ENCOR Exam - Question 754

Question

SIMULATION-Guidelines-This is a lab item in which tasks will be performed on virtual devices. •	Refer to the Tasks tab to view the tasks for this lab item. •	Refer to the Topology tab to access the device console(s) and perform the tasks. •	Console access is available for all required devices by clicking the device icon or using the tab(s) above the console window. •	All necessary preconfigurations have been applied. •	Do not change the enable password or hostname for any device. •	Save your configurations to NVRAM before moving to the next item. •	Click Next at the bottom of the screen to submit this lab and move to the next question. •	When Next is clicked, the lab closes and cannot be reopened. Topology-Tasks-Implement GLBP between DISTRO-SW1 and DISTRO-SW2 on VLAN100 for hosts connected to ACCESS-SW1 to achieve these goals:1. Configure group 30 using the virtual IP address of 192. 168. 1. 254. 2. Configure DISTRO-SW1 as the AVG using a priority value of 130. 3. If DISTRO-SW1 suffers a failure and recovers, ensure that it automatically resumes the AVG role after waiting for a minimum of 35 seconds.

Examice · Accepted Answer

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olaniyijt · Answer

Primary Switch:
interface Vlan100
 ip address 192.168.1.2 255.255.255.0
 glbp 30 ip 192.168.1.254
 glbp 30 priority 130
 glbp 30 preempt delay minimum 35
end

Secondary Switch:
interface Vlan100
 ip address 192.168.1.3 255.255.255.0
 glbp 30 ip 192.168.1.254

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipapp_fhrp/configuration/15-mt/fhp-15-mt-book/Configuring-GLBP.html

larsis · Answer

Tbh I wouldn't touch the counters. I think they want us to configure preempt delay instead:
Primary SW:
 glbp 30 ip 192.168.1.254
 glbp 30 priority 130
 glbp 30 preempt delay minimum 35

Secondary SW:
 glbp 30 ip 192.168.1.254

HungarianDish_111 · Answer

SW2(config)#do sh glbp
Vlan100 - Group 30
  State is Standby
    3 state changes, last state change 00:01:54
  Virtual IP address is 192.168.1.254
  Hello time 3 sec, hold time 35 sec
    Next hello sent in 2.048 secs
  Redirect time 600 sec, forwarder timeout 14400 sec
  Preemption disabled
  Active is 192.168.1.2, priority 130 (expires in 35.296 sec)
  Standby is local
  Priority 100 (default)
  Weighting 100 (default 100), thresholds: lower 1, upper 100
  Load balancing: round-robin
  Group members:
    5254.0017.8064 (192.168.1.3) local
    5254.001a.8064 (192.168.1.2)
  There are 2 forwarders (1 active)
  Forwarder 1
    State is Active
      1 state change, last state change 00:01:57
    MAC address is 0007.b400.1e01 (default)
    Owner ID is 5254.0017.8064
    Preemption enabled, min delay 30 sec
    Active is local, weighting 100
  Forwarder 2
    State is Listen
    MAC address is 0007.b400.1e02 (learnt)
    Owner ID is 5254.001a.8064
    Time to live: 14400.000 sec (maximum 14400 sec)
    Preemption enabled, min delay 30 sec
    Active is 192.168.1.2 (primary), weighting 100 (expires in 37.280 sec)

sledgey121 · Answer

Just passed but had 3 labs that are not detailed on this site. All good though and should be well within the capabilities of CCNA/CCNP network engineers.

HungarianDish_111 · Answer

This exercise requires to change the hold time value. The hello time is not mentioned. I suppose that it is better to leave the hello time on the default 3 sec, and only change the hold time to 35 sec (from 10 sec).

interface Vlan100
 ip address 192.168.1.2 255.255.255.0
 glbp 30 ip 192.168.1.254
 glbp 30 timers 3 35
 glbp 30 priority 130
 glbp 30 preempt

#show glbp
Vlan100 - Group 30
  State is Init (interface down)
  Virtual IP address is 192.168.1.254
  Hello time 3 sec, hold time 35 sec
  Redirect time 600 sec, forwarder timeout 14400 sec
  Preemption enabled, min delay 0 sec
  Active is unknown
  Standby is unknown
  Priority 130 (configured)

HungarianDish_111 · Answer

It was requested to configure the hold time 35 sec on SW1. SW2 is not mentioned. Thus, I only configured it on SW1. Actually, SW2 (standby AVG) took the timer values from SW1 (active AVG) anyways.

danman32 · Answer

I agree, hold timer manipulation is not the means of delaying preempt.
The hold time is when an AVG will determine a failure has occurred.
If the question was asked to delay action on failure, then managing the timers would be appropriate, though in real world probably not ideal.
But criteria is about the primary delaying taking back AVG role.

Tadese · Answer

Primary Switch:
interface Vlan100
ip address 192.168.1.2 255.255.255.0
glbp 30 ip 192.168.1.254
glbp 30 priority 130
glbp 30 preempt delay minimum 35
end

Secondary Switch:
interface Vlan100
ip address 192.168.1.3 255.255.255.0
glbp 30 ip 192.168.1.254

wengzaii96 · Answer

is the exam LAB allow tab ?

Wanessamgp · Answer

"Use the optional delay and minimum keywords and the seconds argument to specify a minimum delay interval in seconds before preemption of the AVG takes place. " https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipapp_fhrp/configuration/15-mt/fhp-15-mt-book/Configuring-GLBP.html

Iarn · Answer

Tried so many different switch none have glbp even as an available option?!

ENCOR Exam - Question 754

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