GLBP Questions
Here you will find answers to Gateway Load Balancing Protocol (GLBP) Questions
Question 1
Which protocol allows for the automatic selection and simultaneous use of multiple available gateways as well as automatic failover between those gateways?
A. VRRP
B. GLBP
C. IRDP
D. HSRP
Answer: B
Explanation
In HSRP and VRRP, only the primary router is used to forward traffic, others routers must wait for the primary one down before they are used. Also, the bandwidth of the standby (and other) routers are not used and wasted. With GLBP, up to four gateways can be used simultaneously. There is still one virtual IP address in a group, but GLBP can automatically select which router in the group to forward traffic by sending the virtual MAC address of a selected router to that host.
Question 2
Which two statements are true about HSRP, VRRP, and GLBP? (Choose two)
A. GLBP and VRRP allow for MD5 authentication, whereas HSRP does not.
B. HSRP allows for multiple upstream active links being simultaneously used, whereas GLBP does not.
C. GLBP allows for router load balancing of traffic from a network segment without the different host IP configurations required to achieve the same results with HSRP.
D. Unlike HSRP and VRRP, GLBP allows automatic selection and simultaneous use of multiple available gateways.
E. GLBP allows for router load balancing of traffic from a network segment by utilizing the creation of multiple standby groups.
Answer: C D
Question 3
Refer to the exhibit. What is this configuration an example of?
| track 1 interface POS 5/0 ip routing track 2 interface POS 6/0 ip routing interface fastethernet 0/0 glbp 10 weighting 110 lower 95 upper 105 glbp 10 weighting track 1 decrement 10 glbp 10 weighting track 2 decrement 10 glbp 10 forwarder preempt delay minimum 60 |
A. GLBP weighting
B. Default AVF and AVG configuration
C. GLBP MD5 authentication
D. GLBP text authentication
E. GLBP timer manipulation
Answer: A
Explanation
The command “glbp 10 weighting 110 lower 95 upper 105″ specifies the initial weighting value (110), the lower (95) and the upper (105) thresholds. Notice that if the weight falls below the lower threshold then the router will not be an Active Virtual Forwarder (AVF) until the weight rises up to the higher threshold.
When the track object fails, the weighting is decremented by the value after the “decrement” keyword. In this case, POS5/0 and POS6/0 are tracked objects and if one of them fails, the weighting is decreased by 10 -> the weighting = 110 – 10 = 100. This value is still higher than the lower value 95 so this router is still the AVF. If both interfaces fail, the weighting will be smaller than the lower value so this router loses the AVF (until both interfaces are up again).
Question 4
Refer to the exhibit. Which four statements accurately describe this GLBP topology? (Choose four)
A. Router A is responsible for answering ARP requests sent to the virtual IP address.
B. If Router A becomes unavailable. Router B will forward packets sent to the virtual MAC address of Router A.
C. Router A alternately responds to ARP requests with different virtual MAC addresses.
D. Router B will transition from blocking state to forwarding state when it becomes the AVG.
E. If another router were added to this GLBP group, there would be two backup AVGs.
F. Router B is in GLBP listen state.
Answer: A B C E
Explanation
In a GLBP group, the AVG assigns a virtual MAC address to each member of the GLBP group. It also answers Address Resolution Protocol (ARP) requests for the virtual IP address -> A is correct.
When Router A becomes unavailable, Router B will take over the job of forwarding packets for virtual MAC address 0007.b400.0101 of Router A -> B is correct.
Router A can load balance traffic by alternately responding to ARP requests with different virtual MAC addresses. In this case two virtual MAC addresses 0007.b400.0101 and 0007.b400.0102 will be used alternately in ARP Replies -> C is correct.
Both Router A and Router B are in forwarding state. The trick here is client 1 only sends traffic to Router A while client 2 only sends traffic to Router B -> D is not correct.
If another router were added to this GLBP group, Router B and it can forward packets in the case of Router A fails -> E is correct (but notice that the newly added router would be in listening state).
In GLBP, there are 3 states in a group: active, standby, or listen. Members of a GLBP group elect one gateway to be the Active Virtual Gateway (AVG) for that group. It also elects one member as Standby Virtual Gateway (SVG). If there are more than two members, then the members that remain are in the listen state. In this case, Router A is elected as AVG while Router B is elected as SVG -> Router B is in active state -> F is not correct.
(Reference: http://www.cisco.com/en/US/products/hw/switches/ps708/products_configuration_example09186a00807d2520.shtml)
Question 5
Exhibit:
You work as a network engineer at Certprepare.com. You study the exhibit carefully. Which GLBP device hosts receive the MAC address assignment?
A. R1
B. R2
C. The AVG
D. The AVF
Answer: D
Explanation
Notice that the MAC address of the AVF is not the physical MAC address of R1 or R2. It is a virtual MAC address used in GLBP and is used by hosts to send traffic to these routers.
Question 6
Refer to the exhibit. Host A has sent an ARP message to the default gateway IP address 10.10.10.1. Which statement is true?
A. DSw2 will reply with the IP address of the next AVF.
B. DSw1 will reply with the MAC address of the next AVF.
C. Because of the invalid timers that are configured, DSw1 will not reply.
D. DSw1 will reply with the IP address of the next AVF.
E. Because of the invalid timers that are configured, DSw2 will not reply.
F. DSw2 will reply with the MAC address of the next AVF.
Answer: F
Explanation
The priorities of two switches are equal so GLBP uses IP address of that interface to choose the AVG -> DSw2 wins the election because of higher real IP address and become the AVG. Therefore it will reply all the incoming ARP Requests with the MAC address of the next AVF (DSw1 and DSw2 alternately in this case.
Question 7
Refer to the exhibit. The Gateway Load Balancing Protocol has been configured on routers R1 and R2, and hosts A and B have been configured as shown. Which statement can be derived from the exhibit?
A. The host A default gateway has been configured as 10.88.1.10/24.
B. The GLBP weighted load balancing mode has been configured.
C. The GLBP round-robin, load-balancing mode has been configured.
D. The GLBP host-dependent, load-balancing mode has been configured.
E. The host A default gateway has been configured as 10.88.1.1/24.
F. The host A default gateway has been configured as 10.88.1.4/24.
Answer: A
Question 8
Refer to the exhibit. What is the result of setting GLBP weighting at 105 with lower threshold 90 and upper threshold 100 on this router?
A. Only if both tracked objects are up will this router will be available as an AVF for group 1.
B. Only if the state of both tracked objects goes down will this router release its status as an AVF for group 1.
C. If both tracked objects go down and then one comes up, but the other remains down, this router will be available as an AVF for group 1.
D. This configuration is incorrect and will not have any effect on GLBP operation.
E. If the state of one tracked object goes down then this router will release its status as an AVF for group 1.
Answer: B
Explanation
Each tracked object goes down will decrease the weighting of this router by 10, that makes the weighting = 105 – 10 = 95. This value is still higher than the lower threshold (90) so this router is not lost its status as an AVF. Only if both tracked objects go down, the weighting will fall below the lower threshold (105 – 10 – 10 = 85 < 90) and this router will release its status as an AVF for group 1 -> B is correct.
Question 9
Which describes the default load balancing scheme used by the Gateway Load Balancing Protocol (GLBP)?
A. Per host using a strict priority scheme
B. Per session using a round-robin scheme
C. Per session using a strict priority scheme
D. Per GLBP group using a strict priority scheme
E. Per host basis using a round robin-scheme
F. Per GLBP group using a round-robin scheme
Answer: E
Explanation
In GLBP, there are 3 operational modes for load balancing:
+ Weighted load-balancing: traffic is balanced proportional to a configured weight
+ Host-dependent load-balancing: a host is used the same virtual MAC address as long as that MAC is participating in the GLBP group.
+ Round-robin load-balancing: each virtual MAC is used to respond to each ARP Request alternately. This is also the default load balancing scheme used by GLBP.
Question 10
Refer to the exhibit. GLBP has been configured on the network. When the interface serial0/0/1 on router R1 goes down, how is the traffic coming from Host1 handled?
A. The traffic coming from Host2 is forwarded through router R2 with no disruption. The traffic from Host1 is dropped due to the disruption of the load balancing feature configured for the glbp group.
B. The traffic coming from both hosts is temporarily interrupted while the switchover to make R2 active occurs.
C. The traffic coming from Host2 is forwarded through router R2 with no disruption. Host1 sends an ARP request to resolve the MAC address for the new virtual gateway.
D. The traffic coming from Host1 and Host2 is forwarded through router R2 with no disruption.
Answer: D (?)
Explanation
When R1 goes down, the weighting is decreased by 10 by default, priority = 110 – 10 = 100 but it is still higher than the lower threshold (90) so R1 does not give up its role as a virtual forwarder and continues forwarding traffic but the Serial 0/0/1 was down so traffic from Host 1 cannot be routed. Therefore we can’t say answer D is correct.
Maybe there is something wrong in the exhibit. To make answer D correct, the weighting command should be “glbp 10 weighting 100 lower 95 upper 105″.
Question 11
Refer to the exhibit. What statement is true based upon the configuration of router R1 and router R2?
A. Router R2 will become the master for Virtual Router 1, and router R1 will become the backup for Virtual Router 2.
B. Router R1 will become the master for Virtual Router 1, and router R2 will become the backup for Virtual Router 2.
C. Router R1 will become the active virtual gateway.
D. Router R2 will become the active virtual gateway.
E. The hello and hold timers are incompatible with OSPF type 5 LSAs.
F. The hello and hold timers are incompatible with multi-homed BGP.
Answer: C
Explanation
R2 is configured with the “priority” command so it will use the default priority value of 100, which is smaller than that of R1 (150) -> R1 will be active virtual gateway.
Can someone clarify – I have seen this question else where and the answers are different?
Question 4
A. Router A is responsible for answering ARP requests sent to the virtual IP address.
B. If Router A becomes unavailable. Router B will forward packets sent to the virtual MAC address of Router A.
C. Router A alternately responds to ARP requests with different virtual MAC addresses.
D. Router B will transition from blocking state to forwarding state when it becomes the AVG.
E. If another router were added to this GLBP group, there would be two backup AVGs.
F. Router B is in GLBP listen state.
Answer: A B C E
Else where the answers are A B C F
Question 4
hi,
is valid:
A B C E or A B C F
I think Q4 is misleading and there should only be 3 answers ideally to choose from instead of 4.
In a GLBP group, there can be only 1 Active Virtual Gateway and 1 Standby Virtual Gateway and 4 AVF’s (including the AVG and the SVG) at the most. Any other gateways apart from the AVG and the SVG are placed in the GLBP listen state. There cannot be two backup AVG’s in a group.
Based on this fact, the option “If another router were added to this GLBP group, there would be two backup AVGs.” is NOT correct.
Router B is already the Standby Virtual Gateway since there are only two gateways in this scenario and if another router were added to this GLBP group, it would be in the GLBP listen state.
This is from the Cisco website:
GLBP operates virtual gateway redundancy in the same way as HSRP. One gateway is elected as the AVG, another gateway is elected as the standby virtual gateway, and the remaining gateways are placed in a listen state. If an AVG fails, the standby virtual gateway will assume responsibility for the virtual IP address. A new standby virtual gateway is then elected from the gateways in the listen state.
Link: http://www.cisco.com/en/US/docs/ios/12_2t/12_2t15/feature/guide/ft_glbp.html#wp1039649
On second thoughts, I think the option…
“If another router were added to this GLBP group, there would be two backup AVGs.”
…might actually be correct. The following is from the same Cisco link in my previous post for GLBP :
“Other group members provide backup for the AVG in the event that the AVG becomes unavailable.”
Its all about how the question is worded I guess! Maybe it works just like the port state versus role in STP.
The state of the new gateway is “listen” and the role is “backup”.
For Q10, if the exhibits are correct, although the glbp values do not have much sense, I think we can suppose both routers R1 and R2 are running a routing protocol, so when Se0/0/1 goes down on R1, it starts re-routing the traffic through R2. Although we are not having optimal path, traffic will still be going out through R2.
What to you think?
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Q10. The track 100 not track 10. the answer D is correct.
@Johncc42, not sure what you mean with “track 100 not track 10″. Could you please explain?
@q10:
The routers in the GLBP group have no priorities set.
If the priority is not set, by default the Highest IP is tie breaker in deciding the AVG.
Does the above points have something to do with the answer D being applicable?
Kindly update.
Q10. I think we all agree that R2 is the AVG. The only “issue” we can find with this question is that, as per glbp weighting config at R1, it will not give up its AVF role once the Se0/0/1 goes down (which must sure is an error in the dump OR a “tricky” question???)
So, with this scenario, R1 will still receive packets from both hosts according to the default balancing method. The question here is what R1 is going to do with those packets.
What I think (just an opinion) is that in this kind of topology must sure R1 and R2 are running a L3 routing protocol, so when R1 receives a packet (as its Serial interface is down, and supposing the L3 routing protocol has re-converged) it will forward the packet to R2 and R2 to the cloud, so no disruption at all with the service and answer D looks like the best option. Makes sense?
Q8: Why is C not correct?
Q10. If no typo fault in numbers in the scenario, so we can conclude R1 will remain AVG even 0/1/1 goes down. In other hand we have vMAC for hosts that send to a switch (check the map please) and from there go toward the AVG. But what happening when AVG can’t send the traffic toward WAN link1? (there’s nothing mentioned about routing in the scenario so we can’t anticipate that) packets will drop in R1 and no response will back to the switch (this switch providing connectivity between routers) so switch will clear Fa0/0 as output destination of this vMAC (in its table) after a while and will send the packet to all its interfaces except original sender port. At last packet will forward by R2 and our switch will put port Fa0/1 as output interface for these vMACs (Host1 and Host2). Now you buddies don’t think we could have some interrupt before that the traffic forwarded to R2?
Q4. The correct options are A,B,C. The others are incorrect.
A. Router A is responsible for answering ARP requests sent to the virtual IP address.
Correct
B. If Router A becomes unavailable. Router B will forward packets sent to the virtual MAC address of Router A.
Correct
C. Router A alternately responds to ARP requests with different virtual MAC addresses.
Correct
The default load sharing ooption is Round Robin.
D. Router B will transition from blocking state to forwarding state when it becomes the AVG.
GLBP does not follow STP.
E. If another router were added to this GLBP group, there would be two backup AVGs.
F. Router B is in GLBP listen state.
GLBP Virtual Gateway Redundancy
GLBP operates virtual gateway redundancy in the same way as HSRP. One gateway is elected as the AVG, another gateway is elected as the standby virtual gateway, and the remaining gateways are placed in a listen state.
http://www.cisco.com/en/US/docs/ios/12_2t/12_2t15/feature/guide/ft_glbp.html
>Anon August 12th, 2012 Q8: Why is C not correct?
It is obviously incorrect!! Once the router lost AVF role, it has to get over the upper threshold to regain the role. Thus to satisfy this, once both interface become available again.
Q10. I suppose it is poor description for option D. The traffic from HOST1 and HOST2 have passed thru R2 before the s0/0/1 on R1 got down. So no disruption was detected there.
Q10
Answer D is the most appropriate answer. I test this scenario using GNS3. When Se 0/0/1 on R1 goes down, there is only one packet drop
Type escape sequence to abort.
Sending 10000, 100-byte ICMP Echos to 200.200.200.1, timeout is 2 seconds:
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!U.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
When I do a traceroute, the path of the packet is from host 1 through switch to R1 fa0/0 then back to switch then to fa0/1 of R2 and then to the Internet.
*One note for the syntax of the glbp command
glbp 10 10.21.8.10 255.255.255.255.0
I don’t think we need the subnet here.
I really want to say thank you is has been very useful website ……i don`t remember who first post glop link but it is valid and i passed on 22/9 scored 853
@David Nguyen
David, any idea what causes this behaviour? I would say that this can be achieved if some internal dynamic routing protocol inserts a new default route in the RIB and the R1 forwards everything it receives to it’s next hop (R2 instead of ISP 1), but this was not mentioned in the Scenario and is definitely not GLBP related.
@Josef
I think this might be the answer: When s0/0/1 goes down its priority is 110-10=100 > 90, so R1 does not give up its role as a virtual forwarder and continues forwarding traffic. That’s why traffic has its way to R1 as expected, and once there, it is sent over to R2 due to the routing protocol implemented.
@spanishguy
Yes, I agree, I’m just confused, because there is not a single word about the implemented routing in the question.
Q4. For me also option F “Router B is in GLBP listen state.” seemed strange before, but here is output from R2 (IPs don’t matter):
R2#sh glbp br
Interface Grp Fwd Pri State Address Active router Standby route
Fa0/0 10 – 100 Standby 10.1.1.1 10.1.1.2 local
Fa0/0 10 1 7 Listen 0007.b400.0a01 10.1.1.2 -
Fa0/0 10 2 7 Active 0007.b400.0a02 local -
The question author meant GLBP state from this table, I think.
@Dmitry,
Q4, For me the correct answers are A, B, C & F.
From Router A:
ROUTER-A#sh glbp brief
Interface Grp Fwd Pri State Address Active router Standby router
Et0/0 1 – 100 Active 10.21.8.10 local 10.21.8.2
Et0/0 1 1 – Active 0007.b400.0101 local -
Et0/0 1 2 – Listen 0007.b400.0102 10.21.8.2 -
ROUTER-B#sh glbp brief
Interface Grp Fwd Pri State Address Active router Standby router
Et0/0 1 – 100 Standby 10.21.8.10 10.21.8.1 local
Et0/0 1 1 – Listen 0007.b400.0101 10.21.8.1 -
Et0/0 1 2 – Active 0007.b400.0102 local -
Q4 corresct answers are ABCE.
every body is just thing and making try but not all.
so answer is ABC and E.
Regarding Q10, I might be totally off here, so please correct me if I’m wrong
R2 is the AVG because its IP address is the highest of the two, IP address is the tie breaker because neither R2 or R1 have GLBP priority set, default 100 for both.
So when the S0/0/1 interface of R1 goes down, weighting rightly goes to 110 – 10 = 100 which is still above the lower threshold and does not give up its AVF status.
If we understand these two points, Host 1 and Host 2 will direct traffic to R2 because it is the AVG. And it remains the AVG regardless of whether the S0/0/1 interface goes down. Therefore, D is the correct answer.
Please correct me if I’m wrong. I’m hoping to take the exam at the end of Dec.
AVG is like a processor (Commander)…..he doesn’t forwards the trafiic. Actually AVF does this job. AVG just decides which AVF is going to forward the trafiic from host.
question 10, anybody had it on a test ? I still do not understand answer D.
Q4, the answers are A, B, C & F.
In GLBP, there is always only one Backup-AVG!
You can see three Ruters with GLBP-Configuration.
Look here, the output from the AVG
CatalystA# show glbp
Vlan50 – Group 1
State is Active
7 state changes, last state change 03:28:05
Virtual IP address is 192.168.1.1
Hello time 3 sec, hold time 10 sec
Next hello sent in 1.672 secs
Redirect time 600 sec, forwarder time-out 14400 sec
Preemption enabled, min delay 0 sec
Active is local
Standby is 192.168.1.11, priority 150 (expires in 9.632 sec)
Priority 200 (configured)
Weighting 100 (default 100), thresholds: lower 1, upper 100
Load balancing: round-robin
There are 3 forwarders (1 active)
Forwarder 1
State is Active
3 state changes, last state change 03:27:37
MAC address is 0007.b400.0101 (default)
Owner ID is 00d0.0229.b80a
Redirection enabled
Preemption enabled, min delay 30 sec
Active is local, weighting 100
Forwarder 2
State is Listen
MAC address is 0007.b400.0102 (learnt)
Owner ID is 0007.b372.dc4a
Redirection enabled, 598.308 sec remaining (maximum 600 sec)
Time to live: 14398.308 sec (maximum 14400 sec)
Preemption enabled, min delay 30 sec
Active is 192.168.1.11 (primary), weighting 100 (expires in 8.308 sec)
Forwarder 3
State is Listen
MAC address is 0007.b400.0103 (learnt)
Owner ID is 00d0.ff8a.2c0a
Redirection enabled, 599.892 sec remaining (maximum 600 sec)
Time to live: 14399.892 sec (maximum 14400 sec)
Preemption enabled, min delay 30 sec
Active is 192.168.1.12 (primary), weighting 100 (expires in 9.892 sec)
Question 4: Cisco state on it`s website: “GLBP Active Virtual Gateway
Members of a GLBP group elect one gateway to be the active virtual gateway (AVG) for that group. Other group members provide backup for the AVG in the event that the AVG becomes unavailable. The AVG assigns a virtual MAC address to each member of the GLBP group. Each gateway assumes responsibility for forwarding packets sent to the virtual MAC address assigned to it by the AVG. These gateways are known as active virtual forwarders (AVFs) for their virtual MAC address.” Read: “Other members!”.
Also please check the book: “Foundation learning for Switch 642-813″ page 217, where it states, see printscreen (couldnt copy it): http://tinypic.com/r/33v0kef/6
With HSRP there is 1 active, 1 standby and several candidates doing nothing. With GLBP there is: 1 AVG, several AVF`s! If the AVG fails, one of the AVF`s will take over for the AVG, this based on priority or if priority is equal highest ip adres. Answer F is also wrong, from what i know, in that with GLBP all routers are actively taking part in forwarding traffic, remember GLBP is active/active so its load balancing by default. So a listen state?
So for me its ABCE. You guys are welcome to correct me.
Euhm.. go to the section “Gateway Redundancy Questions”. There, the explanation of Question 8 says: “RA is elected as the AVG and RB is elected as the standby virtual gateway. If another router is added to this GLBP group, it will become a backup AVG -> there is only one backup AVG -> C is not correct.”. So it seems Q4 here doesn’t make any sense to me any more: Either ABC, E is not correct, there is only one AVG backup, or it`s not and Question 8 of the following topic is wrong? Admin?
Sorry for spamming, but check dump by Glop, question 18 of 150. The correct answer here (according to glop) should be ABCF. Note, in the dump the order of questions is diffrent, so do memorize ABCF, but the answers given.
There is nothing like backup AVG, it is backup or standby virtual gateway…
Please change the last question. It reads :
R2 is configured with the “priority” command so it will use the default priority value of 100, which is smaller than that of R1 (150) -> R1 will be active virtual gateway.
Should read:
R2 is ***NOT**** configured with the “priority” command
q.10
I think R1 is the AVG, when S0/0 of R1 is down, the priority of R1 will be 100, which is equal to R2 priority, so may be R2 will be the AVG because it has higher IP address (10.1.1.3), while R1 IP is 10.1.1.2
Question 4
As for ARP on IPv6, there isn’t any. So anything with ARP is NOT correct! On the other hand, there is not enough correct answers to choose from. This question is simply WRONG!
However, we could always pretend that there is an ARP inside IPv6.
Q11. preempt not enable
ip of R2 is .7 higher than R1
i think R2 will become Active, not R1
Q2,Q6 & Q10 on test today.
Q4
” – Each AVF is active and responsible for forwarding traffic destined to its vMAC.
- Each AVF listens to others, if one AVF can no more forward traffic, all listening AVF will compete to take the responsibility of the failed AVF vMAC along with its own (AVF with higher weighting wins).”
taken from: http://cciethebeginning.wordpress.com/2008/09/06/glbp-gateway-load-balancing-protocol/
therefore option F is correct…
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Q10 hasn´t sense for me. the answer D is correct? Why?
CCNP SWITCH 642-813 Official Certification Guide
“GLBP also can use a weighting function to determine which router becomes the AVF for a
virtual MAC address in a group. Each router begins with a maximum weight value (1 to
254). As specific interfaces go down, the weight is decreased by a configured amount.
GLBP uses thresholds to determine when a router can and cannot be the AVF. If the
weight falls below the lower threshold, the router must give up its AVF role. When the
weight rises above the upper threshold, the router can resume its AVF role.”
The track in Q10 decrease 10 and the value configurated are 110 (110-10=100) and lower value are 95 this indicate that R1 continues being AVF, why this answer asume R2 is the path of the traffic? I understood R2 is the AVG but this don´t explain the traffic path, I known the default round robin load balancing, if Host2 path through R2, Host1 Don´t have to go for the R2?
Why it assumes that the road traffic is host1 through R2?
Thanks for the clarification
I correct this part
Host1 Don´t have to go for the R1?
i can’t understand clearly AVG and AVF can any body explain to me one week to go for exam.
@Me, AVG answers all ARP requests. AVGs route the data packets.
Q.10: glbp 10 weighting track 100 command syntax is glbp weighting track {object-number}
[decrement value]. As we can see in the command decrement value is not specified, so what we must assume the decrement value to be when it is not specified?