Installation Guide
Table Of Contents
- PMP 450i and PTP 450i Configuration and User Guide
- Safety and regulatory information
- Contents
- List of Figures
- List of Tables
- About This Configuration and User Guide
- Chapter 1: Reference information
- Chapter 2: Configuration
- Preparing for configuration
- Task 1: Connecting to the unit
- Task 2: Configuring IP and Ethernet interfaces
- Configuring the AP IP interface
- NAT, DHCP Server, DHCP Client and DMZ in SM
- Configuring the SM IP interface with NAT disabled
- Configuring the SM IP interface with NAT enabled
- NAT tab of the SM with NAT disabled
- NAT tab of the SM with NAT enabled
- Reconnecting to the management PC
- VLAN Remarking and Priority bits configuration
- VLAN tab of the AP
- VLAN tab of the SM
- VLAN Membership tab of the SM
- PPPoE tab of the SM
- NAT Port Mapping tab of the SM
- Task 3: Upgrading the software version and using CNUT
- Task 4: Configuring General and Unit settings
- Task 5: Configuring security
- Isolating APs from the internet
- Encrypting radio transmissions
- Managing module access by passwords
- Requiring SM Authentication
- Filtering protocols and ports
- Encrypting downlink broadcasts
- Isolating SMs
- Filtering management through Ethernet
- Allowing management only from specified IP addresses
- Configuring management IP by DHCP
- Restricting radio Telnet access over the RF interface
- Security tab of the AP
- Filtering protocols and ports
- Protocol Filtering tab of the AP
- Port configuration tab of the AP
- Security tab of the SM
- Protocol Filtering tab of the SM
- Port Configuration tab of the SM
- Task 6: Configuring radio parameters
- Task 7: Setting up SNMP agent
- Task 8: Configuring syslog
- Task 9: Configuring remote access
- Task 10: Monitoring the AP-SM Link
- Task 11: Configuring quality of service
- Maximum Information Rate (MIR) Parameters
- Token Bucket Algorithm
- MIR Data Entry Checking
- Committed Information Rate (CIR)
- Bandwidth from the SM Perspective
- Interaction of Burst Allocation and Sustained Data Rate Settings
- High-priority Bandwidth
- Traffic Scheduling
- Setting the Configuration Source
- Quality of Service (QoS) tab of the AP
- DiffServ tab of the AP
- Quality of Service (QoS) tab of the SM
- DiffServ tab of the SM
- Task 12: Performing an Sector Wide SA
- Task 13: Zero Touch Configuration Using DHCP Option 66
- Task 14: Configuring Radio via config file
- Task 15: Configuring a RADIUS server
- Understanding RADIUS for PMP 450i
- Choosing Authentication Mode and Configuring for Authentication Servers - AP
- SM Authentication Mode – Require RADIUS or Follow AP
- Handling Certificates
- Configuring your RADIUS servers for SM authentication
- Assigning SM management IP addressing via RADIUS
- Configuring your RADIUS server for SM configuration
- Using RADIUS for centralized AP and SM user name and password management
- RADIUS Device Data Accounting
- RADIUS Device Re-authentication
PMP 450i and PTP 450i Configuration and User
Task 11: Configuring quality of service
Active CIR configuration can be verified via the AP’s Home => Session Status tab.
Bandwidth from the SM Perspective
In the SM, normal web browsing, e-mail, small file transfers and short streaming
video are rarely rate limited with practical bandwidth management (QoS) settings.
When the SM processes large downloads such as software upgrades and long
streaming video or a series of medium-size downloads, the bucket rapidly drains,
the burst limit is reached, and some packets are delayed. The subscriber experience
is more affected in cases where the traffic is more latency sensitive.
Interaction of Burst Allocation and Sustained Data Rate
Settings
If the Burst Allocation is set to 1200 kb and the Sustained Data Rate is set to 128
kbps, a data burst of 1000 kb is transmitted at full speed because the Burst
Allocation is set high enough. After the burst, the bucket experiences a significant
refill at the Sustained Data Rate. This configuration uses the advantage of the
settable Burst Allocation.
If both the Burst Allocation and the Sustained Data Rate are set to 128 kb, a burst is
limited to the Burst Allocation value. This configuration does not take advantage of
the settable Burst Allocation.
If the Burst Allocation is set to 128 kb and the Sustained Data Rate is set to 256
kbps, the actual rate is the burst allocation (but in kbps). As above, this
configuration does not take advantage of the settable Burst Allocation.
High-priority Bandwidth
To support low-latency traffic such as VoIP (Voice over IP) or video, the system
implements a high-priority channel. This channel does not affect the inherent
latencies in the system but allows high-priority traffic to be immediately served. The
high-priority pipe separates low-latency traffic from traffic that is latency tolerant,
such as standard web traffic and file downloads.
The number of channels available on the AP is reduced by the number of SMs
configured for the high-priority channel (each SM operating with high-priority
enabled uses two channels (virtual circuits) instead of one).
A module prioritizes traffic by
• reading the Low Latency bit (Bit 3) in the IPv4 Type of Service (ToS) byte in a received
packet. Bit 3 is set by a device outside the system.
• reading the 802.1p field of the 802.1Q header in a received packet, where VLAN is
enabled on the module.
156
pmp-0957 (April 2015)