Refer to the exhibit. An IPv6 address must be obtained automatically on the LAN interface on R1. Which command must be implemented to accomplish the task?
Refer to the exhibit. An IPv6 address must be obtained automatically on the LAN interface on R1. Which command must be implemented to accomplish the task?
To automatically obtain an IPv6 address on the LAN interface on R1, you should use the 'ipv6 address dhcp' command. This command instructs R1 to request an IPv6 address from the DHCPv6 server present in the network. The 'ipv6 address autoconfig' command would rely on Stateless Address Autoconfiguration (SLAAC) and Router Advertisements (RAs), which may not be appropriate in a network with a DHCPv6 server. 'ipv6 address fe80::/10' is not suitable because it's a link-local address, and 'ipv6 address 2001:db8:d8d2:1008:4332:45:0570::/64' is a static address configuration, not an automatic one.
Just use ipv6 address autocontig guys, it's safer.
I think this is right
No; SLAAC relies on RA messages to function, but here we are configuring the IP address on a router interface, with no other routers on that interfaces network. From where will it receive the RA messages? Exactly; it won't. However, there is a DHCPv6 server on the network, and C and D are static configurations. So obviously, the answer must be B.
So as this brother said there is DHCPV6 server, but if there is DHCP server we have to use "IP address DHCP", option B, but if there is no DHCP server we use SLAAC. So the correct answer is I think "B"
"ipv6 address autoconfig": The interface should only obtain its configuration using RAs and the stateless address autoconfiguration (SLAAC). With ipv6 address autoconfig, a router will not attempt to contact DHCPv6. "ipv6 address dhcp": DHCPv6 does not have an option to advertise a default gateway, and the default gateway still has to be discovered through RAs. It will depend on DHCPv6 to discover its address and prefix, and on RAs to discover its gateway. So if the DHCPv6 is in the same LAN that the R1 LAN interface is the best option. B is the best correct answer https://community.cisco.com/t5/ipv6/ipv6-address-autoconfig-vs-ipv6-address-dhcp/td-p/2710597
it's says obtain, not auto generate. I go with B
sry ,but no in PT, I enter ipv6 address ? autoconfig Obtain address using autoconfiguration dhcp Obtain a ipv6 address using dhcp
I wanted to answer with A but then I saw there is a DHCP server, it's like implicitly telling me to use it and I think this is a scenario based question... so I'll go for B (why use autoconfig if there is a DHCP server?)
I believe its B for the exam, although in reality, like Dutch said, its safer/better: There are a few reasons why you might not want to use DHCP for IPv6 addresses. DHCP is a stateful protocol, which means that it requires a DHCP server to maintain a database of IP addresses and their corresponding lease information. This can be a burden on the DHCP server, especially in large networks. DHCP is not as secure as SLAAC. When a device uses DHCP, it sends its MAC address to the DHCP server, which can be used to track the device. DHCP can be more complex to configure than SLAAC.
Configuring the Stateless DHCPv6 Client SUMMARY STEPS 1. enable 2. configure terminal 3. interface type number 4. ipv6 address autoconfig [default] 5. end https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipaddr_dhcp/configuration/xe-16/dhcp-xe-16-book/ip6-dhcp-stateless-auto.html
B is correct
B and A might be correct, depending on the context. ¨A¨ doesn't need, a DHCP server cause it use SLAC; ¨B¨ requires a DHCP server. SW1 has a DHCP server connected to an interface.
I go with B
B is correct
B. is not a valid command. This is from the cisco site: Configuring the Stateless DHCPv6 Client SUMMARY STEPS 1. enable 2. configure terminal 3. interface type number 4. ipv6 address autoconfig [default] 5. end Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipaddr_dhcp/configuration/xe-16/dhcp-xe-16-book/ip6-dhcp-stateless-auto.html
It most certainly is valid command
Did anyone notice the spelling mistake in option-A. Autocon(t)ig instead of Autocon(f)ig
B is correct
Its b. There is a DHCP SERVER. Auto config can be used if there is no DHCP serv
The option C configures a link local IPv6 address (that ranges between FE80::10 and FEB0::10) which isn't correct because when you enable IPv6 on an interface then the device will automatically create a link-local address. The ipv6 address autoconfig command causes the device to perform IPv6 stateless address auto-configuration to discover prefixes on the link and then to add the EUI-64 based addresses to the interface.
A. ipv6 address autocontig
The dhcp server isn't in the same subnet than the wan interface of the router, so by default it can't receive configuration from the dhcp server. It should be A for me...
sorry it is for LAN so it should be B
depend if it is stateless or statefull dhcp server