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2960
6500/7600 Chassis, Line Cards & Troubleshooting
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ASR9000 NP Packet Counter Capture
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ASR9000 Series Hardware Overview
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IOS-XR Hardware and Diagnostics
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ASR9006 5.1.3 Service Pack Install Example
ASR9006 Upgrade 5.1.2 [default] to 5.1.3 [default] Example
IOS-XR Downgrade
IOS-XR Enabling Optional Packages
RSP440-TR Disk Mirroring
Cable Test
Cisco Switch Matrix
CSR1000v
CSR1000v Initial Install
CSR1000v Troubleshooting
HWIC-16A Terminal Server
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ME3600/ME3800
ME3600/ME3800 - Hardware & Software
ME3600/ME3800 - Hardware Troubleshooting
Packet Order Processing
TTCP Testing
IGP, BFD, ECMP/LAG
ASR9000 Load-Balancing
BFD
IGP/LDP/BGP Convergence Tuning (IOS/IOS-XE)
LAG, ECMP, MPLS-TE: Tech Overview
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DHCP Inside VRF
DHCP Option 82
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IP SLA, Track Objects, PBR
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Basic dynamic to static routing failover (BGP to Track Objects)
Force route destination via different path
IP SLA PSN Example
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Track OSPF Route Metric
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EFP Examples & Limitations
L2 Bridging (IRB)
L2 Port Protection Options
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STP: Mixing PortFast, BPDU Gaurd and BPDU Filter
MPLS L2 VPNs
6500/7600 MUX UNI
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L2 VFI Examples
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MPLS over PHY vs EFF+BDI/SVI
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PWE3 IOS & XR to Junos
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VPLS Flat Manual Examples
VPLS Flat Manual Triangle
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VPLS H-VPLS Auto Discovery Example
VPLS IOS-XR to Junos
MPLS L3 VPNs
6PE Interop (IOS/IOS-XR/Junos)
CSC (Squashed) with LDP
CSC (Squashed) with MP-BGP
Inter-AS MPLS OptionAB
Inter-AS MPLS OptionB - MPLS Label Usage
Inter-AS MPLS OptionB - Route Retention (IOS & IOS-XR)
Inter-AS MPLS Option B - RT Regex Filter
MPLS Label Allocation Mode (Cisco and Juniper)
Per Flow Load-Balancing Without FAT
Route Distinguisher Significance
VASI Inter-VPN Routing
VRF & L3VPN Packet Leaking
VRF Basic Route Leaking
MPLS-TE
Explicit Path (IOS)
Explicit Path for VRF (IOS)
Explicit Path for Pseudowires (IOS-XR)
Explicit Path for Pseudowires (IOS)
Multicast
PIM-SM (ASM and SSM) in GRT
NAT
PPPoE/PPPoA/xDSL/FTTx
ADSL2/2+ PPP over L2TP Process Cycle
ASR1000 LNS Config
Basic PPPoA ADSL1/2+
Basic PPPoE via PPPoA modem
DynDNS Updates
GRE over IPSEC over DSL
L2TP Tuning
L2TP Tunnel Establishment
LAC L2TP Forwarding (Static & Dynamic)
LAC wholesale PPPoA/E L2TP tunnelling with FreeRADIUS 2
LNS L2TP termination of PPPoE sessions with FreeRADIUS 2
MLPPP over ADSL
Multi VRF over ADSL using GRE
Multi-VRF over ADSL using GRE and IPSEC
Multi VRF over ADSL using GRE (Internet/GRT Access)
Multilink PPPoE
PPP Session Establishment
QoS/MQC
6500/7600
6500/7600 100Mbps Police
6500/7600 QoS on LAN Cards (WS-X67xx & RSP720-3CXL)
6500/7600 QoS on LAN Cards (WS-X69xx & SUP2T)
6500/7600 QoS Troubleshooting
ASR9000 QoS and LAG QoS
CPE Hierarchical QoS Framework (over DSL)
DSL over L2TP Basic Shaper
LNS Shaping & LLQ (ASR1000 series)
ME3600X/ME3800X
ME3600X/ME3800X Buffer Oversubscription
ME3600X/ME3800X EVC QinQ Shaping
ME3600X/ME3800X Bandwidth, Policer & Shaper Oversubscription
Nexus 7000 with F Cards
Policers
Police traffic by IP
Rate Limit Interface
Queuing, Scheduling, Congestion Avoidance/Management
Shapers
Shape Traffic Towards CPE
Shape Traffic Towards Gateway
Shape Upload & Download on CPE
Security/Filtering/Reporting
7600 NetFlow
BCP38 and Access Layer Filtering
CoPP & CPU Protection (IOS on 7600)
Embedded Packet Capture (EPC)
Layer 2 Port Protection Options
Mini Protocol Analyzer (MPA)
Securing IOS/IOS-XE Devices
Securing IOS-XR Devices
Segment Routing
ISIS Basic Multi-Topology
TCL Script & EEM
EEM to repeatedly watch tracker state
rand() with ios_config
Repeat Command X Times
TCP/SSH/VTY Sessions
TCP Session Dropping
VPNs/Tunnels
Aggressive Mode IPSEC
Basic IPSEC Tunnel
Basic L2TPv3 config with L2 loop
GREoIPSECoGRE
L2TPv3 Port-Based Xconnect
L2TPv3 RPW
MST over L2TPv3
Hardware
Encoding Schemes
Forwarding Hardware
Switches
PHY, MII and MAC
Internet Experiances
A year on 2g-3g-4g
Email Signatures
Internetworking
Home/SoHo CPEs
UK Grid Covers
xDSL
ADSL2/2+ PPP over L2TP Process Cycle
Conversation on contention ratios
DSL Frequency Graph
Juniper
BGP
ASN Filtering
Bi/Multi-Lateral Peering Example
Inter-AS MPLT Option B - AS Loops
Inter-AS MPLS OptionB Example
RTBH
Layer 2
Layer 2 Edge Port Protection
Hardware & Software
Junos
Junos Routing Tables
MX Series
MX Series Forwarding Hardware
MX Series LU-chip Overview
Network Services
Packet Capture
Junos tcpdump
vMX
Logical Systems on vMX
IGP
ISIS Basics
MPLS L3 VPNs
6PE Interop (IOS/IOS-XR/Junos)
Inter-AS MPLS OptionA Example
Inter-AS MPLS OptionB Example
L3VPN PE Example
MPLS Label Allocation Mode (Cisco and Juniper)
SRX240 PE Minimum Config
MPLS L2 VPNs
PWE3 Junos to IOS
VPLS with IRB
MPLS-TE
L2Circuit to Static LSP
Multicast
Rosen Draft 7
SLAX
99 Bottles
Monitoring
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Cacti/Nagios/Observium/RRD/SNMP
95th Percentile Accuracy with RRDTools
95th Percentile Calculation
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Cacti Template: EM40 PDU Template
Cacti Variables
Example OIDs and commands for hardware monioring
Feed from BASH, snmpget v2c & v3
Feed from BASH, wget/HTTP
RRDTool 95th for Joint In & Out
RRDTool Join 95th Tests
RRDTool 95th for Separate In & Out
RRDTool Missing Values
RRDTool Total Bandwidth In & Out
RRDTool Traffic Drop Alert
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SNMP with APC PDU
Capacity Planning
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Data Network Calculators
Linux Host Interface Throughput
Light (Optics) Calculators
LNS User Search
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Multiple IP Pinger
Ping Scripts
RANCID Filter
Sysgrep (Syslog Alerting)
RADIUS
Cisco AVPairs
FreeRADIUS - ADSL User Templates
FreeRADIUS PostreSQL
LAC wholesale PPPoA/E L2TP tunnelling with FreeRADIUS 2
LNS L2TP termination of PPPoE sessions with FreeRADIUS 2
Software
Tree/Trie IP and Forwarding Lookups
Standards/Protocols/Docs
Autonegotiation & MDIX
BGP-ORR
Interop MTUs
MPLS Label Distribution
Multicast Recap
Pseudowires (PWE3)
Pseudowires (PWE3) - Cisco
The DSL Reference
Zhone
DSLAM/MALC - Adding Line Cards
DSLAM/MALC - ADSL Provisioning (PPPoE Tunneling)
DSLAM/MALC - EFM Bonds with QinQ
DSLAM/MALC - Rate Limiting
ETHX EFM Modems
Programming/Scripting
Android
Andmote
Audio Streamer
Future Radio App
The Fat Controller
Arduino
4x4 Keypad
4x4 Keypad I2C 8bit IO Expander
Bhone - Part 1
Floppy Tones - Attempt 1
Floppy Tones - Attempt 2
Floppy Tones - Attempt 3 - Two Shift Registers and Two Drives
Floppy Tones - Part 4 - H-Bridge CD ROM Drive
GSM
AT Commands - Generic
AT Commands - Telit GE863 Specific
Memory Game
Music Toy
SD Card Basics
Secret Agent Laser Challenge - Part 1
Shift Register Hello World
AppleScript
Mount AD Folders
Scheduling AppleScript
TimeMachine Automation
Assembly
Compile C to Readable ASM
Box-256
Box 256 - Hello World
Box-256 - BIG SQUARE II
Box-256 - CHECKERBOARD
Preprocessor, Compiler, Assembler, Linker, Loader
Bash Scripting
Backup Github
Backups: Grandfather-father-son
Curl Backup with Login Example
Email Example: File Server Stats
Monthly Rsync Backup Example
Rsync Backup Window
Rsync with Notification
Split MP3 by Seconds
Stuck In Time
Try Example
Web Backup Scripts
BF
DFTBA
My Name
C & C++
CPU Cache Overview
DPDK Notes
Etherate
Etherate Examples and Use Cases
Etherate FAQs
Etherate Features
Etherate Notes
EtherateMT
EtherateMT Notes
Example 32bit Stack Buffer Overflow Exploit
Netmap Notes
Sizeof Reference
Stack, Heap and Stack Frame
Valgrind Notes
ChucK
Bass-Kick-Hi-Hat
Expect Scripts
Cisco Interface Throughput
Host Interface Throughput
Cisco Watch
JavaScript
Audio Size
Data Calculators
EIGRP Metric Calculator
fartscroll.sj
Hamming Code Checker
Light Calcs
Power Calcs
Metamorphic Code
PHP Goto Replicator
MySQL
MySQL Admin Notes
PHP
Cacti 95th Alerts
Cacti GraphExport
Image Rotor
Process Control - Child Fork
Process Control - Fork Chaser
PingyThingy
Postgres
Postgress Admin Notes
PowerShell
VPN Ping Test
Project Euler
Problems
Problem 1
Problem 2
Problem 3
Problem 4
Problem 5
Problem 6
Problem 7
Problem 8
Problem 9
Problem 10
Problem 13
Problem 14
Problem 16
Problem 20
Python
Multi-Process Parallel Sorting Comparison
Basic Netmiko Example
PeeringDB
Example 1, Find Matching PoPs
Example 2, Public Peering using OpenConfig (JSON over gRPC)
Scapy Examples
SVN Notes
Visual Basic/VBScripts/.NET/Visual Studio
Disk Usage
Empty Recycling Bin
File Distribution per Department
File Reporter
PortListener
Print Audit
Print Audit Wrapper
Update AD Details
Documents
2013-02 Improving Home Broadband @ HantsLUG
2013-09 MSc Dissertation
2014-02 Etherate @ LINX84
2014-02 SmokeTrace @ LINX84
2015 - Peering Costs and Benefits
2017-11 @ 3rd SIG-PMV
2018-01 UKNOF39
The xDSL Reference
Other
Mac
.DS_Store Files
Connection Managing and Monitoring
Create AD Home Directories
Open Directory and Server Admin Backup
TimeMachine Sparsebundle
Update from SUS Now
Which AD DC?
Dennis Ritchie
Reading
Security
Anonymity
Example 32bit Stack Buffer Overflow Exploit
ICMP Messages (Frequency)
MPLS VPN Security
MPLS VPN Security 100 - Overview
MPLS VPN Security 101 - Basic Label Hopping with Ping
MPLS VPN Security 102 - VPLS Label Injections
Notes on SSL Certs
Sun
Netra T1 105 LOM Serial Cable
Voice/VoIP/SIP/PSTN
Asterisk
.Call Files Intro
Basic SIP Trunk
Call Recording With Pause
DAHDI Monitoring
CLI Examples
Hold Music From Ogg Stream
PlayTones() - Sorcerer's Apprentice
Extracting RTP Payload from PCAP
PJSIP Call Testing
Rotating PCAP on SIP Trunk for RTP and SIP caputres
Windows
Active Directory/Exchange
Backup Group Policy
Backup Print Server
Content Filter BypassedSenders
Disconnected Mailboxes
Email Attachment with Powershell
Exchange Certificate
Exchange DB Size
Exchange Mailbox Stats (Last Logon)
Export to PST
List Domains and Primary Addresses
List Primary SMTP Addresses
Resuming Exchange Installer
Windows Server 2008
VM Tuning
Windows 7 - MTU Settings
Virtualisation
Host Tuning and Testing
Ganeti
Ganeti Commands
Issues and Patches
KVM
KVM Guest Install Examples
KVM Install and Configure Notes
KVM Tuning & Notes
Qemu, KQemu, KVM
Serial/Console Access to Guest
Vagrant
IOS-XRv
VirtualBox
Backup VirtualBox Machines
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