CompTIA
CV0-004 · Question #330
A systems engineer tries to mount an iSCSI LUN to a VM host in a data center, but the host does not discover any iSCSI targets. A sample of the switch configuration is shown in the following image…
The correct answer is C. Changing the access VLAN for Gigabit Ethernet 1/0/2 to 25. The VM host’s storage uplink (Gi1/0/2) is in VLAN 24, while the iSCSI controllers (Gi1/0/6 and Gi1/0/7) are in VLAN 25. iSCSI target discovery requires Layer 2 connectivity on the same VLAN/subnet; moving Gi1/0/2 to VLAN 25 restores discovery.
Troubleshooting
Question
A systems engineer tries to mount an iSCSI LUN to a VM host in a data center, but the host does not discover any iSCSI targets. A sample of the switch configuration is shown in the following image: GigabitEthernet 1/0/1 description "Development Network Uplink to VM Host A" access vlan 24 GigabitEthernet 1/0/2 description "Storage Network Uplink to VM Host A" access vlan 24 spanning-tree portfast mtu 9216 GigabitEthernet 1/0/3 description "Lights-Out Management VM Host A" access vlan 20 spanning-tree portfast GigabitEthernet 1/0/4 description "SAN Management Controller A" access vlan 20 GigabitEthernet 1/0/5 description "SAN Management Controller B" access vlan 20 spanning-tree portfast GigabitEthernet 1/0/6 description "SAN iSCSI Controller A" access vlan 25 spanning-tree portfast GigabitEthernet 1/0/7 description "SAN iSCSI Controller BTM access vlan 25 spanning-tree portfast Which of the following configuration changes would most likely resolve the discovery issues?
Options
- ADisabling Gigabit Ethernet 1/0/7
- BChanging the MTU on Gigabit Ethernet 1/0/2
- CChanging the access VLAN for Gigabit Ethernet 1/0/2 to 25
- DEnabling jumbo frames on Gigabit Ethernet 1/0/6 and Gigabit Ethernet 1/0/7
How the community answered
(39 responses)- A3% (1)
- B5% (2)
- C82% (32)
- D10% (4)
Explanation
The VM host’s storage uplink (Gi1/0/2) is in VLAN 24, while the iSCSI controllers (Gi1/0/6 and Gi1/0/7) are in VLAN 25. iSCSI target discovery requires Layer 2 connectivity on the same VLAN/subnet; moving Gi1/0/2 to VLAN 25 restores discovery.
Topics
#iSCSI#VLANs#Network Troubleshooting#Storage Networking
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