300-115 Question 2
A network engineer wants to add a new switch to an existing switch stack. Which configuration must be added to the new switch b efore it can be added to the switch stack?
A. No configuration must be added.
B. stack ID
C. IP address
D. VLAN information
E. VTP information
Correct Answer: A
Explanation/Reference:
Switch Stack Offline Configuration
You can use the offline configuration feature to provision (to supply a configuration to) a new switch before it joins the swit ch stack. You can configure in advance the stack member number, the switch type, and the inter- faces associated with a switch that is not currently part of the stack . The configuration that you create on the switch stack is called the provisioned configuration . The switch that is added to the switch stack and that re- ceives thi s configuration is called the provisioned switch .
You manually create the provisioned configuration through the switch stack-member-number provision type global configuration co mmand. The provisioned configuration is automatically created when a switch is added to a switch stack and when no provisioned configuration exists.
When you configure the interfaces associated with a provisioned switch (for example, as part of a VLAN), the switch stack accep ts the configuration, and the information appears in the running configuration. The interface associated with the provisioned switch is not active, operates as if it is administratively shut down, and the no shutdown interface configuration command does not return it to active service. The interface associated with the pro visioned switch does not appear in the display of the specific feature; for example, it does not appear in the show vlan user EXEC command output.
The switch stack retains the provisioned configuration in the running configuration whether or not the provi- sioned switch is part of the stack. You can save the provisioned configuration to the startup configuration file by entering the copy running-config startup-config privileged EXEC command. The startup configuration file ensures that the switch stack can reload and can use the saved information whether or not the provisioned switch is part o f the switch stack. Effects of Adding a Provisioned Switch to a Switch Stack.
When you add a provisioned switch to the switch stack, the stack applies either the provisioned configuration or the default co nfiguration. Table 5-1 lists the events that occur when the switch stack compares the provisioned configuration with the provisioned switch.
Table 5-1 Results of Comparing the Provisioned Configuration with the Provisioned Switch
Scenario Result
The stack member num- 1. If the stack member number The switch stack applies bers and the switch types of the provisioned switc
h the provisioned configura-
match. matches the stack member num- tion to the provisioned ber in the provisioned configura- switch and adds it to the tion o
n the stack, and stack.
2. If the switch type of the provi-
sioned switch matches the switch
type in the provisioned configura-
tion on the stack.
The stack member num- 1. If the stack member number The switch stack applies bers match but the switch of the provisioned switc
h the default configuration to
types do not match. matches the stack member num- the provisioned switch and ber in the provisioned configura-
tion on the stack, but adds it to the stack.
2. The switch type of the provi- The provisioned configura- sioned switch does not match the tion is changed to reflect switch
type in the provisioned the new
information.
configuration on the stack.
The stack member num- The switch stack applies
ber is not found in the pro- the default configuration to
visioned configuration. the provisioned switch and
adds it to the stack.
The provisioned configura-
tion is changed to reflect
the new information.
The stack member num- The stack master assigns a new The switch stack applies ber of the provisioned stack member number to the
pro- the provisioned
configura- switch is in conflict with an visioned switch. tion to the provisioned existing stack member. switch and adds it to
the
The stack member numbers and stack.
the switch types match:
The provisioned configura-
1. If the new stack member
tion is changed to reflect
number of the provisioned switch
the new information.
matches the stack member num-
ber in the provisioned configura-
tion on the stack, and
2. If the switch type of the provi-
sioned switch matches the switch
type in the provisioned configura-
tion on the stack.
The stack member numbers The switch stack applies
match, but the switch types do the default configuration to not match: the provisioned switch and
adds it to the stack.
1. If the stack member number
of the provisioned switch The provisioned configura-
matches the stack member num- tion is changed to reflect
ber in the provisioned configura- the new information.
tion on the stack, but
2. The switch type of the provi-
sioned switch does not match the
switch type in the provisioned
configuration on the stack.
The stack member num- The switch stack applies
ber of the provisioned the default configuration to
switch is not found in the the provisioned switch and
provisioned configuration. adds it to the stack.
Reference:
http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/software/release/12- 2_55_se/configuration/guide/3750xscg
/swstack.html
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