CCDA 640-864 Summary Notes – Chapter 3 – Day 6

Server Connectivity Options Single NIC (FE GE Full duplex + No redundancy) Dual NIC Etherchannel - redundancy Dual NIC to separate access - redundancy Content switching - redundancy + load balancing per user request Enterprise Data Center Port density for servers Low latency layer 2 Suport both single and dual connected servers Aggregation (Distribution) Layer … Continue reading CCDA 640-864 Summary Notes – Chapter 3 – Day 6

CCDA 640-864 Summary Notes – Day 5

LAN Hardware Repeaters Layer 1 device Connects separate segments Do not control broadcasts or collision domains Forward frames out all other interfaces Protocol transparent understands bits Amplify the signals 5-4-3 Rule: The maximum path between two stations on the network should not be more than five segments, with four repeaters between those segments, and no more than … Continue reading CCDA 640-864 Summary Notes – Day 5

CCDA 640-864 Summary Notes – Day 4

IEEE 802.3-2002 (Ethernet Standards) Design Rules Round trip propagation delay should be less than 512-bit times in one collision domain. Max for 10 Mbps - 51.2 microseconds. Max for 100 Mbps - 5.12 microseconds 10 Base 5 No longer used Max segment = 500 m Max collision domain = 2500m of 5 segments Has a maximum diameter … Continue reading CCDA 640-864 Summary Notes – Day 4

CCDA 640-864 Summary Notes – Day 3

Hierarchical Network Models Advantages Cost savings Ease of understanding becausee of simple design and lower management costs as monitoring systems are distributed. Network growth as changes are contained to a small subset  of the network and only impact that small area Easy to isolate a problem in the network if the hierarchial model is used … Continue reading CCDA 640-864 Summary Notes – Day 3

Summary Notes: JUNOS as a second Language

Differences between IOS and JUNOS. 1) JUNOS can be managed using the following options: CLI - Console, SSh and Telnet J-Web SNMP Junoscope Junos Script API NETCONF API SDX Service Deployment System 2) Using pipe show interfaces terse show interfaces terse | match se-3 show interfaces terse | except fe- show interfaces terse | count … Continue reading Summary Notes: JUNOS as a second Language

Aruba 3200XM – Initial Configuration – Part 1

Got a larger toy 🙂 Initialization Wizard via Console Loading image 0:0############################################################################################################################################################################################################################################################################################################## Image is signed; verifying checksum... passed Signer Cert OK Policy Cert OK RSA signature verified. Booting image... Uncompressing core image files... 00:00:07 done. 00:00:42 Aruba Networks ArubaOS Version 6.1.3.6 (build 36470 / label #36470) Built by p4build@corsica.arubanetworks.com on 2012-12-11 at 12:51:05 PST (gcc … Continue reading Aruba 3200XM – Initial Configuration – Part 1

Day out with Aruba Controller 620 – Initial Configuration – Part 1

Playing around with my new toy 🙂 Just trying to find out what the Controller supports: Number of APs supported (Aruba620) #show license-usage ap AP Licenses ----------- Type Number ---- ------ AP Licenses 4 Overall AP License Limit 4 AP Usage -------- Type Count ---- ----- CAPs 0 RAPs 0 Tunneled nodes 0 Total APs … Continue reading Day out with Aruba Controller 620 – Initial Configuration – Part 1

Aruba 620 Controller Factory Reset

Doesn't it feel good starting on a clean slate...! Oh well, at least for Networking devices 🙂 Erase it all... (Aruba620) #write erase all Switch will be factory defaulted. All the configuration and databases will be deleted. Press 'y' to proceed : Write Erase successful Reload (Aruba620) #reload Do you really want to restart the … Continue reading Aruba 620 Controller Factory Reset

JNCIA Summary Notes – Day 2

JUNOS software Naming Example: jbundle-5.2R1.4-domestic-signed.tgz jbundle - package (jbundle, jroute, jpfe) 5.2 - Major version R - Stage (R - publicly released, A - Alpha version , B - Beta Version, I - Internal Test version) 1.4 - released_version domestic - type ( domestic contains jcrypto, expo does not) signed - package is protected with md5 … Continue reading JNCIA Summary Notes – Day 2