Browse Me

Bridging & Switching [14], Bury the hatchet [27], Case Studies [5], CISCO HOW-TO [21], Hacks [1], Industry [6], IP Services [3], IPv6 [6], MPLS [28], NetSpresso [1], Network Design [28], Off Topic [13], Packet Switching [3], Platforms [5], QOS [5], Routing [14], BGP [30], IGP [10], EIGRP [4], ISIS [15], OSPF [13], RIP [3], Security [4], Software [1], TCP/IP [11], Tools [2], Troubleshooting [2], WAN technologies [4], Frame-Relay [4], PPP [6], What Is ? [13]


Bridging & Switching [14] ↑

Option AB - Inter-AS MPLS VPN - The whole story (5) - Updated Dec 2008
System MTU explained
What is: BPDU filter?
How-to: Configure Private VLANs
How-to: Configure Spanning Tree Protocol Part3
How-to: Configure Spanning tree protocol Part2
How-to: Configure spanning tree protocol (STP) Part1
Spanning Tree the problem and the solution
Etherchannel load balancing case study
What is: extended VLAN range?
How-to: Configure trunk VLAN allowed list?
How-to: Configure trunking
VTP in brief
Native VLAN 



Bury the hatchet [27] ↑

The endless story of OSPF vs IS-IS - Part 4 "The Inside Out"
The endless story of OSPF vs IS-IS - Part 3 "Packets and Database"
The endless story of OSPF vs IS-IS - Part 2 "The history"
The endless story of OSPF vs IS-IS
MTU and ping size confusion
VRF Selection Based on Source IP Addresses
CEF and load sharing
IS-IS and fast convergence ongoing tricks
LDP neighbor discovery, session establishment and maintenance
BGP performance tuning - Convergence, Stability, Scalability and NSF (Part 3)
Draft Martini, Draft Kompella and L2VPN services
Carrier Supporting Carrier - The whole story (2)
Carrier Supporting Carrier - The whole story (1)
Inter-AS MPLS VPN - The whole story - Updated Dec 2008
BGP performance tuning - Convergence, Stability, Scalability and NSF (Part 2)
BGP performance tuning - Convergence, Stability, Scalability and NSF (Part 1)
Cisco and Nonstop Forwarding
Option AB - Inter-AS MPLS VPN - The whole story (5) - Updated Dec 2008
Option 3 (10C): Multi-Hop MP-eBGP Between RR and eBGP Between ASBRs - Inter-AS MPLS VPN - The whole story (4) - Updated Dec 2008
 Option 2 (10B): ASBR-to-ASBR / MP-eBGP for VPNv4 - Inter-AS MPLS VPN - The whole story (3) - Updated Dec 2008
Option 1(10A): Back-to-Back VRF - Inter-AS MPLS VPN - The whole story (2) - Updated Dec 2008
Inter-AS MPLS VPN - The whole story (1) - Updated Dec 2008
BGP helicopter view
Prefix-list dilemma
OSPF DR/BDR Election Myth
OSPF RID Story
The ip route-cache command - Bury the hatchet series



Case Studies [5] ↑

Troubleshoot#1: Correlation vs Causation
Before you buy a Console Server
Out of Band Management Networks - Console Servers
What you need to know about ADSL (broadband Networks #1)
Etherchannel load balancing case study



CISCO HOW-TO [21] ↑

How to: use IS-IS overload bit
VRF Lite
BGP Route Reflector Basics
distribute-list gateway with OSPF
BGP Default-Originate insights
How-to: Avoid DNS lookup when mistyping a command
How-to: Configure Private VLANs
How-to: Configure Spanning Tree Protocol Part3
How-to: Configure Spanning tree protocol Part2
How-to: Configure spanning tree protocol (STP) Part1
How-to:Configure BGP aggregation Part2
How-to: Configure trunk VLAN allowed list?
How-to:Configure PPP authentication Part2 (CHAP)
How-to: Configure PPP authentication Part1 (PAP)
PPP in brief
How-TO: Configure DHCP on a CISCO router
How-to: Configure Frame-relay Switching
Limiting non-business related applications during work hours
How-to: Configure trunking
How to Configure Frame-relay interfaces
How-to:Configure BGP aggregation Part1



Hacks [1] ↑

Cheat: your portable memory bank



Industry [6] ↑

CCIE SPv4.1 Blueprint Resources
Software-Defined Networks .. A Primer
How to become a Network Engineer?
What can you learn in 5 minutes a day !
7 Actions to get your network ready for IPv6
The Ongoing Internet Core Routing Race



IP Services [3] ↑

ARP Caching and Timeout
How-to: Avoid DNS lookup when mistyping a command
How-TO: Configure DHCP on a CISCO router



IPv6 [6] ↑

What is 6PE?
IPv6 Tutorial
IPv6 Tutorial: IPv6 Unicast Address
IPv6 Tutorial: IPv6 Addressing #1
IPv6 Tutorial: The overview
7 Actions to get your network ready for IPv6



MPLS [28] ↑

What is 6PE?
MPLS Label Distribution: LDP Part3
MPLS Label Distribution - LDP Part2
MPLS Label Distribution - LDP Part1
The Role of BGP in MPLS networks
MPLS Label Operations
What is MPLS?
Choosing PE-CE Routing protocol
VRF Selection Based on Source IP Addresses
IS-IS and fast convergence ongoing tricks
VRF Lite
MPLS VPN security threats
LDP neighbor discovery, session establishment and maintenance
What is LDP extended discovery?
Draft Martini, Draft Kompella and L2VPN services
MPLS Special Labels
Static Routes Label Binding
Carrier Supporting Carrier - The whole story (2)
Carrier Supporting Carrier - The whole story (1)
Inter-AS MPLS VPN - The whole story - Updated Dec 2008
MPLS control and forwarding planes
Option AB - Inter-AS MPLS VPN - The whole story (5) - Updated Dec 2008
Option 3 (10C): Multi-Hop MP-eBGP Between RR and eBGP Between ASBRs - Inter-AS MPLS VPN - The whole story (4) - Updated Dec 2008
 Option 2 (10B): ASBR-to-ASBR / MP-eBGP for VPNv4 - Inter-AS MPLS VPN - The whole story (3) - Updated Dec 2008
Option 1(10A): Back-to-Back VRF - Inter-AS MPLS VPN - The whole story (2) - Updated Dec 2008
L2VPN Pseudowire Redundancy (MPLS AToM Redundancy)
Inter-AS MPLS VPN - The whole story (1) - Updated Dec 2008
What is: AToM Control-Word?



NetSpresso [1] ↑

JUNOS Disable vs Deactivate interfaces



Network Design [28] ↑

L3 fabric DC -The underlay Network (BGP) -part2
L3 fabric DC -The underlay Network -Part1
Classic DC and M-LAG
BGP in the Data Center
What is 6PE?
Making Sense of Broadband networks: PPPoE Explained
Making sense of Broadband networks  – VLAN Model
Making sense of Broadband networks - Part 1
7 Actions to get your network ready for IPv6
How to: use IS-IS overload bit
Before you buy a Console Server
Out of Band Management Networks - Console Servers
The endless story of OSPF vs IS-IS - Part 4 "The Inside Out"
The endless story of OSPF vs IS-IS - Part 3 "Packets and Database"
The endless story of OSPF vs IS-IS - Part 2 "The history"
The endless story of OSPF vs IS-IS
How to select your core routers?
CRS-1 Hardware Overview
Carrier Routing System (CRS-1) Overview
BGP table analysis and statistics
IS-IS and fast convergence ongoing tricks
Link state protocols and Areas concept
Fast Convergence: IS-IS performance tuning
BGP performance tuning - Convergence, Stability, Scalability and NSF (Part 1)
Fast Convergence: Partial SPF calculation
Fast convergence overview
Network Design Evaluation
Routers' Operating systems



Off Topic [13] ↑

What can you learn in 5 minutes a day !
Few ways scripting can keep you sane
The Forgotten skill of technical writing
Life Follows a Plan, but the Plan is not Yours !
Measuring your SUCCESS
It is time to make a CHANGE
Cisco Profit up 79% Stock down 8%
Simple Ideas Create Great Realities
Eman in Cairo
Interview with Emmanuel Conde
WISB Free Telnet Tool
I woke up in the morning and the internet was not there
Real job description for a Network Architect



Packet Switching [3] ↑

Per packet vs Per destination load balancing
Load balancing in a nutshell
The ip route-cache command - Bury the hatchet series



Platforms [5] ↑

How to select your core routers?
CRS-1 Hardware Overview
Carrier Routing System (CRS-1) Overview
Routers' Operating systems
Routers' Memory types



QOS [5] ↑

Frame-relay Discard Eligibility Bit (DE)
Frame-relay traffic shaping using MQC
CAR - Rate limit examples
Limiting non-business related applications during work hours
PBR as a QOS tool



Routing [14] ↑

The endless story of OSPF vs IS-IS - Part 4 "The Inside Out"
The endless story of OSPF vs IS-IS - Part 3 "Packets and Database"
The endless story of OSPF vs IS-IS - Part 2 "The history"
The endless story of OSPF vs IS-IS
CEF and load sharing
Static routes and next hops
BGP performance tuning - Convergence, Stability, Scalability and NSF (Part 1)
Option AB - Inter-AS MPLS VPN - The whole story (5) - Updated Dec 2008
Connected Routes Advertisment
How routers select best routes ?
Automatic summarization in RIP and EIGRP
OSPF cost calculation pitfall with high bandwidth interfaces
How-to:Configure BGP aggregation Part1
BGP fast-external-fallover
BGP [30] ↑

L3 fabric DC -The underlay Network (BGP) -part2
L3 fabric DC -The underlay Network -Part1
Classic DC and M-LAG
BGP in the Data Center
What is 6PE?
BGP Weight Attribute
BGP Attributes List
BGP Attributes: Local Preference Attribute
BGP Attributes: Atomic Aggregate Atribute
BGP Attribute Types and Flags
The Role of BGP in MPLS networks
BGP Route Refresh Capability
BGP 4-Byte ASN
BGP Security
Choosing PE-CE Routing protocol
BGP Routing Information Base (RIB)
BGP table analysis and statistics
BGP Next-hop address tracking
Why BGP?
BGP Route Reflector Basics
BGP performance tuning - Convergence, Stability, Scalability and NSF (Part 3)
BGP 4-byte AS numbers
BGP performance tuning - Convergence, Stability, Scalability and NSF (Part 2)
BGP performance tuning - Convergence, Stability, Scalability and NSF (Part 1)
BGP Default-Originate insights
Understanding BGP communities
BGP helicopter view
How-to:Configure BGP aggregation Part2
How-to:Configure BGP aggregation Part1
BGP fast-external-fallover



IGP [10] ↑

The endless story of OSPF vs IS-IS - Part 4 "The Inside Out"
The endless story of OSPF vs IS-IS - Part 3 "Packets and Database"
The endless story of OSPF vs IS-IS - Part 2 "The history"
The endless story of OSPF vs IS-IS
Fast Convergence: Partial SPF calculation
Fast convergence overview
Connected Routes Advertisment
How OSPF selects best routes
Passive-interface command behavior in RIP, EIGRP & OSPF
Automatic summarization in RIP and EIGRP
EIGRP [4] ↑

EIGRP metric manipulation
EIGRP timers (hello, hold and active)
Passive-interface command behavior in RIP, EIGRP & OSPF
Automatic summarization in RIP and EIGRP



ISIS [15] ↑

How to: use IS-IS overload bit
The endless story of OSPF vs IS-IS - Part 4 "The Inside Out"
The endless story of OSPF vs IS-IS - Part 3 "Packets and Database"
The endless story of OSPF vs IS-IS - Part 2 "The history"
IS-IS DIS in Practice
IS-IS Neighbor Discovery
The endless story of OSPF vs IS-IS
IS-IS MTU Mismatch
IS-IS and fast convergence ongoing tricks
OSPF & IS-IS Router ID
Link state protocols and Areas concept
Fast Convergence: IS-IS performance tuning
IS-IS explained Part2 (Routing Levels)
What is Integrated ISIS?
IS-IS explained (Part1)



OSPF [13] ↑

The endless story of OSPF vs IS-IS - Part 4 "The Inside Out"
The endless story of OSPF vs IS-IS - Part 3 "Packets and Database"
The endless story of OSPF vs IS-IS - Part 2 "The history"
The endless story of OSPF vs IS-IS
OSPF & IS-IS Router ID
Link state protocols and Areas concept
OSPF Virtual-links vs GRE tunnels
distribute-list gateway with OSPF
OSPF DR/BDR Election Myth
OSPF RID Story
How OSPF selects best routes
Passive-interface command behavior in RIP, EIGRP & OSPF
OSPF cost calculation pitfall with high bandwidth interfaces



RIP [3] ↑

How-to:Configure RIP route summarization
Passive-interface command behavior in RIP, EIGRP & OSPF
Automatic summarization in RIP and EIGRP









Security [4] ↑

Black hole filtering
MPLS VPN security threats
Unicast Reverse Path Forwarding
Limiting non-business related applications during work hours



Software [1] ↑

Cheat: your portable memory bank



TCP/IP [11] ↑

TCP Protocol: Slow Start
TCP Protocol: Flow Control
TCP Protocol: TCP 3-way handshaking #2
TCP Protocol: Three-way Handshake
TCP Protocol: The Overview - Part1
Understand MTU and MRU - The Full Story
PPPoE MTU Explained
What is MTU?
Private IP address ranges
Jumbo Frames
ARP Caching and Timeout



Tools [2] ↑

text2pcap - How to convert ASCII packet dumps to .pcap files?
DHCP client testing tool



Troubleshooting [2] ↑

Troubleshoot#2:  Core Dumps for Network Engineers
Troubleshoot#1: Correlation vs Causation



WAN technologies [4] ↑

Static routes and next hops
What is: IP unnumbered?
How-to: Configure Frame-relay Switching
How to Configure Frame-relay interfaces
Frame-Relay [4] ↑

Frame-relay Discard Eligibility Bit (DE)
Frame-relay traffic shaping using MQC
How-to: Configure Frame-relay Switching
How to Configure Frame-relay interfaces



PPP [6] ↑

Making Sense of Broadband networks: PPPoE Explained
PPPoE MTU Explained
Making sense of Broadband networks - Part 1
How-to:Configure PPP authentication Part2 (CHAP)
How-to: Configure PPP authentication Part1 (PAP)
PPP in brief






What Is ? [13] ↑

Software-Defined Networks .. A Primer
Making Sense of Broadband networks: PPPoE Explained
What is MTU?
Private IP address ranges
IPv6 Tutorial: The overview
What is MPLS?
What is LDP extended discovery?
What is Integrated ISIS?
What is: a voice VLAN port?
What is: BPDU filter?
What is: extended VLAN range?
What is: IP unnumbered?
What is a virtual template/access interface?