Home » Cisco » 350-080 » Which two statements about SAN port channels configured on Cisco Nexus 5000 Series switches are true?
Which two statements about SAN port channels configured on Cisco Nexus 5000 Series switches are true? (Choose two.)
A. The bring up protocol automatically detects and overrides any misconfiguration.
B. You can manually configure channel groups, or they can be automatically created.
C. Changes in configuration to the SAN port channel interface must also be made to all members of the channel group.
D. The port channel protocol uses the exchange fabric parameters command to communicate across peer ports in an ISL.
E. The port channel protocol ensures that a set of ports is eligible to be part of the same SAN port channel.
Correct Answer: BE
Explanation/Reference:
Explanation:
A user-configured channel group cannot be converted to an autocreated channel group. However, you can convert an autocreated channel group to a manual channel group. This task is irreversible. The channel group number does not change, but the member ports operate according to the properties of the manually configured channel group, and channel group autocreation is implicitly disabled for all the member ports.
If you enable persistence, be sure to enable it at both ends of the SAN port channel.
The port channel protocol expands the port channel functional model in Cisco SAN switches. It uses the exchange peer parameters (EPP) services to communicate across peer ports in an ISL. Each switch uses the information received from the peer ports along with its local configuration and operational values to decide if it should be part of a SAN port channel. The protocol ensures that a set of ports are eligible to be part of the same SAN port channel. They are only eligible to be part of the same port channel if all the ports have a compatible partner.
Reference: http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/san_switching/b_Cisco_Nexus_5000_Series_NXOS_SAN_Switching_Configuration_Guide/Cisco_Nexus_5000_Series_NX-OS_SAN_Switching_Configuration_Guide_chapter7.html(san port channel protocol)