A service provider needs to use VLANs 100,200, and 300 to offer three different services to customers.
The customer VLAN range is 900 through 999
Which two tag configurations must the operations engineer configure to avoid VLAN overlapping? (Choose two.)
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A. B. C. D. E. F.AC.
To avoid VLAN overlapping and enable the service provider to offer three different services to customers on VLANs 100, 200, and 300, the operations engineer must configure the following two tag configurations:
A. 802.1ad outer VLANs are 100, 200, 300 F. 802.1ad inner VLANs are 100, 200, 300
Explanation:
802.1ad (also known as Q-in-Q) is a VLAN tagging protocol that allows service providers to extend VLANs across their network without overlapping VLAN IDs. It does this by adding a second layer of VLAN tags to the original VLAN tags.
In this scenario, the service provider wants to use VLANs 100, 200, and 300 to offer three different services to customers. However, the customer VLAN range is 900 through 999, which overlaps with the service provider VLANs.
To avoid this overlapping, the operations engineer must configure 802.1ad outer VLANs with IDs 100, 200, and 300. This will ensure that the service provider's VLANs are isolated from the customer VLANs.
Next, the operations engineer must configure 802.1ad inner VLANs with IDs 100, 200, and 300. This will allow the service provider to map the customer VLANs onto the appropriate service provider VLANs.
Therefore, options A and F are the correct tag configurations to avoid VLAN overlapping and enable the service provider to offer three different services to customers.
Option B is incorrect because configuring 802.1ad outer VLANs with a range of 900-999 would result in overlapping VLAN IDs with the customer VLAN range.
Option C is incorrect because configuring 802.1ad inner VLANs with a range of 900-999 would also result in overlapping VLAN IDs with the customer VLAN range.
Option D is incorrect because it suggests rewriting VLANs 900-900 to 100, 200, and 300, which would not solve the problem of VLAN overlapping.
Option E is incorrect because it suggests rewriting VLANs 100, 200, and 300 to 900-900, which would not solve the problem of VLAN overlapping and could potentially cause confusion for customers.