I leave in a few minutes to take the CATM 2.1 test. I have been studying
mostly material from the official CATM 2.1 class, cisco.com, and the boson
tests. I have assembled information into study notes that I felt would
help me.
WARNING: This is FAR from complete. I only put down information I felt
could be bulleted easily. I didn't put anything down about LANE 1/2,
MPOA, SSRP, and tons of other stuff. Don't think this is some blueprint
to the test, read it and try to take it, because you will fail :).
However if you are studying for CATM 2.1, you may find some of this
helpfull to glance at. Lots of acronyms in CATM 2.1.
If anyone has any study notes for CVOICE or MCNS please email them to me,
I am taking MCNS in a few days, and CVOICE in about 2 weeks.
Brian
ATM Interface Types specified by ATM Forum
==========================================
100-Mbps 4B/5B over MMF TAXI
155-Mbps OC-3c over MMF SONET
155-Mbps OC-3c over SMF SONET
45-Mbps DS3 over coax
34-Mbps E3 over coax
155-Mbps 8B/10B over MMF
155-Mbps 8B/10B over SMF
25-Mbps over UTP
1.544-Mbps T1 (Over TP)
2.048-Mbps E1 (Over TP and Coax)
nxT1 IMA (Over TP)
nxE1 IMA (Over TP and coax)
155-Mbps STS-3c over UTP-5
622-Mbps OC-12c over SMF SONET
51.84-Mbps STS-1 over UTP-3
2.5-Gbps OC-48 over SMF SONET
Well Known VPI/VCI's
====================
Signaling x/5 0/5
ILMI x/16 0/16
LECS x/17 0/17
PNNI x/18 0/18
Traffic Parameters
==================
PCR Peak Cell Rate
SCR Sustainable Cell Rate
MBS Maximum Burst Size
MCR Minimum Cell Rate (ABR Only)
QoS Parameters
==============
MCTD Maximum Cell Transfer Delay
CDVT Cell Delay Variation Tolerance
CLR Cell Loss Ratio
Traffic Classifications - Service Categories
(Traffic Parameters Used)
============================================
CBR Constant Bit Rate (PCR)
VBR-RT Variable Bit Rate Real Time (PCR, SCR, MBS)
VBR-NRT Variable Bit Rate Non Real Time (PCR, SCR, MBS)
UBR Unspecified Bit Rate (None)
ABR Available Bit Rate (PCR, MCR)
ATM Adaptation Layers
=====================
AAL1 CBR Connection-Oriented
AAL2 VBR Connection-Oriented
AAL3/4 UBR Connectionless
AAL5 ABR Connection-Oriented
UBR
VBR
CBR
ATM Signalling is based on ITU -T Q.2931
UNI 4.0
=======
Multicast support (Leaf initiated joins (LIJ, Anycast addressing)
Signaling of individule QoS paramters
ABR signaling
Proxy siganling
Virtual UNI
Soft PVC's are established MANUALLY across UNI
DYNAMICALLY across NNI
UNI Connection Types
====================
Point to Point Unidirectional
Bidirectional
Point to Multipoint Unidirectional
ATM Adressing Formats
=====================
ICD has AFI of 47
DCC has AFI of 39
E.164 has AFI of 45
RFC1483 encapsulation types
===========================
aal5mux VC Multiplexing Single protocol per VC
aal5snap LLC/SNAP encapsulation Multiprotocols over VC
VC multiplexing is also known as "null encapsulation"
ATM Router Interfaces
=====================
NPM Cisco 4500/4700
AIM Cisco 7000
CES-PA Cisco 7200
AIM
Physical Layer Interface Modules (PLIMs)
=========================================
155-Mbps STS-3c SONET/SDH MMF
connectors: one duplex SC or two simplex SC
155-Mbps STS-3c SONET/SDH SMF
connectors: ST2
100-Mbps TAXI 4B/5B MMF
connectors: MIC
34-Mbps E3/45Mbps DS-3
connectors: 75ohm RG-59 Coax
AAL encapsulation types
=======================
aal5snap
aal5mux
aal5nlpid
aal34smds
qsaal
ilmi
Max-bandwidth for all AIP's total: 200Mbps
Default MTU: 4470
Max VC's: 2048
RFC1483 Multiprotocol Support: IP, IPX, DECnet,
Appletalk, CLNS,
XNS, VINES
Rate Queues: 8 (4 low, 4 high)
AIP MIBs: LEC, RFC1695 AToM, RFC1407 DS3,
RFC1595 SONET/SDH, ATM ILMI
NPM
One per 4500/4700
Max VC's: 1024
OC-3, STS-3c/STM-1, DS-3, E3 Physical Interfaces
Rate-Queues: 4
RFC1483 Multiprotocol Support: IP, IPX, DECnet,
Appletalk, CLNS,
XNS, VINES
CES-PA
CES interfaces: 4xT1, 4xE1 (structured or unstructured)
Trunk interfaces: OC-3 (SM), DS3, E3
Clocking from: SRTS, Adaptive
Max VC's: Over 2000
Max VP's: 64
Traffic Shaping per VC or VP
Managed via: IOS CLI, Web, CiscoView
LS1010
======
ASP can be installed in slot 13 of a Cat 5500
can be installed in slot 2 of a LS1010
5Gbps switch fabric
Same chassis as Cat 5000
4 Carrier Modules, each holds 2 Port Adapter Modules
each can do 1.2Gbps
8 Port Adapter Modules max
Up to 622Mbps per port adapter
ASP - up to 64MB DRAM (16MB Standard)
up to 16MB Flash (8MB Standard)
Feature Card - a daughter card that goes inside the ASP
Allows for Intelligent packet discard (TPD/EPD)
CLP selective discard, Per-flow queueing, traffic
policing, ABR flow control
65,636 cells of buffering on the LS1010
DS3 Card
Traffic pacing
Clocking from self timing, loop, or a master port
LS1010 can support 32 155Mbps ports
8 622Mbps ports
96 25.6Mbps ports
25.6Mbps interface
VP tunneling not supported
VPI is limited to 2 bits (0 - 3)
No traffic pacing
CE T1/E1
AAL1
Unstructured and structured CBR
32 T1/E1
Clocking via adaptive, srts, synchronous timing for CBR, global
network clock synchronization
LS1010 can do up to 32000 point to point VCCs or VPCs
1985 point to multipoint
LS1010 Traffic Managment
========================
Buffering
Priority classes
QoS Routing
Traffic policing
Traffic shaping
Intelligent packet discard
ABR
Hardware implementation with upgrade path
Traffic managment during setup
traffic parameters
QoS parameters
Connection admission control (CAC)
QoS routing (PNNI)
Traffic managment during data flow
traffic policing
traffic shaping
priority control
buffer managment
congestion control
LS1010 Traffic Parameters
=========================
PCR Peak Cell Rate
SCR Sustainable Cell Rate
BT Burst Tolerance
MCR Minimum Cell Rate
CDVT Cell delay variation tolerance
LS1010 uses Dual-Mode Leaky Bucket Algorithm for enforcing
traffic contracts
LS1010 QoS Parameters
=====================
MaxCTD Maximum Cell Transfer Delay
CDV Cell Delay Variation
CLR Cell Loss Ratio
MeanCTD Mean Cell Transfer Delay
CER Cell Error Rate
CMR Cell Misinsertion Rate
SECBR Severely Errored Cell Block Ratio
-----------------------------------------------
Brian Feeny, CCNP, CCDP [EMAIL PROTECTED]
Network Administrator
ShreveNet Inc. (ASN 11881)
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