1676538480,

组网及说明

组网不涉及

告警信息

不涉及

问题描述

现场方案组网开局，S12504G-AF（ R7624P12 ）的DRNI配置后出现keepalive状态down，主设备上Keepalive报文debug只有发没有收。

===============display drni keepalive=============== 

Neighbor keepalive link status (cause): Down (Local Rx timeout)

Neighbor is alive for: N/A

Keepalive packet transmission status:

  Sent: Successful

  Received: Failed

Last received keepalive packet information:

  Source IP address: N/A

  Time: N/A

  Action: N/A 

过程分析

（1）在02设备上debug drni keepalive报文只有发没有收，但是流统结果显示Keepalive报文已经到交换机了。

<GZXY-805-BIZ-12504-2>*Jun  7 18:06:57:454 2022 GZXY-805-BIZ-12504-2 DRNI/7/KplvPacket: -MDC=1; Keepalive packet with length 51 was sent.

19 00 19 00 00 33 00 00 01 00 04 0a 64 2f c7 c4

26 00 00 01 00 0a 08 18 43 e8 80 00 a0 69 d9 44

ca 00 02 00 ff ff ff ff 00 02 00 00 00 00 ff ff

0c 01 02

*Jun  7 18:06:58:454 2022 GZXY-805-BIZ-12504-2 DRNI/7/KplvPacket: -MDC=1; Keepalive packet with length 51 was sent.

*Jun  7 18:06:59:454 2022 GZXY-805-BIZ-12504-2 DRNI/7/KplvPacket: -MDC=1; Keepalive packet with length 51 was sent.

*Jun  7 18:07:00:454 2022 GZXY-805-BIZ-12504-2 DRNI/7/KplvPacket: -MDC=1; Keepalive packet with length 51 was sent.

*Jun  7 18:07:01:454 2022 GZXY-805-BIZ-12504-2 DRNI/7/KplvPacket: -MDC=1; Keepalive packet with length 51 was sent.

（2）进一步排查看交换机上UDP端口6402,6403,6404在占用，当前设备版本Keepalive报文默认占用6400端口号，6400是属于可用端口号的第一个，但是当前版本并未将6400预留出给Keepalive报文使用。6402等当前被占用说明6400之前也被占用过，只是当前已释放，虽然释放了但是无法直接启用该端口号。

<GZXY-805-BIZ-12504-2>dis udp

 Local Addr:port       Foreign Addr:port     Slot  Cpu PCB

 0.0.0.0:161           0.0.0.0:0             4     0   0xffffffffffffffa3

 0.0.0.0:6402          0.0.0.0:0             4     0   0xffffffffffffffa2

 0.0.0.0:6403          0.0.0.0:0             4     0   0xffffffffffffffa5

 0.0.0.0:6404          0.0.0.0:0             4     0   0x0000000000222141 

Distributed relay keepalive parameters:

Destination IP address: 14.9.1.12

Source IP address: 14.9.1.13

Keepalive UDP port : 6400

Keepalive VPN name : auto-online-mlag

解决方法

1. 指定keepalive报文端口号，保持本地和对端端口号一致。

drni  keepalive ip destination xxxx source xxxx udp-port  xxx

CRM论坛（CRMbbs.com）——一个让用户更懂CRM的垂直性行业内容平台,CRM论坛致力于互联网、客户管理、销售管理、SCRM私域流量内容输出5年。 如果您有好的内容，欢迎向我们投稿，共建CRM多元化生态体系，创建CRM客户管理一体化生态解决方案。本文来源：知了社区基于知识共享署名-相同方式共享3.0中国大陆许可协议,某局点S12504G-AF配置DRNI Keepalive无法正常建立