Netscaler STAs Flapping Up and Down and error code 1110 when launching applications
Article ID: CTX215046
Updated On:
Description
Users are unable to launch applications and receive Error code: 1110
STAs (Gateway bindings) are also flapping up and down from NetScaler GUI & CLI.
Resolution
If you investigate at hypervisor level, you can ensure that the traffic landing on the NetScaler has source MAC as the Virtual rather than the Physical
When NetScaler communicates with the STA, it uses the virtual MAC address.
When the STA responds, its source MAC is the physical MAC address.
The NetScaler updates its ARP table and then tries to communicate to the STA using the physical MAC address.
However, this does not reach the STA and the connections gets reset
Problem Cause
STA servers are VMs hosted on a hypervisor.When NetScaler communicates with the STA, it uses the virtual MAC address.
When the STA responds, its source MAC is the physical MAC address.
The NetScaler updates its ARP table and then tries to communicate to the STA using the physical MAC address.
However, this does not reach the STA and the connections gets reset
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