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CCNP BSCI 642-901 1 (9)

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24/11/08 PA1

Cisco BSCI - Building Scalable Cisco Internetworks

1 EIGRP............................................................................................................................12 OSPF............................................................................................................................. 2

3 BGP 44 Implement Multicast Forwarding.....................................................................................45 IPv6 66 Redistribution.................................................................................................................67 IS-IS 7

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24/11/08 PA1

show ip protocol display the parameters and current state of the active routing protocol processdisplay parameters such as filters, default metric, maximum paths, and number ofarea configured on a router

show ip ospf show when topological database will be purged of out-of-date

number of times SPF algorithm has been executed

Type 1 Router link LSAType 2 Network link LSAType 3 (ABR) Network summary link LSA

Summary of IP subnets in an OSPF areaType 5 ASBR

router-id to set OSFP router id, else highest Loopback IP is the router id, if not is the highest interface IPis the router id

Default OSPF router priority is 1.If priority changed to 0, the state would always be DROTHER

Priority 2 is higher than priority 1

Ethernet LAN need a DR and BDR

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3 BGP

show ip bgp summary Displays the IBGP and EBGP neighbors that are configured

Mandatory BGP update messages origin

next hopS ( )

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RIPv2 224.0.0.9

EIGRP 224.0.0.10

PIMv2 224.0.0.13

IGMP version 3 224.0.0.22 - source filtering

NTP reserved by IANA 224.0.1.1

Multicast address range 224.0.0.0 -239.255.255.255Multicast prefix 01-00-5E

Protocol Independent Multicast PIM

Multicast mode

Dense mode1. An employee at a corporation listening to presidents report2. Used flood and prune mechanism3. Use a push model to floor traffic throughout the network and then prunes the unwanted4. The (S,G) state exists in every router, regardless of the presence of an RPF interface

Sparse Mode1. An employee sign up a particular distance-learning course2. Use pull model to send multicast traffic to where it is requested3 Wh b t id l di d

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Limited/Administratively scoped addresses are addresses 239.0.0.0 239.255.255.255, and arereserved for use inside private domains.

5 IPv6

IPv6 address is 128 bits longIPv6 header contains the next header fieldIPv6 router send RA messages

ipv6 unicast-routing command to support IPv6

RA router advertisementRS router solicitation

The router advertisement (RA) immediately after the host sends a router solicitation (RS)

001 global or aggregateable global addressesFEC0 site local addressFE80 link local addresFF multicastFF02::1 All nodes on link (link-local scope)FF02::2 All routers on link (link-local scope)FF02::6 all designated routers on the link-local scope6to4 t nneling prefi 2002

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BGP OSPF OSPF assigned a default metric of 20 for routes from all protocol, except BGP, whichgets a metric of 1

Route distribution OSPF Default metric is 20Default metric type is 2Subnets do not redistribute by default

EIGRP OSPF metric 25 (the seed cost)

Guide line from loop if two way distribution is necessary

Manually configuring the metric

Manually configuring the administrative distance

Using distribution access-lists

Route map default

The default sequence number will be 10 Any matches are considered to be permitted

Three reasons to control routing updates

To hide certain networks from the rest of the organization

To control network overhead on the wire

For simple security

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IS-IS OSPF EIGRP RIP BGP IGRP

Dijkstra Dual Bellman-Ford

Metric used Default (Cisco)DelayExpenseError

Cost 115 110 90EIGRP Summary 5

120 20 (External)200 (Internal)

100

Redistributedefult interfacemetric

10 20 1

Summary Route ip summary-addresseigrp as-number

address mask

network192.168.12.0 mask

255.255.252.0OSPF algorithmexcuted

Purged out-of-date

show ip ospf

Displayadjacencies

show clns neighbour show ip ospfinterface

show ip ospf

neighbors

show ip eigrpneighbors

show ip bugsummary

Lists all knownIS-IS router

show isis topology

Display Level-1routing table

show isis route

Interfaceconfigurationmode

ip router isis