Unexpected Application-Specific Behavior During Unified ISSU

This section describes the behavior of applications that vary from the expected behavior during a unified in-service software upgrade.

•  AAA Authentication and Authorization Disabled
•  ATM Affected Behaviors
•  DHCP Affected Behaviors
•  DoS Protection State Freeze
•  Ethernet Affected Behaviors
•  FTP Server File Transfer Behaviors
•  IS-IS Effects on Graceful Restart and Network Stability
•  L2TP Failover of Established Tunnels
•  OSPF Effects on Graceful Restart, Timeouts, and Network Stability
• PIM Suspended During Unified ISSU
•  Subscriber Logins and Logouts Suspended During Unified ISSU
•  SONET/SDH Behavior During Unified ISSU
• T3
•  TACACS+ Services Not Available
•  Interruption in Traffic Forwarding for Layer 3 Routing and Signaling Protocols
•  Recommended Routing Protocol Timer Settings

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