22 - IPv6 Routing Operation and Troubleshooting Flashcards
What command is used to configure a DHCP Relay Agent?
ipv6 dhcp relay destination
What global command is used to enable IPv6 routing?
ipv6 unicast-routing
What command is used to view the IPv6 routing table?
show ipv6 route
What command is used to view IPv6 neighbors
show ipv6 neighbors
What command is used to view IPv6 routers?
show ipv6 routers
What 4 items should be checked first when troubleshooting?
- unicast address
- subnet mask
- default router
- DNS servers
Which items does stateful DHCP provide?
- unicast address
- prefix length
- DNS servers
When using stateful DHCP how does a host learn its default gateway?
NDP
Which IPv6 multicast address does a host use when looking for DHCP?
FF02::1:2
When using stateless DHCP what does the DHCP server provide?
DNS addresses
When a host uses SLAAC what 4 pieces of information does it get and from where?
- default gateway using NDP
- IPv6 prefix using NDP from router
- prefix length (subnet) using NDP from router
- host address using random number or eui-64
- DNS server from stateless DHCP server
How does eui-64 configure an interface ID?
- splits MAC in half
- inserts FFFE
- inverts 7th bit of the first byte
Which 2 commands will enable IPv6 on a router?
- ipv6 unicast-routing (global)
- ipv6 address on an interface
What are 3 ways to configure a static route?
- direct packets out an interface
- direct packets to neighbors unicast address
- direct packets to neighbors link-local address along with the outbound interface
When troubleshooting a host issue what 3 items should match the default gateway?
- same subnet
- same prefix length
- default gateway address should match interface on router
