From d062e13da627f80d82c32713baac7d54c8a0a86c Mon Sep 17 00:00:00 2001 From: zbb88888 Date: Tue, 19 May 2026 17:13:46 +0800 Subject: [PATCH] docs: update OVN L3 HA BFD static route documentation to clarify BFD switch functionality --- docs/vpc/ovn-l3-ha-based-ecmp-with-bfd.en.md | 25 +-------------- docs/vpc/ovn-l3-ha-based-ecmp-with-bfd.md | 33 +------------------- 2 files changed, 2 insertions(+), 56 deletions(-) diff --git a/docs/vpc/ovn-l3-ha-based-ecmp-with-bfd.en.md b/docs/vpc/ovn-l3-ha-based-ecmp-with-bfd.en.md index 4c066f709..2a669c656 100644 --- a/docs/vpc/ovn-l3-ha-based-ecmp-with-bfd.en.md +++ b/docs/vpc/ovn-l3-ha-based-ecmp-with-bfd.en.md @@ -77,7 +77,7 @@ spec: - vpc1 enableExternal: true enableBfd: true # bfd switch can be switched at will - #enableBfd: false + #enableBfd: false # cat 02-subnet.yml @@ -243,29 +243,6 @@ PING 223.5.5.5 (223.5.5.5) 56(84) bytes of data. catch outgoing packets within the ovnext ns of a gateway node ```bash -# tcpdump -i ovnext0 host 223.5.5.5 -netvv -dropped privs to tcpdump -tcpdump: listening on ovnext0, link-type EN10MB (Ethernet), capture size 262144 bytes -^C -0 packets captured -0 packets received by filter -0 packets dropped by kernel -[root@pc-node-1 ~]# exit -[root@pc-node-1 ~]# ssh pc-node-2 -Last login: Thu Feb 23 09:21:08 2023 from 10.5.32.51 -[root@pc-node-2 ~]# ip netns exec ovnext bash -[root@pc-node-2 ~]# tcpdump -i ovnext0 host 223.5.5.5 -netvv -dropped privs to tcpdump -tcpdump: listening on ovnext0, link-type EN10MB (Ethernet), capture size 262144 bytes -^C -0 packets captured -0 packets received by filter -0 packets dropped by kernel -[root@pc-node-2 ~]# exit -[root@pc-node-2 ~]# logout -Connection to pc-node-2 closed. -[root@pc-node-1 ~]# ssh pc-node-3 -Last login: Thu Feb 23 08:32:41 2023 from 10.5.32.51 [root@pc-node-3 ~]# ip netns exec ovnext bash [root@pc-node-3 ~]# tcpdump -i ovnext0 host 223.5.5.5 -netvv dropped privs to tcpdump diff --git a/docs/vpc/ovn-l3-ha-based-ecmp-with-bfd.md b/docs/vpc/ovn-l3-ha-based-ecmp-with-bfd.md index eddc826ce..52c1aa0b0 100644 --- a/docs/vpc/ovn-l3-ha-based-ecmp-with-bfd.md +++ b/docs/vpc/ovn-l3-ha-based-ecmp-with-bfd.md @@ -74,7 +74,7 @@ spec: - vpc1 enableExternal: true enableBfd: true # bfd 开关可以随意切换，开表示启用 bfd ecmp 路由 - #enableBfd: false + #enableBfd: false # cat 02-subnet.yml @@ -120,7 +120,6 @@ vpc1 true true true ["vpc1-subnet1"] # 默认 vpc 未支持 ENABLEBFD # 自定义 vpc 已支持且已启用 - # 1. 创建了 bfd 会话 # k ko nbctl list bfd _uuid : be7df545-2c4c-4751-878f-b3507987f050 @@ -199,10 +198,6 @@ route_table : "" ``` bash # 同时在网关节点都应该具备以下资源 - -[root@pc-node-1 ~]# ip netns exec ovnext bash ip a -/usr/sbin/ip: /usr/sbin/ip: cannot execute binary file -[root@pc-node-1 ~]# [root@pc-node-1 ~]# ip netns exec ovnext ip a 1: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 @@ -224,15 +219,12 @@ Destination Gateway Genmask Flags Metric Ref Use Iface 10.5.204.0 0.0.0.0 255.255.255.0 U 0 0 0 ovnext0 ## 注意以上内容和一个 internal port unerlay 公网 pod 内部的 ns 大致是一致的，这里只是在网关节点上单独维护了一个 ns - [root@pc-node-1 ~]# ip netns exec ovnext bfdd-control status There are 1 sessions: Session 1 id=1 local=10.5.204.108 (p) remote=10.5.204.122 state=Up ## 这里即是 lrp bfd 会话的另一端，也是 lrp ecmp 的下一跳的其中一个 - - [root@pc-node-1 ~]# ip netns exec ovnext ping -c1 223.5.5.5 PING 223.5.5.5 (223.5.5.5) 56(84) bytes of data. 64 bytes from 223.5.5.5: icmp_seq=1 ttl=115 time=21.6 ms @@ -243,29 +235,6 @@ PING 223.5.5.5 (223.5.5.5) 56(84) bytes of data. 可以在某一个网关节点的 ovnext ns 内抓到出去的包 ```bash -# tcpdump -i ovnext0 host 223.5.5.5 -netvv -dropped privs to tcpdump -tcpdump: listening on ovnext0, link-type EN10MB (Ethernet), capture size 262144 bytes -^C -0 packets captured -0 packets received by filter -0 packets dropped by kernel -[root@pc-node-1 ~]# exit -[root@pc-node-1 ~]# ssh pc-node-2 -Last login: Thu Feb 23 09:21:08 2023 from 10.5.32.51 -[root@pc-node-2 ~]# ip netns exec ovnext bash -[root@pc-node-2 ~]# tcpdump -i ovnext0 host 223.5.5.5 -netvv -dropped privs to tcpdump -tcpdump: listening on ovnext0, link-type EN10MB (Ethernet), capture size 262144 bytes -^C -0 packets captured -0 packets received by filter -0 packets dropped by kernel -[root@pc-node-2 ~]# exit -[root@pc-node-2 ~]# logout -Connection to pc-node-2 closed. -[root@pc-node-1 ~]# ssh pc-node-3 -Last login: Thu Feb 23 08:32:41 2023 from 10.5.32.51 [root@pc-node-3 ~]# ip netns exec ovnext bash [root@pc-node-3 ~]# tcpdump -i ovnext0 host 223.5.5.5 -netvv dropped privs to tcpdump