Hi, community
Today, let's learn how to solve the problem of abnormal VRRP master/backup status. During VRRP configuration, the most common fault is that two devices are masters. Let's solve this problem together. If you have any good suggestions, please leave me a message.
TOPO:
Master
Backup
The troubleshooting roadmap is as follows:
1. Check the VRRP configurations at both ends. (If the following configurations are incorrect, the VRRP status cannot be established.)
1). Check whether the VRID configuration at both ends is consistent.
2). Check whether the priorities of the two ends are normal.
3). Check whether the master IP addresses configured on both ends are correct.
Master
Backup
2. Check whether the master can ping the Backup address. (If the interfaces between the master and backup devices cannot ping each other, VRRP heartbeat packets cannot be transmitted.)
3. Check whether the STP status of the master/backup node is normal. (If an interface is in the discarding state, heartbeat packets cannot be transmitted, as shown in the following figure.)
4. Check whether VRRP heartbeat packets are normal. (Check whether the send and received packets of the device are normal and whether the intermediate device filters VRRP packets.)
5. Check logs to determine whether a loop exists. ( Sorry, the ENSP cannot view device logs. You can run the display logbuffer command on the device to view device logs.)
6. Enable debugging and check whether VRRP heartbeat packets can be received.
