201 · Question #70
What is required for a virtual server to support clients whose traffic arrives on the internal VLAN and pool members whose traffic arrives on the external VLAN.
The correct answer is C. The virtual server must be enabled on the internal VLAN. For a virtual server to process client traffic, it must be configured to listen on the VLAN where the client-side traffic originates. The pool members' VLAN is a separate network segment where the virtual server forwards traffic.
Question
What is required for a virtual server to support clients whose traffic arrives on the internal VLAN and pool members whose traffic arrives on the external VLAN.
Options
- AThat support is never available.
- BThe virtual server must be enabled for both VLANs.
- CThe virtual server must be enabled on the internal VLAN.
- DThe virtual server must be enabled on the external VLAN.
How the community answered
(54 responses)- B2% (1)
- C94% (51)
- D4% (2)
Why each option
For a virtual server to process client traffic, it must be configured to listen on the VLAN where the client-side traffic originates. The pool members' VLAN is a separate network segment where the virtual server forwards traffic.
This support is indeed available and is a common configuration for load balancers separating client and server networks.
Enabling the virtual server on both VLANs is unnecessary and potentially incorrect, as the virtual server primarily listens for client connections on one side and forwards to pool members on another.
The virtual server must be enabled on the internal VLAN because this is where the client's incoming traffic arrives, allowing the virtual server to accept and process the initial connection.
The virtual server does not need to be explicitly enabled on the external VLAN because it is forwarding traffic to that VLAN, not directly listening for client connections on it.
Concept tested: F5 BIG-IP virtual server VLAN configuration
Source: https://techdocs.f5.com/en-us/bigip-15-1-0/big-ip-local-traffic-manager-concepts/about-virtual-servers.html
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