Hot standby router protocol (HSRP): Recovery / failover time test

Diagram for HSRP test plan Test objective and test procedures Both 1841 routers were configured HSRPv2 for redundancy. Vlan 10 is tested in this test plan to demonstrate the failover time when a link failed between router and switch. Catalyst 3750 switches were stacked together as a single entity, two links were connected to different … Continue reading Hot standby router protocol (HSRP): Recovery / failover time test →

Redundancy: HSRP design consideration

Suppose the pair only takes care of one group per vlan (Vlan 10 for example), one is the active router the other one is the standby router (router, L3switch and MLS will be used interchangeably because Layer3 switch or multilayer switch in essence is also a router) The active router has these: sh run | … Continue reading Redundancy: HSRP design consideration →

HSRPv2 virtual IP address cannot be ping

3550-2#sh version Cisco IOS Software, C3550 Software (C3550-IPSERVICESK9-M), Version 12.2(46)SE, RELEASE SOFTWARE (fc2) 3550-1#sh version Cisco IOS Software, C3550 Software (C3550-IPSERVICESK9-M), Version 12.2(46)SE, RELEASE SOFTWARE (fc2) Both IOS are the same version. This version onwards contain HSRPv2. HSRPv2 multicast 224.0.0.102, virtual mac address 0000.0c9f.fxxx where xxx is the group. HSRPv2 can support up to 255 … Continue reading HSRPv2 virtual IP address cannot be ping →