![]() Nothing strange there but what is strange is that the hsrp group numbers are configured with all the same number. I know the standby numbers dont need to match the vlans and I understand that the virtual mac will be with the xx being the group number in hex.īut I have recently came across a setup where there are a pair of switches running hrsp that have approx 10 vlans with SVI’s running hsrp as gateways for their downstream devices. If I have a pair of switches running hsrp and have 10 SVI’s running hsrp I assume best practice would be to create a unique hsrp group number for each SVI running hsrp. if we are able to see the connections that means failover is stateful.I understand the whole HSRP process and use it daily but I have recently came across an unusual setup. this information can be check using ‘sh failover’ command. NOTE: We can see which device is active and which one is standby in the output of ‘show failover states’ command but if we want to see what kind of stateful information is being exchanged like telnet,ssh, TCP etc. Poll frequency 5 seconds, holdtime 25 seconds Interface: FAIL_OVER GigabitEthernet0/2 (up) These numbers are used for troubleshooting, collect the show output from both units and verify that the numbers match. And sending ASA expects the second number in the messages from peering ASA. These values are used when exchanging information regarding a particular interface, the first number in the output, sends to its peering ASA. Two numbers are showing for each interface(inside and outside). Note: In the output of show failover interface descriptor command. Reset Helpful Commands For Troubleshootingįailed Ifc Failure 13:02:14 UTC Feb 9 2020 But we can manually move it into actvie state if required. Restored ASA will still remain in the standby state until unless failover does’t trigger. it does not mean that ASA will be automatically move into active state. Moving a failed unit to an unfailed state. Hostname(config)# no failover Restoring a Failed Unitīelow command is used for Restore a failed unit. ![]() No shut Manual failover (when failover is not happening automatically or when required) just we added two extra highlighted commands NOTE: This lab example is same as above one. No shut ASA Failover Active/Standby (Failover and stateful link on different interfaces) we can also define the monitoring of interfaces if we don’t want to monitor all the interfacesįailover lan interface FAIL_OVER GigabitEthernet0/2 By default all physical interfaces are monitored and used for trigger the failover as well as hardware and software failure is also triggers the failover. NOTE: The ASA requires something that can trigger the failover mechanism. ![]() so we have already created a seprate articale for it. but we can’t cover all those things with this example. We are having many things which should be in mind before configure the Active / Standby failover and after configure the failover. This is not compulsory but it is recommended by cisco due to security purpose. but this switch should not have other connections as well as we should configure the VLANs on it. We can also connect both ASA firewalls through a layer 2 switch. both firewalls are directly connected using a single linkon port Gi0/2. In below topology, we are using a single link for both failover link and stateful link. Cisco ASA Firewall Active Standby FailoverĪSA Failover Active/Standby (Failover and stateful link on different interfaces)
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