomplete, metric 107520, localpref 100, valid, internal, best
      Extended Community: SoO:80:13 RT:300:1 Cost:pre-bestpath:129:107520
        0x8800:0:0 0x8801:80:2816 0x8802:65281:25600 0x8803:1:1500
        0x8804:0:60293292 0x8805:3:0
      Connector Attribute: count=1
       type 1 len 12 value 300:1:8.20.2.2
      mpls labels in/out nolabel/24056
      rx pathid: 0, tx pathid: 0x0

我在这里从 EIGRP 重新分配到 iBGP，并通过在 LAN 内的特定接口上设置延迟，我已将 3.20.2.1 的度量值更改为度量 5222400 然后将8.20.2.2的路径设置为最佳，因为它有公制 107520 的较小公制

那里的指标究竟是如何计算的？我假设它是一些 eigrp 到 bgp 延迟公式的一部分，但到目前为止我找不到任何关于它如何与 Cisco 文档相关的具体信息。

谢谢！