How I Became CCNA Certified

The Network Ananse

I gained an interest in the Cisco Certified Network Associate credential after being introduced to it for the first time in 2005 at a career seminar in university. It was a very esoteric field back then but it pricked my interest nevertheless and I decided to find out as much as I could about Cisco networking technology from that day.I was resolute.

Getting the study material was a big challenge as the few DVD’s which had been distributed during the seminar mysteriously « vapourized » and no one seemed to know who exactly was in possession of a copy.The bright light seemed to grow dimmer. Fast forward 3 years later in 2008 and a Cisco Academy started in my school. I signed on to the CCNA Exploration but dropped off after the first few classes. It wasn’t engaging enough and I found the content delivery boring.

A colleague informed me of a…

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On Cisco 1921 19Inch Rack Mount Kit ACS1900RM19

Rapid Methods In imaginary - The Options

On Cisco 1921 19Inch Rack Mount Kit ACS1900RM19 On Cisco 1921 19Inch Rack Mount Kit ACS1900RM19
The 642-997 DCUFI Implementing cisco Data Center Unified Fabric examination is associated with the CCNP DC qualifications and with the cisco Unified Fabric Support Specialist. This examination tests a candidate’s knowledge of implementing Cisco Data Center Unified Fabric structure, security, management, high accessibility, virtualization in the system.

There are quite a number of options or career parts a cisco Unified communications manager but the most prominent among this is the ?Cisco Voice and Unified communications administration certification?.

?Knowledge of Basic cisco Unified Communications manager plus cisco Utility connection.

The career scope of cisco Unified communications entails the training of professional cisco communication experts or managers that are capable of leading, planning, designing, and Implementing Cisco Unified communications products and equipments for business managers or owners who want to tackle complex business issues.

? cisco Unified communications enhances innovation by integrating collaborations and…

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IOS XR: SFP Non-Cisco not Supported

Life, love and notes

Satu waktu saat migrasi dari ME3600 dan 3800 ke ASR, ada kasus dimana di ASR9K si SFP dianggap tidak disupport oleh XR sehingga memunculkan log seperti:

RP/0/RSP0/CPU0:Dec 19 04:31:38.376 : invmgr[252]: %PLATFORM-INV-6-IF_OIRIN : xFP OIR: 0/0/0 port_num: 4 is inserted, state: 1 LC/0/0/CPU0:Dec 19 04:31:40.995 : pfm_node_lc[285]: %PLATFORM-SFP-2-DEV_SFP_PID_NOT_SUPPORTED : Set|vic_0[475258]|SFP(0x1029004)|SFP Module for port 04 is not a supported Product ID (PID)

untuk itu, saya kasih command:


interface gi0/0/0/4

transceiver permit pid all


Nah, setelah itu running well.  Running well dalam artian, si log tersebut tidak muncul lagi. Namun ternyata muncul masalah lain, si port sudah UP di kedua sisi tapi IP P2P-nya tidak bisa di-ping meski sudah di-enable (no shutdown) dan dikasih IP address. Cari-cari dan coba-coba, ternyata autonego di ASR9K (juga di CRS-3) itu disable. Untuk itu, ditambahkan command berikut:


interface gi0/0/0/4

negotiation auto


Akhirnya bisa di-Ping dengan baik.

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Life, love and notes

Kejadian unik ketika troubleshoot link, saat itu OSPF antara ASR9K dan ME3750 tidak mau establish dengan benar. Si IOS XR menampilkan proses OSPF (Exstart/Exchange). Padahal saat show interface gi1/1/1 di sisi C3750, si mtu bernilai 9000.

C3750#sh int gi1/1/2
GigabitEthernet1/1/2 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is xxx.yyyy
Description: Link to ASR9010
Internet address is xx.xx.xx.xy/30
MTU 9000 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not set
Full-duplex, 1000Mb/s, link type is auto, media type is 1000BaseZX SFP
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of « show interface » counters 40w6d
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops:…
Queueing strategy: fifo
Output queue: 0/40 (size/max)
30 second input rate 5000 bits/sec, 6 packets/sec
30 second…

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