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What is a qualified next-hop? - Answer✅✅It is the static configuration of a second
route to the same destination, but it has a higher Preference. It will become active if
the primary route fails. operator on the static route is 'qualified-next-hop'
Does the next-hop preference select higher or lower numbers - Answer✅✅Lower
What does the static route option "as-path" do? - Answer✅✅used to redistribute a
static route into bgp and wants to keep the info
What does the static route option "colors" do? - Answer✅✅Used for traffic
engineering
What does the static route option "community" do? - Answer✅✅Used for BGP
community information
What does the static route option "no-readvertise" do? - Answer✅✅Will not
distribute the route into any routing protocol
What does the static route option "passive" do? - Answer✅✅Does not show up in
routing tables
,What does the static route option "preference" do? - Answer✅✅Default of 5, can
be changed
When would you use an aggregated route? - Answer✅✅when you don't want to
advertise every address, just the networks
How do you configure an aggregated route? - Answer✅✅set routing options
aggregate route 10.10.10.10/30
what is the default aggregated route preference? - Answer✅✅130
What are martian Routes? - Answer✅✅Routes that juniper doesn't want in the
routing table
What kind of addresses are disallowed? - Answer✅✅Loobpacks, class e, multi-cast,
224, 0.0.0.0/8, 127, 191, 192, 223, 240
What is Filter Based forwarding? - Answer✅✅Controlling routed and forwarded
traffic with firewall filters
What configuration hierarchy will you configure FIB? - Answer✅✅edit firewall
family inet
What are the steps to configure a firewall policy? - Answer✅✅edit firewall family
inet, set routing-instances NAME instance-type forwarding routing options static
route 0.0.0.0/0 next hop (desired interface), set interface ge-0/0/0 unit 0 family inet
filter input NAME
What is a purpose of a routing instance? - Answer✅✅allow you to completely
separate traffic by creating a separate instance and assigning interfaces to that
instance, also allows you to use the same IP addresses on different interfaces
What is the "forwarding" routing instance used for? - Answer✅✅Used for Filter
Based Forwarding
What is the "No-Forwarding" routing instance used for? - Answer✅✅Used to
separate large networks into smaller administrative entities
What is the "L2VPN" routing instance used for? - Answer✅✅Enables l2vpn on the
interface
What is the "virtual router" routing instance used for? - Answer✅✅Creates a virtual
router for L3 traffic - not a vpn
What is the "VPLS" routing instance used for? - Answer✅✅Virtual Private Lan
Service: Point to Multipoint
, What is the basic command to create a virtual router - Answer✅✅set routing
instances INSTANCE-NAME instance-type (virtual router)
What is the basic command to add an interface to a virtual router - Answer✅✅set
routing instances INSTANCE-NAME interface
What is the purpose of RIB Groups? - Answer✅✅Allows routing protocols to install
certain routes/prefixes to other routing tables
What is the basic syntax for creating a rib group? - Answer✅✅set routing options
rib-groups NAME import-rib [IMPORTFROM. 0 IMPORTTO.0] .or. set protocols ospf
rib-group NAME
What type of routing protocol is OSPF? - Answer✅✅IGP - link-state. This means
they have the same database as their neighbors.
How many routers can you have in one OSPF area? - Answer✅✅50
What is the multicast address for ospf routers? - Answer✅✅224.0.0.5
What is the multicast address for OSPF Designated Routers? - Answer✅✅224.0.0.6
What protocol does ospf use? - Answer✅✅IP Protocol 89 (no tcp/udp)
Step one of OSPF Process: - Answer✅✅R1 send hellos to broadcast (224.0.0.5)
Step two of OSPF Process: - Answer✅✅R2 will reply from it's own IP address to R1
Step three of OSPF Process: - Answer✅✅R2 will send LSR to R1
Step four of OSPF Process - Answer✅✅R1 will send the Link State Update
Describe OSPF Metrics - Answer✅✅OSPF doesn't. know the difference between
100m and 1g interface. To give priority, you must change the reference point or the
metric
What is IS-IS? - Answer✅✅Intermediate System to Intermediate System
What? - Answer✅✅Whaaaat?
What is IS-IS router Type Level 1? - Answer✅✅Intra-area router, only prefixis from
it's own area. L1 Link-state database and spf tree
What is IS-IS router type Level 2? - Answer✅✅Backbone router that knows all intra
and inter-area routes
, What is IS-IS router type Level 1-2 - Answer✅✅router that performs both roles -
separate L1 and L2 LSDB
What is a Link-State PDU - LSP in ISIS? - Answer✅✅Contains actual rout information
What is CSNP? - Answer✅✅Complete Sequence Number PDUs. Complete list of
LSPs in LSDB. Sends every 10 seconds
What is PSNP? - Answer✅✅Partial Sequence Number PDUs. Analogous to OSPF
LSRequest and LSAck.
What type of addresses do IS Routers use? - Answer✅✅NET: Network Entity Title
What family type is ISIS in a juniper router? - Answer✅✅iso
What does a NET Consist of? - Answer✅✅Area-ID = always begins with 49, SID =
always 3 sets of 4 after the NSEL, NSEL Selector always 00
What is the default priority of ISIS? - Answer✅✅64 - can be changed from 0-127
What is a TLV? - Answer✅✅Type Link Value
How many TLV's are there - Answer✅✅Hundreds
What is a benefit of ISIS over OSPF? - Answer✅✅Information for traffic engineering
(such as bandwidth can be carried automatically in a TLV.
What is the default type of an ISIS Router - Answer✅✅Level 1/2
What is the level 1 preference of ISIS? - Answer✅✅15
What is the level 2 route preference of ISIS? - Answer✅✅18
What is BFD? - Answer✅✅"Bidirectional Forwarding Detection. A feature that
sends ""Hellos"" back and forth with a neighbor at a very small interval in order to
detect down links faster than routing protocols could and with less overhead.
Configured under the interface or under the routing protocol."
How do you configure BFD? - Answer✅✅set protocols isis interface ge-0/0/0.0
family inet bfd-liveness-detection minimum-interval 900 multiplier 3
What port does BGP use to connect? - Answer✅✅TCP 179
What is the default metric value for BGP? - Answer✅✅=1 (Metric value. Range is
from 0 through 65535. The default metric value is 1.)
What level is the MED in BGP? - Answer✅✅6