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  • Cisco DCUCI training

    calendar Nov 28, 2011 · 1 min read · cisco training ucs  ·
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    This week I'm attending Cisco DCUCI course in Milan. I have no experience on blade servers or Cisco UC plaftorm and it'll be a great opportunity to learn new topics and move another step towards the datacenter.

    I've prepared for this course watching Cisco PEC videos and reading the two must-read books from Silvano Gai: …


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  • Certified in CCNP Security

    calendar Nov 23, 2011 · 1 min read · certification cisco  ·
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    Today I passed this Cisco exam: (642-647) Deploying Cisco ASA VPN Solutions v1.0 (VPN) and my CCSP certification is now updated to the new CCNP(Security).

    I've prepared the exam on the Cisco Press Official Cert Guide. The exam was not very hard, probably because I work on Pix/Asa platforms since 2007. The guide is very …


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  • CCIE R&S, not this time.

    calendar Jun 27, 2011 · 1 min read · ccie  ·
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    I didn't pass the CCIE RS Lab exam today in Brussels. This was my first attempt.

    I have to improve my troubleshooting skills and go deeper in some technologies but I think I can do it.

    I don't have plans for the next attempt yet, there're other personal projects that will take most of my free time in the next months. …


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  • Small servers

    calendar Mar 26, 2011 · 2 min read · networking  ·
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    A quick note about tcp small servers.

    DOC-CD says:

    The TCP small servers consist of three services: 
    Discard (port 9), Echo (port 7), and Chargen (port 19).
    

    If we do a portscan to a router before and after enabling tcp-small-server with the command:

    R(config)#service tcp-small-servers
    

    We can see that these ports are …


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  • PPPoE peer IP address

    calendar Mar 13, 2011 · 1 min read · cisco pppoe  ·
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    Quick note about PPPoE address assignment.

    IPCP

    CLIENT

    interface Dialer1
    **ip address negotiated**
    encapsulation ppp
    dialer pool 1
    dialer idle-timeout 0
    dialer persistent
    end
    

    SERVER

    ip dhcp-server 10.0.12.1
    interface Virtual-Template10
    ip address 10.0.32.2 255.255.255.0
    peer default ip address dhcp
    end
    

    DHCP

    CLIENT …


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  • The 10 Networking Commandments

    calendar Mar 13, 2011 · 1 min read · networking  ·
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    1. Thou shalt above all, maintain the integrity of the network.
    2. Thou shalt have a long term strategic direction.
    3. Thou shalt always opt for quality before expediency.
    4. Thou shalt meet the requirements, exceed the expectations and anticipate the needs of users.
    5. Thou shalt benefit from a successful implementation by careful …


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  • Autoinstall - Frame Relay

    calendar Mar 3, 2011 · 2 min read · autoinstall cisco framerelay tofix  ·
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    First of all: autoinstall works only on the first serial interface of the router, don't forget it.

    This is the topology for the small lab:

    "https://www.ifconfig.it/images/page4_blog_entry97-autoinstall_fr.jpg"
    

    R1 is a TFTP server, it stores R3 configuration in flash.

    R3 has no configuration.

    R2 interface is …


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  • Autoinstall - LAN

    calendar Mar 3, 2011 · 3 min read · autoinstall cisco tofix  ·
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    Autoinstall is a quite interesting topic, it deserves some labbing.

    Start from the DOC-CD as usual, we focus on the LAN implementation first.

    You can find HERE the flowchart of the autoinstall process.

    This guide is quite clear too:

    AutoInstall Using DHCP for LAN Interfaces

    This is the topology we'll use: …


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  • RMON and MIB

    calendar Mar 2, 2011 · 2 min read · cisco mib rmon snmp  ·
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    RMON is generally an easy task, can be tricky but usually on CCIE workbooks the task are fair. The hardest part for me is to find the MIB to monitor.

    This is the task: monitor interface Vlan1, send a trap if it receives more than 100 packets every 30 seconds, send a trap if it goes under 50 packets every 30 seconds. …


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  • Conditional Debug

    calendar Mar 1, 2011 · 1 min read · cisco debug  ·
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    Conditional debugging is used to filter debugging messages:

    R#debug condition ?
      application  Application
      called       called number
      calling      calling
      card         card
      glbp         interface group
      interface    interface
      ip           IP address
      mac-address  MAC address
      match-list   apply the …

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  • SNMPv3

    calendar Mar 1, 2011 · 2 min read · cisco snmp  ·
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    Snmp v3 is described in many RFC, like RFC3414 and so on.

    History and security of the various SNMP versions are easy to find and well known, let's focus on configuration.

    SNMPv3 can work in three ways:

    • noAuthNoPriv

    • authNoPriv

    • authPriv

    For the tests I use a Cisco871 as snmp-server and a OSX computer to walk the …


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  • OSX as Syslog server

    calendar Jan 11, 2011 · 1 min read · osx  ·
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    How to keep track of logs of a Cisco router using OSX? Easy task!

    Enable syslog listener on OSX: instructions here

    add this line to /etc/syslog.conf

    local7.* /var/log/cisco.log
    

    enable logging on the router:

    logging facility local7
    ! ip address of iMac
    logging 10.0.0.1
    

    install the Syslog Widget and configure it to …


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  • Hacking work

    calendar Dec 7, 2010 · 1 min read · book work  ·
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    "Breaking stupid rules for smart results."

    Not the best book ever but I liked the concept: don't stick to the rules if you feel the rules don't allows to work in and efficient way.

    Hacking work is actually intrapreneurship and requires a little anarchic spirit. How can we improve if we never try something …


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  • IP Expert BLS

    calendar Sep 30, 2008 · 1 min read · cisco training  ·
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    Today I officially start my CCIE R&S journey.

    I decided to follow the Cisco track from CCNA to CCNP and then attempt the CCIE exam, written and lab.

    After spending a lot of time researching for the best study material I decided to purchase the IPExpert's Blended Learning Solution. I'm paying for it out of my …


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  • Archive

    calendar Jan 1, 0001 · 0 min read  ·
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Gian Paolo

Network architect with some coding skills.
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