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CCNP Practical Studies: Troubleshooting by Donna L. Harrington

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Chapter 6's Review Questions

1: On the 1900, portfast is enabled on the 10-Mbps ports and disabled on the uplink ports. Can you change this? If so, how? Give a practical example of using portfast.
A1: Answer: Portfast is enabled by default on the 10-Mbps ports in the assumption that they are host ports on the 1900. It is not enabled on the 100-Mbps uplink ports (ports A and B) assuming they connect to another switch or server. The commands on the 1900 are as follows: menu, p for port, select a port, and then h for portfast mode. Refer back to Table 6-7 for portfast commands on other devices. All host ports should be enabled for portfast. Specific examples include a host that can't find a domain controller or a DHCP server or a Novell client who ...

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