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Hardware Scalability
This section reviews the hardware that is deployed in the network to ensure that feature requirements, scalability, and hardware resources will meet IPT requirements. The process of hardware replacement is also critical to higher availability. Table B-28 provides a list of questions that you should ask customers to analyze whether the existing hardware in the network supports the IPT deployment: If not, you can suggest the modifications required to support the IPT deployment.
| No. | Question | Answer |
|---|---|---|
| 1 | Are there any non-Cisco switches at the access layer in the network? |  Yes No |
| 2 | Do you need to connect the Cisco IP Phones to the non-Cisco access switches? | Yes No |
| 3 | If you have non-Cisco switches, do they support 802.1Q/p? | Yes No |
| 4 | Which Power over Ethernet (PoE) standard does the organization want to use? | Cisco PoE IEEE 802.3af |
| 5 | Can the other Cisco switches in the access layer be field upgraded to support inline power? | Yes No |
| 6 | Will the hardware scale to support the IPT endpoints, such as IP phones and gateways? | Yes No |
| 7 | Does the organization have chassis redundancy where appropriate? | Yes No |
| 8 | Does the organization have module redundancy where appropriate? | Yes No |
| 9 | Does the organization keep spare hardware parts onsite? | Yes No |
| 10 | Does the organization have a service contract with the hardware vendor to replace the defective parts? If yes, what is the agreed response time? | Yes No Response Time_______________ |
Notes/Comments
You must determine the hardware scalability section for every site in the network. Key things to note are whether the access layer switches are Cisco or non-Cisco switches and the support of 802.1Q/p protocol, because these determine the QoS capabilities of access layer switches and which PoE standard the organization uses.
