BSCI
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- Which multicast address does RIPv2 use for its updates?
- 224.0.0.9
- Does VLSM support IPv6?
- No
- Which EIGRP table is similar to OSPF’s Link State Adjacency table?
- Neighbor table
- What are the three ‘reliable packets’ in EIGRP?
- reply, query and update.
- How often does EIGRP send hello packets on high bandwidth links?
- Every 5 seconds
- How often does EIGRP send hello packets on low bandwidth links?
- Every 60 seconds
-
True or False
Discontiguous subnets are supported by EIGRP? - True
- What causes a router to become stuck in active mode?
-
The neighboring router's reply packets are not received.
This could be caused by a router with high cpu or memory utilization. - Which EIGRP packets are considered unreliable packets since they do not require explicit acknowledgements?
- Hello and Ack
- Is it possible for two routers to become EIGRP neighbors even though the hello and hold timers don't match?
- Yes
- What do the private NSAP addresses have an AFI begin with?
- 39, 45, and 47
- Which two types of IS-IS routers provide intra-area routing?
- L1 IS and L1/L2 IS routers provide intra-area routing services.
- What must an administrator connect each IS-IS area to?
- A Level 2 backbone.
-
what area number is assigned to an
IS-IS backbone. -
There is no backbone area number.IS-IS backbone routers can reside in any area. There merely must be an
unbroken chain of Level 2 or Level 1/2 routers in order for the backbone to function. -
You have just purchased a Cisco router, and have configured the outgoing interface with IS-IS. What
metric does that interface use? - The default metric used on Cisco IOS for IS-IS is the default (cost) metric and not delay.
- What are the two IS-IS databases?
- Link-State and Forwarding
- What is the default hello and hold down timer for IS-IS?
-
10 seconds for Hello
30 Seconds for Hold down - What is the command to view the Level 1 and 2 routes in IS-IS?
- show clns route
- What is the command to show level 1 routes in IS-IS?
- show isis route
- Enter the command to enable IS-IS on an interface
- ip router isis
- Enter the command to enable IS-IS on a router
- router isis
- How do you change an IS-IS router from the default L1/L2?
-
router(config-router)is-type
[level-1|level-1-2|Level-2-only] - How do you change a single interface on an IS-IS router to a particular L type?
- (config-if)isis circuit-type [level-1|level-1-2|level-2-only]
- In which mode on a router do you configure the IS-IS metric
-
In interface mode
(config-if)isis metric - What command is used to summarize in IS-IS?
-
(config-router)summary-address
10.3.2.0 255.255.255.0 - What two modes does IS-IS run in?
- Point-to-Point and Broadcast
- Which EIGRP table contains the feasible successor?
- Topology Table
- How often are hello packets sent out on a slow WAN link?
- 30 seconds
- This is how far the router believes the destination to be?
- Feasible distance
- This is how far a router's neighbor thinks that the destination is for the router
- Advertised distance
- What are the default K-values in EIGRP?
-
K1=1, K2=0, K3=1, K4=0, k5=0
K1=bandwidth, K3=delay - Does EIGRP use split horizon?
- yes
- What is the default hello and hold time of EIGRP?
-
5 seconds for hello
15 seconds for hold time - What is the default hold time on an EIGRP slow link
- 180 seconds
- What would the command be to set the EIGRP bandwidth to use 100%
- ip bandwidth-percent eigrp 1 200
- What is the protocol ID for EIGRP and OSPF
- 88 and 89
- describe what an OSPF Router is doing in the init state?
- It is awaiting a reply after it sends out its hello
- What happens during the two-way state?
- Once the router sees its own router ID in the list of neighbors, a neighbor relationship has been established and the router enters this state.
- What are the four stages a router goes through when exchanging info with a neighbor?
-
exstart
exchange
loading
full - What happens during the exstart state?
- This is when the DR is elected
- What happens during the exchange state?
- the DR sends out DDP's (database desc packets)
- Describe the loading state?
- A router is awaiting the LSU's from its neighbors after having issued an LSR for more info.
- All neighborsa are fully adjacent and databases are synchronized during this OSPF state
- Full-state
- How many routers per OSPF area does Cisco recommend?
- 50
- What does an O E2 in a routing table indicate?
- This is a router advertised by way of an external LSA
- What are the Well Known, mandatory BGP attributes?
- origin, as-path, next hop
- What are the well known, discretionary BGP attributes?
-
local preference
atomic aggregate - What are the optional transitive (partial) BGP attributes?
-
aggregator
community - What are the optional, non-transitive BGP attributes?
- MED (multi exit discriminator)
- What BGP type is AS-Path?
- Type 2
- What BGP type is Next hop?
- Type 3
- What BGP type is origin
- Type 1
- What is a Type 4 attribute?
- MED
- What is a Type 5 attribute?
- local preference
- What is a Type 6 attribute?
- atomic aggregate
- What is a Type 7 attribute?
- aggregator
- What is a Type 8 attribute?
- community