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1.8 Describe chassis virtualization and aggregation technologies
Fichas del conjunto (35)
- 1What do you configure on the stack master?System-level (global) features that apply to all stack members
Interface-level features for each stack member - 2How are devices in a stack and the stack itself identified?the stack has a network bridge ID and, if doing layer 3 routing, a router mac address. (these come from the stack master)
each switch is ID'd by it's stack member # - 3if the stack master goes down, who becomes next master?switch with next highest stack priority
- 4Where is stack configuration data saved?in the master and in each stack member in case master goes down
- 5is the management IP of a stack tied to a master switch?nope, it's the same even if the master goes down and another switch becomes the new master
- 6what are 3 ways to manage a stack?Network Assistant
Command-line over a serial connection to the console port of any stack member or the Ethernet management port of a stack member
A network management application through SNMP - 7what's the difference between a stack and a cluster?A stack is bunch of switches working as 1 logical switch, a cluster is a bunch of independent switches connected together through lan ports
- 8what is the max number of switches in a stack?9
- 9What is a standalone switch?It's a 1 switch stack basically, with itself as master. You can daisy chain this to other standalone switches and expand the stack
- 10should you connect two switches that are already powered on to a stack?No. Don't hot add them. Make sure the new switch is off first before connecting them
- 11can you mix and match switches with different hardware?Yes, but the one with the most features should be master
- 12How can you tell if the stack is operating at full bandwidth?Press the Mode button on a stack member until the Stack mode LED is on. The last two right port LEDs on all switches in the stack should be green. Depending on the switch model, the last two right ports are 10-Gigabit Ethernet ports or small form-factor pluggable (SFP) module ports (10/100/1000 ports). If one or both of these LEDs are not green on any of the switches, the stack is not operating at full bandwidth.
- 13What happens if you connect two running stacks to each other?each stack has a master, but there can only be 1. 1 is elected and all switches reload to accept the new configuration from the master.
(called merging) - 14What happens if you disconnect a few switches in the stack but keep them running?They will divide (partition) into duplicate stacks and cause and IP conflict. Change the IP address of the new stack
- 15what is Virtual Switching System (Vss)some switches have a chassis that supports slots and multiple modules. You can link two switches with a VSL virtual switch link so if one switch's supervisor module goes down, the other takes over.
catalyst 4500R, 6500, and 8500 - 16what are the 3 modes of redundancy readiness you can configure for a standby supervisor using VSS?Route processor redundancy (RPR)
Route processor redundancy plus (RPR+)
Stateful switchover (SSO) - 17what is Route processor redundancy (RPR)The redundant supervisor is only partially booted and initialized. When the active module fails, the standby module must reload every other module in the switch and then initialize all the supervisor functions.
- 18what is Route processor redundancy plus (RPR+)The redundant supervisor is booted, allowing the supervisor and route engine to initialize. No Layer 2 or Layer 3 functions are started, however. When the active module fails, the standby module finishes initializing without reloading other switch modules. This allows switch ports to retain their state.
- 19what is Stateful switchover (SSO)The redundant supervisor is fully booted and initialized. Both the startup and running configuration contents are synchronized between the supervisor modules. Layer 2 information is maintained on both supervisors so that hardware switching can continue during a failover. The state of the switch interfaces is also maintained on both supervisors so that links do not flap during a failover.
- 20what are the failover times for the 3 modes of VSS redundancy?RPR >2 minutes
RPR+ >30 seconds
SSO >1 second - 21how do you configure the redundancy mode of a VSS switch?Switch(config)# redundancy
Switch(config-red)# mode {rpr | rpr-plus | sso} - 22how can you verify redundancy state?Switch# show redundancy states
- 23how do you configure what information a supervisor should synchronize?Switch(config)# redundancy
Switch(config-red)# main-cpu
Switch(config-r-mc)# auto-sync {startup-config | config-register | bootvar} - 24What is Nonstop forwarding (NSF)?Instead of waiting on any configured Layer 3 routing protocols to converge and rebuild the FIB, a router can use NSF to get assistance from other NSF-aware neighbors. The neighbors then can provide routing information to the standby supervisor, allowing the routing tables to be assembled quickly
- 25what routing protocols support NSF?BGP, EIGRP, OSPF, and IS-IS
- 26how do you configure NSF for BGP?Switch(config)# router bgp as-number
Switch(config-router)# bgp graceful-restart - 27how do you configure NSF for OSPF?Switch(config)# router ospf process-id
Switch(config-router)# nsf - 28how do you configure NSF for EIGRP?Switch(config)# router eigrp as-number
Switch(config-router)# nsf - 29how do you configure NSF for IS-IS?Switch(config)# router isis [tag]
Switch(config-router)# nsf [cisco | ietf]
Switch(config-router)# nsf interval [minutes]
Switch(config-router)# nsf t3 {manual [seconds] | adjacency}
Switch(config-router)# nsf interface wait seconds - 30How can you see the switch stack ports?3750−Stk#show switch stack−ports
- 31how can you see switch stack neighbors?3750−Stk# show switch neighbors
- 32How can you see stack members, roles. and priority?3750−Stk>show switch
- 33how do you change the number of a switch in a stack? Say if you want switch 3 to be switch 5 or whatever?Switch3(config)# switch renumber
(exit down to priv mode)
Switch3# reload slot - 34How do you change a switch's priority?Switch3(config)# switch priority
- 35how can you check for software compatibility issues in a stack?show platform stack−manager all
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- CWNA (CCNP Switch Exam Topics) Networking Fichas sobre 1.8 Describe chassis virtualization and aggregation technologies, creado por Dustin Sanders el 21/01/2017.
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- Creado por Dustin Sanders · 21 ene 2017
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- Copiado por Dustin Sanders · 21 ene 2017
- Copiado por Dustin Sanders · 21 ene 2017
- Copiado por Dustin Sanders · 21 ene 2017
- Copiado por Dustin Sanders · 21 ene 2017
- Copiado por Dustin Sanders · 21 ene 2017
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