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210-060 · Question #172

Which two actions take place for proper operation when using Advanced Networking on VCS (choose two)?

The correct answer is B. manual route must be added using x command route add E. Network interface must reside in separate subnet. Cisco VCS Advanced Networking requires the two LAN interfaces to reside on separate subnets and static routes to be added manually using the xcommand route add CLI command.

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Question

Which two actions take place for proper operation when using Advanced Networking on VCS (choose two)?

Options

  • Aautomatic routing must be enabled
  • Bmanual route must be added using x command route add
  • Cnetwork interface must reside in the same subnet
  • DNAT reflection must be enabled on the firewall
  • ENetwork interface must reside in separate subnet

How the community answered

(39 responses)
  • A
    8% (3)
  • B
    74% (29)
  • C
    15% (6)
  • D
    3% (1)

Why each option

Cisco VCS Advanced Networking requires the two LAN interfaces to reside on separate subnets and static routes to be added manually using the xcommand route add CLI command.

Aautomatic routing must be enabled

VCS does not support automatic or dynamic routing protocols such as OSPF or RIP; all routing for Advanced Networking must be manually configured using CLI commands.

Bmanual route must be added using x command route addCorrect

VCS does not support dynamic routing protocols, so all routes for the secondary LAN interface must be configured manually using 'xcommand route add', specifying the destination network, subnet mask, and gateway - without these manual routes, traffic for networks reachable via LAN2 will not be forwarded correctly.

Cnetwork interface must reside in the same subnet

Placing both network interfaces in the same subnet causes IP routing conflicts and defeats the purpose of Advanced Networking, which is designed to require network separation.

DNAT reflection must be enabled on the firewall

NAT reflection (hairpin NAT) on the firewall is not a prerequisite for VCS Advanced Networking and is unrelated to the dual-NIC configuration requirements.

ENetwork interface must reside in separate subnetCorrect

The Advanced Networking feature on VCS is designed to connect the appliance to two logically separate networks, requiring LAN1 and LAN2 to be on different subnets; placing them on the same subnet creates a routing conflict that prevents proper network separation and traffic segmentation.

Concept tested: VCS Advanced Networking dual NIC configuration requirements

Source: https://www.cisco.com/c/en/us/td/docs/telepresence/infrastructure/vcs/config_guide/Cisco_VCS_Advanced_Networking_Deployment_Guide.pdf

Topics

#VCS advanced networking#manual routing#separate subnets#network interface

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