(Case Study 1: HSRP Alternate IP Address Reported as Duplicate IP Address Case Study 2: HSRP Status Constantly Changing (Flowing, Alternate, Conversational) or %HSRP-6-STATECHANGE Case Study 3: HSRP Unable to Identify Peer Case Study 4: HSRP State Changes and Switch Reports "SYS-4-P2_WARN:1/H/OSTlt;mac_addressgt;IsFlappingBetweenPortlt;port_1gt;andPortlt;port_2gt;" in Syslog Case Study 5: HSRP State Changes and Switch Reports RTD-1 in Syslog- ADDR_FLAP Case Study 6: HSRP State Changes and Switch Reports "MLS-4-MOVEOVERFLOW:Toomanymoves,stopMLSfor5sec(20000000)" in Syslog Case Study 7: HSRP Intermittent State Change on Multicast Stub Area Network Case Study 8: Asymmetric Routing and HSRP (excessive flooding of unicast traffic in a network with routers running HSRP) Case study 9: HSRP virtual IP addresses are reported as different IP addresses Case study 10: HSRP causes MAC violations on secure ports Case study 11: %InterfaceHardwareCannotSupportMultipleGroupsHSRP Troubleshooting Module (for CatOS switches)
This document includes the following attachments:
Understanding and Troubleshooting HSRP Issues in Catalyst Switch Networks.pdf....)
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