kommunikatsiooniteenuste arendus (irt0080) · pdf filenodeb rnc all-ip serving gateway (sgw)...
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Infovood (voice – data)
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Standardimine ja tähistamine
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Cross Layer Design
• Wireless Networking – Architecture: Connection Vs
Connectionless
– Energy efficient analysis of manets
– Traffic theory & protocols
• Signal processing – Increasing the spectral efficiency
– Reducing Bit Error Rate
– Reducing transmission energy
• Information Theory – Developing capacity limits
– Designing efficient source coding and channel algorithms
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Break-before-Make
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Make-before-Break
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MSC Public
telephone
network
Gateway MSC
G
Mobility Management Entity(MME)
Legacy 2G/3G
Cellular Voice
evolved Packet Core Network Radio Access Networks (RANs)
SGW/MME Public
Internet
PGW
G
eNodeB
4G eUTRAN
HSS
RNC NodeB
All-IP
Serving Gateway (SGW)
PDN Gateway (PGW)
Home Subscriber Server (HSS)
Use
r E
qu
ipm
en
t (U
E)
7
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Manager – kasutaja (User)
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Halduspüramiid
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Customer Management
Service Management
Distributed system management
Network management
Element management
Business
Management
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Infovoogude
Mudel
Funktsioonide
Mudel
Võrguhaldus
Võrguhaldus
...ja Mudelid
Network Management
Organisatsiooni
Mudel
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Sidelabor 408 (K. 27.11.2013 10:45:50)
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Sidelaborist päring
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http://en.wikipedia.org/wiki/Sitting_on_the_dock_of_the_bay
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Monitooring
• Iga arvuti võtab vastu talle adresseeritud pakette
• Monitooringu tarkvara kasutav arvuti jälgib kõiki võrgus liikuvaid pakette
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Wireshark
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Wireshark võimaldab monitoorida kogu võrguliiklust,
palun vältige huvi “võõra” liikluse osas...
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Karistusseadustik
• § 206. Arvutiandmetesse sekkumine
• § 2061. Terminalseadme identifitseerimisvahendi
ebaseaduslik kõrvaldamine ja muutmine
• § 207. Arvutisüsteemi toimimise takistamine
• § 208. Nuhkvara, pahavara ja arvutiviiruse levitamine
• § 213. Arvutikelmus
• § 2161. Arvutikuriteo ettevalmistamine
• § 217. Arvutisüsteemi ebaseaduslik kasutamine
• § 2171. Ebaseaduslikult kõrvaldatud ja muudetud
identifitseerimisvahendiga terminalseadme kasutamine
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Infovood
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Võrguliikluse monitooring EEnet http://www.eenet.ee/EENet/magistraalvork
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Voogude jaotamine
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Bottleneck link
(10 Mbps)
UDP (#1) - 10 Mbps
TCP (#2)
TCP (#32)
.
.
.
UDP (#1)
TCP (#2)
TCP (#32)
.
.
.
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Halduseta liiklus
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Fair queuing
20
2
Flow 1
Flow 2
Flow n
I/P O/P
Variation: Weighted Fair Queuing (WFQ)
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Token Bucket Regulator (Shaper)
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Token Bucket
x(t) is the instantaneous sending rate,
ut
t
0t dt)t(xmaxub Max bits b(u)
Interval size u
Max burst rate
Slope= average rate
b(u)=r u +b
We want to allow some burstiness.
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Voogude ülekanne
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QoS Requirements
Voice Video Data
Delay
Packet Loss
BER
Data Rate
Traffic
<100ms - <100ms
<1% 0 <1%
10-3 10-6 10-6
8-32 Kbps 1-100 Mbps 1-20 Mbps
Continuous Bursty Continuous
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Teenused 25
Võrgusisene haldus
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Teenused 26
Võrguväline haldus
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Teenused 27
SNMP MANAGER
AGENTS
GET / SET
TRAP
MIB
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Teenused 28
Võrguhalduse mõisted
agent data
agent data
agent data
agent data
hallatav seade managed device
hallatav seade
hallatav seade
hallatav seade
haldav jaam
data
võrguhaldus- protokoll
network management
protocol
Hallatavad seadmed
sisaldavad hallatavaid objekte,
mille andmed
kogutakse haldusinfobaasi.
Management Information
Base (MIB)
haldav jaam managing entity
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Päringud ja teated
agent data
Managed device
managing entity
response
agent data
Managed device
managing entity
trap msg request
request/response mode trap mode
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Teenused 30
SNMP traffic data
SNMP Polls
SNMP Octets Counter
poller router poll
data
Like an Odometer
9 9 9 4 0 8
Management system
agent
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Teenused 31
Hallatavad objektid
• igale hallatavale objektile omistatakse objekti identifikaator (object identifier OID)
• OID määratakse MIB failis
• OID esitatakse kas punktiga eraldatud täisarvude või sõnade jadana:
Näide:
– 1.3.6.1.2.1.4.6.
– iso.org.dod.internet.mgmt.mib-2.ip.ipForwDatagrams
• Kui SNMP haldusjaam pärib mingit objekti, siis ta saadab selle objekti OID päringu sees SNMP agendile.
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Teenused 32
Haldusinfobaas MIB (Management Information Base)
iso(1)
org(3)
dod(6)
internet(1)
mgmt(2)
mib(1)
private(4)
enterprise(1)
oiw(14)
snmp(11)
system(1) hp(11)
3com(43)
wellfleet(18)
at(3)
interfaces(2)
rmon(16)
lanmanager(77)
snmpDot3RptrMgmt(22)
• baas on kõikidel haldussüsteemi komponentidel
• haldusinfo objekti aadressi moodustab numbrite järjestus – näiteks
snmpDot3RptMgmt objektide grupi aadress on 1.3.6.1.2.1.22
• SNMP päringutes kasutataksegi neid objektide aadresse
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Teenused 33
SNMP põhikäsud
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Infovahetus halduur -- agent
• SNMP manager and an SNMP agent communicate
using the SNMP protocol
– Generally: Manager sends queries and agent responds
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Teenused 35
SNMP päring ja SNMP vastus Simple Network Management Protocol version: version-1 (0) community: public data: get-next-request (1) get-next-request request-id: 262919552 error-status: noError (0) error-index: 0 variable-bindings: 14 items Item name: 1.3.6.1.2.1.2.2.1.10 (IF-MIB::ifInOctets) valueType: unSpecified (1) unSpecified Item name: 1.3.6.1.2.1.2.2.1.16 (IF-MIB::ifOutOctets) valueType: unSpecified (1) unSpecified Item name: 1.3.6.1.2.1.2.2.1.7 (IF-MIB::ifAdminStatus) valueType: unSpecified (1) unSpecified Item name: 1.3.6.1.2.1.2.2.1.8 (IF-MIB::ifOperStatus) valueType: unSpecified (1) unSpecified /…/
Simple Network Management Protocol version: version-1 (0) community: public data: get-response (2) get-response request-id: 262919552 error-status: noError (0) error-index: 0 variable-bindings: 14 items Item name: 1.3.6.1.2.1.2.2.1.10.1 (IF-MIB::ifInOctets.1) valueType: value (0) value: simple (4294967295) value: simple (4294967295) application-wide: counter-value (1) counter-value: 98900896 Item name: 1.3.6.1.2.1.2.2.1.16.1 (IF-MIB::ifOutOctets.1) valueType: value (0) value: simple (4294967295) value: simple (4294967295) application-wide: counter-value (1) counter-value: 7637411 Item name: 1.3.6.1.2.1.2.2.1.7.1 (IF-MIB::ifAdminStatus.1) valueType: value (0) value: simple (4294967295) simple: integer-value (0) Value: INTEGER: up(1) Item name: 1.3.6.1.2.1.2.2.1.8.1 (IF-MIB::ifOperStatus.1) valueType: value (0) value: simple (4294967295) simple: integer-value (0) Value: INTEGER: up(1) /…/
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Teenused 36
Haldustulemused
“Warning: HSRP Router down.
Standby now active…”