PTP 800 Series User Guide
Et hernet bridging
phn- 2513_004v000 ( Oct 2012)
1- 45
In-band management
In the in-band management mode, the management agent can be reached from the data
port at the local CMU, and (assuming that the wireless link is established) the data port at
the remote CMU. In this mode, the management port is disabled.
Management frames in the customer network are processed by the management agent if
(a) destination MAC address in the frame matches the CMU MAC address, and (b) the
VLAN ID in the frame matches the VLAN configuration of the management agent.
If Local Packet Filtering is enabled, unicast frames forwarded to the management agent
are filtered, that is, not forwarded in the customer network.
In-band quality of service
The CMU may be configured to tag the Ethernet frames generated by its management
agent. When configured for In Band Management, these frames are assigned to a queue
based on the priority code point in the same way as customer traffic.
Source address learning
If Local Packet Filtering is enabled, the management agent learns the location of end
stations from the source addresses in received management frames. The agent filters
transmitted management frames to ensure that the frame is transmitted at the Ethernet
(data or management) port, or over the wireless link as appropriate. If the end station
address is unknown, then management traffic is transmitted at the Ethernet port and over
the wireless link.
In out-of-band local management mode, management frames are not transmitted over the
wireless link, and so address learning is not active.
Wireless link down alert
The PTP 800 Series can be configured to alert a ‘loss of link’ to the connected network
equipment. It does this by means of a brief disconnection of the copper data port or fiber
data port. When the PTP 800 Series is configured for out-of-band operation, it also briefly
disconnects the management port. Ethernet disconnection typically occurs within 50 ms of
detection of link failure. The alert is triggered by any condition which prevents the link
from forwarding traffic in one or both link directions. Examples include a deep wireless
fade, equipment failure such as an RFU failure, and Ethernet cable disconnection. In 1+1
Hot Standby links, the alert will only be triggered if a protection switch does not resolve
the failure condition, for example if both sets of equipment at an end exhibit a fault or if
there is a deep wireless fade.
Summary of Contents for PTP 800 Series
Page 1: ...Cambium PTP 800 Series User Guide System Release 800 05 02 ...
Page 40: ...Licensing requirements About This User Guide 10 phn 2513_004v000 Oct 2012 ...
Page 232: ...Limit of liability Chapter 3 Legal information 3 22 phn 2513_004v000 Oct 2012 ...
Page 322: ...Radiation hazard assessm ent Chapter 4 Reference information 4 90 phn 2513_004v000 Oct 2012 ...
Page 428: ...Replacing IRFU components Chapter 5 Installation 5 106 phn 2513_004v000 Oct 2012 ...
Page 630: ...Using recovery mode Chapter 7 Operation 7 78 phn 2513_004v000 Oct 2012 ...