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Question 42

A network administrator has designed a network with two multilayer switches on the distribution layer, which act as default gateways for the end hosts. Which two technologies allow every end host in a VLAN to use both gateways? (Choose two.)

    Correct Answer: B, D

    GLBP (Gateway Load Balancing Protocol) allows for load balancing by using multiple virtual MAC addresses associated with a single virtual IP address, enabling every end host in a VLAN to use both gateways. MHSRP (Multiple HSRP) can be configured to provide load sharing across multiple HSRP groups, allowing each end host to use both gateways by configuring them with different active routers for each group. Therefore, both these technologies enable end hosts in a VLAN to use both default gateways.

Discussion
TTTTTTOptions: BD

GLBP and MHSRP ------Correct

mhizha

I agree with your 2 answers. People need to understand that VSS is NOT classified as a FHRP

Matt2727

The question is asking which 'technology' allows 'every' end host. Its not asking about a specific protocol. B & C make the most sense since 'every' end host can use both gateways. MHSRP requires a splitting of end hosts to use 1 particular gateway and is configured with 2 groups on the active standby routers.

laterstOptions: BC

I'm going for B and C. VRRP - and HSRP suffer from that fact that they both have one primary/master router which provides the _single_ default gateway (single VIP, single virtual MAC) MHSRP provides two Virtual IPs, so end hosts would have to be configured with two default gateways - not common for end hosts. The same concept would apply to multiple VRRP groups. GLBP provides one virtual IP and multiple virtual MAC Addresses; the ARP replies from the Active Virtual Gateway to the hosts will use all the virtual MACs (one for each virtual forwarder) in round robin fashion, so B is correct. which leaves VSS, where both ML Switches form a single virtual switch and no FHRP is required at all to use them both.

cwauchOptions: BD

B. GLBP - provides gateway redundancy for endpoints and load balancing D. MHSRP - provides gateway redundancy for endpoints and load balances by using multiple HSRP instances. * VSS - I feel this is wrong because the question talks about the distribution layer, where the above FHRPs would be used and VSS is used at the core layer upstream of the where the gateway resides.

Yaa_Man_Options: BD

Guys, I think the term we're looking for it's load sharing If so: VRRP - does not support load sharing GLBP - support load balancing, thus supports load sharing as well VSS - the question states that there are 2 distinctive switches MHSRP -it does support load sharing HSRP - does not support load sharing Final answer B D

Taku2023

can you please drop a link for mhsrp i need more details of the topic

wamendozaOptions: AB

After reviewing carefully, i see this in the question: "A network administrator has designed a network with two multilayer switches on the distribution layer," This it makes me think that he is talking about two separate switches (sw 1 & sw 2)... This is the problem, VSS cannot be a options because is a physical switch that see how one, so I would rule out this option...

KlimyOptions: BC

VSS makes more sense than "MHSRP". MHSRP is just an administrative load balancing, so "in a VLAN" PCs wouldn's use both gateways. As D is incorrect and you still have to X something, i would go with VSS. This question is faulty.

SeMo0o0oOptions: BC

im going with B & C

SeMo0o0o

Look at the word "Both". each host should be able to use !!! both!!!. MHSRP can't do this. only GLBP and VSS can do this also, the question is saying which 2 Technologies, not which 2 FHRP protocols.

andriuka

I think CD is correct. GLBPs AG is responsible for answering for ARP request, and at a given time endpoint will have only one AF as its gateway, so this brakes a request two have both. MHSRP enable to have two HSRP groups, in that way endpoint can have both gateway configured if needed. VSS eliminates FHRP at all as both switches acts like Active-Active solution. (https://ccnp300-115.blogspot.com/2016/11/virtual-switching-system-vss.html)

IgorLVGOptions: AB

A & B are the answers. GLBP can serve the traffic of the same vlan (load balance) and VRRP does the same too. VSS would be a good answer but the devbice would need to connect to both switches via echannel

Brandonkiaora

The answer should be BC. GLBP, VSS, and MHSRP are all amazing protocols that allow load balance and redundancy. But this question asks the host in the same VLAN to use both gateways, so you must dig deeper into MHSRP. MHSRP is simply a combination of two HSRP protocols at the same time, configuring two routers with two HSRP sessions, enabling two virtual IPs representing R1 and R2 as active routers separately. So any host can only choose one default gateway at a time, like host A on R1 chooses R1, and host B on R2 chooses R2; it's globally loadbalance and redundant, but host A can't use both gateways at the same time, it's just simple HSRP in a local view.

Hamo1Options: BE

I think B & E, check this link please https://search.cisco.com/search?query=Cisco%20Nexus%209000%20Series%20Switches%20:%20HSRP%20Load%20Sharing&locale=enUS&bizcontext=&cat=DeepQA&mode=text&clktyp=click&autosuggest=true&istadisplayed=false&tareqid=&categoryvalue=Cisco%20Nexus%209000%20Series%20Switches

sharonmillerOptions: BC

two TECHNOLOGIES, not two FHRP protocols.... BC

VegasBFOptions: BC

MHSRP allows only SINGLE active router for a specific VLAN.

tumajayOptions: BD

The answers are BD

HelloENGs

I have done a CCNP encore and I do not remember anything as MHSRP, now I see what is it

HelloENGs

*a CCNP ENCOR Course

f490efcOptions: BD

Think VSS is Active/Standby in terms of Default Gateway placement so client can't really use the Standby box. MHSRP seems more appropriate to me.

post20Options: BC

B and C