lecture4PSI Flashcards
Reasons for traffic separation
▶Clarity (only what belongs together is combined)
▶ Safety (traffic only goes where it belongs)
▶ Efficiency (network traffic does not mix)
▶ Simplicity (easier management)
What is an automatic configuration in IPv6?
Automatic configuration = a method whose purpose is to obtain an individual global IPv6
address and other parameters that will allow the station to communicate within the local
network and the Internet
Can the address 0000:0000:0000:0000:0000:0000:0000:0000 be shortened to ::::?
Yes
Hybrid VLAN network
A network that contains both marked and unmarked
traffic (on the trunk port as well as on the access ports)
In what order sre extension headers placed?
Behind each other
Where is the IPv6 packet size determined?
It is determined by the source station
Does the basic header always exist in IPv6 packet?
Yes
What is an extension header?
A structure that contains specific information used to deliver a
specific packet
How do we replace broadcast in IPv6?
It is replaced by specific multicast addresses
Where do we insert VLAN identifier in the Ethernet frame?
After the MAC address
What is global identifier in IPv6?
Global Identifier = a sequence of 40 bits that identifies a specific local network
Why the header length is ommited in IPv6 header?
Because it is fixed now
What is an inverse neighbor discovery?
The method can derive the corresponding IPv6 address for a known link address of a
specific interface
Selected principles and technologies for IPv6
Data routing: The method by which a station with an IPv6 address delivers data to the
destination station.
DHCPv6: An alternative to stateless configuration, similar to DHCP for IPv4.
Inverse neighbor discovery: Finding an IPv6 address to the corresponding MAC address
by the interface on which the IPv6 address is set.
IPv6 to IPv4 transition mechanism: For the reachability of addresses of a station in
IPv4 networks by stations in IPv6 networks.
TEREDO: Designed to use IPv6 in a local network that does not support IPv6. The
implementation of this technology under MS-Windows is called MIREDO.
Mobility with IPv6: A way to ensure that a particular
MPLS network
Label Edge Router(LER) attaches label to
packet when it enters MPLS network
inside the MPLS network, packets are
forwarded according labels by Label
Switch Routers(LSRs)
when packet exits the MPLS network, the
edge router removes the label
Name the fields that are kept in IPv6 header from IPv4 header
Version, Source address, Destination address