Multicast host behavior of a DAP
To illustrate the behavior of a DECT Access Point as a multicast host, refer the following table.
It provides a textual representation of the traffic on the DAP network interface.
The following is the sequence of actions:
1. The DAP is powered up.
2. The boot program retrieves update information through DHCP and TFTP (frames
2-10).
3. The firmware is started, which reinitializes the network stack, retrieves provisioning
information through DHCP and TFTP (frames 13-22), and opens the multicast
port.
4. The DAP joins the multicast group, initiating the sending of unsolicited IGMP join
messages (frame 23 and 26).
This fulfills the first multicast host requirement.
5. A General Query is sent from the Querier (frame 40).
6. The DAP responds with its multicast group membership report (frame 41).
This fulfills the second multicast host requirement.
The IP addresses used in the traffic example are defined in the following table.
Table 23: IP address definitions for traffic example
Element
IP address
Network address
192.168.21.0/24
DHCP / TFTP for DAP provisioning
192.168.21.251
DAP Controller for SIP DECT configuration
192.168.21.102
SIP DECT system multicast address
239.192.49.21
DAP
192.168.21.222
IGMP Querier
192.168.21.221
The following table is an example of a textual representation of a network capture.
No
.
Time
Source
Destination Protoc
ol
Info
1
14:18:46.89
3950
192.168.21
.102
239.192.49
.21
UDP
Source port: nxlmd Destination
port: hbci
DAP multicast group membership
262 SIP DECT Fundamentals
October 2012
Содержание CS 1000
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Страница 74: ...Site planning and hardware deployment 74 SIP DECT Fundamentals October 2012 Comments infodev avaya com ...
Страница 146: ...System administration 146 SIP DECT Fundamentals October 2012 Comments infodev avaya com ...
Страница 160: ... Show Seen DAPs System maintenance 160 SIP DECT Fundamentals October 2012 Comments infodev avaya com ...
Страница 174: ...System maintenance 174 SIP DECT Fundamentals October 2012 Comments infodev avaya com ...
Страница 182: ...G 729 daughterboard and DAP wall mounting 182 SIP DECT Fundamentals October 2012 Comments infodev avaya com ...
Страница 204: ...Site survey example 204 SIP DECT Fundamentals October 2012 Comments infodev avaya com ...
Страница 266: ...DAP multicast group membership 266 SIP DECT Fundamentals October 2012 Comments infodev avaya com ...