CCNP Wireless CUWSS 642-732 Summary Notes 12 : Planning for Site Survey

Kickoff Meeting Arrange to meet up with the all the people that will be involved in the project from the sponsors to the IT to the security team. This is when you review and finalize the Statement of Work SoW Reconsile contradicting answers. Verify scope of the mission. Explain the expectations Let them know what … Continue reading CCNP Wireless CUWSS 642-732 Summary Notes 12 : Planning for Site Survey →

CCNP Wireless CUWSS 642-732 Summary Notes 11 : Predictive Site Survey

Site survey could be done in 3 steps: Virtual site survey using a planning tool for a general overview ThisisusuallydoneusingtheWLC. First add the map of the area to be surveyed. Layer 1 sweep to discover existing RF Actual survey to establish the placing of the APs. Predictive Site Survey They do not take into account … Continue reading CCNP Wireless CUWSS 642-732 Summary Notes 11 : Predictive Site Survey →

CCNP Wireless CUWSS 642-732 Summary Notes 10 : Designing a mesh network

Design Considerations (especially outdoors) Consider the data rate required at the edge of the cell Larger cells offer binary phase shift keying (BPSK) or quadrature phase shift keying (QPSK) data rates at the edge but require fewer hops to wired network. Smaller cells may offer quadrature amplitude modulation (QAM) (16QAM or even 64 QAM) at the edge hence … Continue reading CCNP Wireless CUWSS 642-732 Summary Notes 10 : Designing a mesh network →

CCNP Wireless CUWSS 642-732 Summary Notes 9 : Mesh Networks

Indoor Mesh Networks This is an excellent way of providing coverage in hard to wire environments or where cables cannot be used or if cable length is too long (> 100 m). Indoor mesh access points: Cisco Aironet 1130 Series - controller based Cisco Aironet 1240 Series - controller based The APs deliver network access to … Continue reading CCNP Wireless CUWSS 642-732 Summary Notes 9 : Mesh Networks →

CCNP Wireless CUWSS 642-732 Summary Notes 8 : Bridging Models

Point to Point Wireless Links Cisco Aironet 1500 Series Access Point can use its backhaul radio to bridge two wired segments in point to point mode. Its a mesh network with only one MAP and no WLAN clients. If Ethernet bridging is enabled, then wireless client access can be provided but is not recommended if … Continue reading CCNP Wireless CUWSS 642-732 Summary Notes 8 : Bridging Models →

CCNP Wireless CUWSS 642-732 Summary Notes 7 : Survey Models

Data Only Coverage Does not require a large amount of overlap due to rate shifting; generally 5 to 10 percent, with 10 - 15 % overlap between the cells Separation of access points is typically 120 to 130 feet ( 37 to 40 m) 2.4 band 802.11b/g propagates through floors. The 5-GHz waveform of 802.11a has approximately … Continue reading CCNP Wireless CUWSS 642-732 Summary Notes 7 : Survey Models →

CCNP Wireless CUWSS 642-732 Summary Notes 6 : Safety and Aesthetics Considerations

Safety Considerations Ladder and Aerial Lift Safety - horizontal distance from the top support to the footoftheladder is about one-fourth of the working lengthoftheladder. Do not exceed the lift maximum load, taking into account the worker, the materials, and the tools. Self-supporting (foldout) and portable ladders that are not self-supporting (leaning) must be able to support at least … Continue reading CCNP Wireless CUWSS 642-732 Summary Notes 6 : Safety and Aesthetics Considerations →

CCNP Wireless CUWSS 642-732 Summary Notes 5 : Regulatory Issues

Regulatory Domains: Several countries use the same regulatory rules, forming regulatory domains. They define such things as power of transmission, antenna gain and frequency used. A domain - US, Taiwan, Puerto Rico etc - Follow Federal Communication Commision rules E domain - Europe, Israel, Mexico, Singapore etc - follow Europe Telecommunication Standard Institute Rules Japan - follow Ministry … Continue reading CCNP Wireless CUWSS 642-732 Summary Notes 5 : Regulatory Issues →

CCNP Wireless CUWSS 642-732 Summary Notes 4 : 802.11n hardware

When performing a survey for 802.11n, signal strength is not an accurate predictor of 802.11n performance. Multipath can actually enhance performance with 802.11n clients. 802.11n hardware Disadvantage of non-802.11 hardware is that they may have 2 antennas per band but they both are connected to the same radio circuit so when they receive a signal, the … Continue reading CCNP Wireless CUWSS 642-732 Summary Notes 4 : 802.11n hardware →

CCNP Wireless CUWSS 642-732 Summary Notes 3 : RF Applications and Client Devices

RF Applications Data rate is just the link speed and not the throughput (download speed). 802.11b at an 11-Mbps data rate offers on average a 5.5-Mbps throughput. 11b usually degrades performance for other devices in the other bands. Avoid using this band, unless you have old devices. 802.11g at54Mbpsoffersonaveragea20-Mbps throughput butdegradesto6-Mbps throughput as soon as a 802.11b device … Continue reading CCNP Wireless CUWSS 642-732 Summary Notes 3 : RF Applications and Client Devices →