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SPNGN1

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safuya's version from 2016-01-04 12:41

RSTP / MISTP

Question Answer
10Mbps Cost2,000,000
100Mbps Cost200,000
1Gbps Cost20,000
2Gbps Cost10,000
10Gbps Cost2,000
Standards802.1w RSTP / 802.1s MISTP
memorize

OSPFv2/v3

Question Answer
RFCv2 RFC 2328 / v3 RFC 5340
IP Protocol89 in IPv6 and IPv4
All SPF routers multicast224.0.0.5 v2 // FF02::5 v3
All designated routers multicast224.0.0.6 v2 // FF02::6 v3
Adjacency StatesDown, Attempt, Init, 2-Way, ExStart, Exchange, Loading, Full
LSA Type 1Router/Device LSA. Intra Area Advertisement
LSA Type 2Network LSA. DR advertises routers joined in broadcast domain
LSA Type 5External/AS LSA. Routes from other ASs, usually other routing protocols
memorize

IS-IS

Question Answer
IS-IS RFCRFC 1195
ES-ISEnd System to Intermediate System
AFI1 octet. value 47. Authority and Format Identifier
ICD2 octets. value 00 05. International Code Designator
DFI1 octet. value xx. DSP Format Identifier
AA3 octets. value xx xx xx. Administrative Authority
RD2 octets. value contains AS. Routing Domain
Area2 octets. Assigned by AS owner
ID6 octets. Assigned by AS owner. Recommended use MAC address
SEL1 octet, NSAP selector
memorize

Section 5

Question Answer
BGP TCP Port179
BGP4 RFCRFC 4271 (originally RFC 1771)
StatesIdle, Connect, Active, OpenSent, OpenConfirm, Established
Message Type 1Open
Message Type 2Update
Message Type 3Notification
Message Type 4KeepAlive
Message Type 5Route-Refresh
memorize

802.1d STP

Question Answer
Default BPDU timer2 seconds
Spanning Tree StatusListening, Learning, Forwarding, Blocking
CST rolesRoot, Designated, Alternate
10Mbps Cost100
100Mbps Cost19
1Gbps Cost4
2Gbps Cost3
10Gbps Cost2
memorize