Refer to the exhibit. An engineer configures the Cisco ACI fabric for VMM integration with ESXi servers that are to be connected to the ACI leaves. The server team requires the network switches to initiate the LACP negotiation as opposed to the servers. The LAG group consists of two 10 Gigabit Ethernet links. The server learn also wants to evenly distribute traffic across all available links. Which two enhanced LAG policies meet these requirements? (Choose two.)
To meet the requirement of the network switches initiating the LACP negotiation, the LACP Mode should be 'LACP Active.' For effective load balancing across all available links, using 'Source and Destination IP Address and TCP/UDP Port' is suitable because it leverages multiple fields, providing a more granular distribution of traffic. This method ensures that traffic is more evenly distributed across the links, addressing the requirement to evenly distribute traffic across all available links.
CE. Wrong comments here, unclear why. 2 part to setup LACP & LB algorithm. LACP needs to be active, unclear why omitted here in discussion by someone, it is enhanced LAG policy, so part of question. Cannot be source IP (TEP is not changing), cannot be dst port - same for common services, cannot be dest IP - same destination VM. So fits source & dst mac.
The answer is B and D. Explanarion: LACP Mode: LACP Standby - In LACP available only two modes - Active and Passive LACP Mode: Active its standard LACP mode LB Mode: Source and Destination MAC Address its a standard LACP balancing mode And question says: Which two enhanced LAG policies meet these requirements? (Choose two.) LB Mode: Destination IP Address and TCP/UDP Port LB Mode: Source IP Address and TCP/UDP Port This two modes are LACP enhanced balancing modes
The server team requires the network switches to initiate the LACP negotiation as opposed to the servers. -->> A. LACP Mode: LACP Standby. I think that one part of the answer is A, because in ACI is configured LAG policy (within vSwitch Policy) that will be applied to VDS. And since network switches should initiate negotiation (LACP Active), on VDS should be configured LACP Pasive
Correct, the vswitch policies apply to the VDS not the leaf switch thus LACP should be set to Passive and since this is a regular VDS I would use source and destination MAC.
complicated but I agree
This is a vSwitch policy and they want network switches to initiate LACP negotiations -> LACP Standby. Traffic is flowing from a limited number of VMs to the rest of the network -> LB Mode: Destination IP/Port. LB Mode can be different in the opposite direction!
This is the correct answer. The configs are will be configured on the VDS and face back to the ACI Leaves. https://aci-lab.ciscolive.com/lab/pod10/acivmm/vmm-build
for me it is C and E based on this document: https://community.cisco.com/t5/data-center-and-cloud-knowledge-base/vmm-integration-with-enhanced-lacp/ta-p/4522997
possibly CE consider vmotion - The LAG group consists of two 10 Gigabit Ethernet links Cisco ACI considers the frequent move of an IP address from one MAC address to the other and potentially between ports as a misconfiguration. Features such as rogue endpoint control may quarantine the endpoints and raise a fault. https://www.cisco.com/c/en/us/td/docs/dcn/whitepapers/cisco-application-centric-infrastructure-design-guide.html
In my opinion, it must be D and E. Because usually source port is ephemeral port which changes all the time, as result deifferent hashes that put traffic across multiple links. Secondly LACP must be ACTIVE.
everyone forgets that we're configuring the "remote" side of connection (DVS on servers). ergo, it has to be LACP Passive (here called "standby"), and best-from-provided load balancing decision would be destination ip + tcp/udp
I think C and E. I think that B and D are not correct as there are no such options
i think it is D and E
BD, Cisco Application Centric Infrastructure Virtual Edge, VXLAN mode traffic always uses the source IP address as the TEP IP address. To ensure proper load balancing, we recommend the algorithm Source and Destination TCP/UDP Port. https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/aci_virtual_edge/configuration/2-x/Cisco-ACI-Virtual-Edge-Configuration-Guide-202/Cisco-ACI-Virtual-Edge-Configuration-Guide-202_chapter_0100.html
https://aci-lab.ciscolive.com/lab/pod10/acivmm/vmm-build LACP Standby will give chance to the Leaf switches to initiate LACP BPDUs, Loadbalancing will be more variable to many destinations (More random flows).
We dont know if its a "normal VDS" or an "AVE". So maybe they want to point to the AVE due to (https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/aci_virtual_edge/configuration/2-x/Cisco-ACI-Virtual-Edge-Configuration-Guide-202/Cisco-ACI-Virtual-Edge-Configuration-Guide-202_chapter_0100.html) so because "For Cisco ACI Virtual Edge VXLAN mode, it is mandatory to use a load-balancing algorithm having a UDP port. We recommend the algorithm Source and Destination TCP/UDP Port." B and E should be correct
I think the anwsers are not complete. --> anwser should be LACP active / Src/Dst TCP/UDP Possible anwsers: SRC/DST MAC, SRC/DST IP, SRC/DST TCP/UDP and LACP active or passive
Cisco Application Centric Infrastructure Virtual Edge, VXLAN mode traffic always uses the source IP address as the TEP IP address. To ensure proper load balancing, we recommend the algorithm Source and Destination TCP/UDP Port. https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/aci_virtual_edge/configuration/2-x/Cisco-ACI-Virtual-Edge-Configuration-Guide-202/Cisco-ACI-Virtual-Edge-Configuration-Guide-202_chapter_0100.html
there is no mode of lacp standby in the APIC settings. LACP Mode: LACP Standby - is wrong! In the Mode field, choose one of the following options appropriate to your setup: Static Channel - Mode On LACP Active LACP Passive MAC Pinning MAC Pinning-Physical-NIC-load but the answer options clearly state - LACP Standby.
C, E as this is L2 traffic. See https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/2-x/L2_config/b_Cisco_APIC_Layer_2_Configuration_Guide/b_Cisco_APIC_Layer_2_Configuration_Guide_chapter_0100.html to explain the different load balancing methods for L2 and L3 port channels.