https://www.cisco.com/c/en/us/td/docs/ios/12_2sx/feature/guide/fsxeibmp.html#wp1037690
This is how I see this based on the mentioned article. In BGP we can set different options for load sharing, depending on the design. With MPLS, we can configure "maximum-path ibgp" or "maximum-path eibgp", where the feature [ibgp] performs multipath forwarding only in PE-PE ibgp MPLS domain, and the feature [eibgp] can use both PE-PE ibgp and PE-CE ebgp domains for multipath calculations. If "maximum-paths eibgp 2" is not offered then "maximum-paths ibgp" is OK for MPLS (PE-PE) scenarios. = Answer "C"
The answer is B
Step 8
maximum-paths [ bgp ] number-of-paths
Example:
switch(config-router-af)# maximum-paths 4
Configures the maximum number of multipaths allowed. Use the ibgp keyword to configure iBGP load balancing. The range is from 1 to 16.
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/93x/label-switching/b-cisco-nexus-9000-series-nx-os-label-switching-configuration-guide-93x/b-cisco-nexus-9000-series-nx-os-label-switching-configuration-guide-93x_chapter_0111.html#concept_ytr_tk3_rbb
answer is C: maximum-paths ibgp2. I explain now:
A: "multi-path" is not existant
B: maximum-paths 2 -> this is for address-family ipv4/ipv6
C: maximum-paths ibgp 2: this offers load balancing for this address-family --> address-family vpnv4
maxim-paths --> address-family ipv4/ipv6
maximum-paths ibgp/ebgp,eibgp --> address-family vpnv4/vpnv6
IOU2(config-router)#address-family ipv4 vrf red
IOU2(config-router-af)#
IOU2(config-router-af)#
IOU2(config-router-af)#ma
IOU2(config-router-af)#maximum-paths
IOU2(config-router-af)#maximum-paths
IOU2(config-router-af)#maximum-paths ?
<1-32> Number of paths
eibgp Both eBGP and iBGP paths as multipath
ibgp iBGP-multipath
IOU2(config-router-af)#maximum-paths
eibgp Both eBGP and iBGP paths as multipath
ibgp iBGP-multipath
however this eibgp and ibgp maximum-paths is still for MPLS. maximum-paths for mpls makes no sense. anser is C.
eBGP and iBGP Multipath Load Sharing Configuration Example
This following configuration example configures a router in IPv4 address-family mode to select two
BGP routes (eBGP or iBGP) as multipaths:
Device router bgp 40000
Deviceaddress-family ipv4 vrf RED
Devicemaximum-paths eibgp 2
Deviceend
This following configuration example configures a router in IPv6 address-family mode to select two
BGP routes (eBGP or iBGP) as multipaths:
Device router bgp 40000
Deviceaddress-family ipv6 vrf RED
Devicemaximum-paths eibgp 2
option corret is: C
https://www.cisco.com/c/en/us/td/docs/ios/12_2sx/feature/guide/fsxeibmp.html
The maximum-paths eibgp command used to configure Border Gateway Protocol (BGP) multipath load sharing in an Multiprotocol Label Switching (MPLS) virtual private network (VPN) using eBGP and iBGP routes. This feature is configured under a VPN routing and forwarding instance (VRF) in address family configuration mode. The number of multipaths is configured separately for each VRF. The number of paths that can be configured is determined by the version of Cisco IOS software
Summmary Steps from the article:
Configuring BGP Load Balancing for eBGP and iBGP
You can configure a Layer 3 VPN load balancing for an eBGP or iBGP network.
Prerequisites
Ensure that you are in the correct VDC (or use the switchto vdc command).
SUMMARY STEPS
1. configure terminal
2. feature- s et mpls
3. feature mpls l3vpn
4. feature bgp
5. router bgp as-number
6. (Optional) bestpath cost-community ignore
7. address-family { ipv4 | ipv6 } unicast
8. maximum-paths [ibgp] number-of-paths
9. (Optional) show running-config bgp
10. (Optional) copy running-config startup-config
Def. C. It's in this article from Cisco.
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/5_x/nx-os/mpls/configuration/guide/mpls_cg/mp_vpn_multipath.html
First of all, the correct answer is: maximum-paths eibgp 2 . But it's not here.
You have to choose between A and B. Since the iBGP(M-BGP) is deeper in the MPLS, I choose to C.
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