Cisco cBR 8 - NLS Tlvs; Control Point Discovery; CPD Protocol Hierarchy

NLS TLVs
The following NLS TLVs are supported for all CPD applications:
•
APPLICATION_PAYLOAD
•
IPV4_ERROR_CODE
•
IPV6_ERROR_CODE
•
AGID
•
A_CHALLENGE
•
A_RESPONSE
•
B_CHALLENGE
•
B_RESPONSE
•
AUTHENTICATION
•
ECHO
The following NLS TLVs are not supported for CPD applications:
•
NAT_ADDRESS
•
TIMEOUT
•
IPV4_HOP
•
IPV6_HOP
Control Point Discovery
The control point discovery feature allows CPD Requestors to determine the control point IP address between
the CPD Requestor and the media endpoint.
Using Networking Layer Signaling (NLS), the control point discovery feature sends a CPD message towards
the end point (MTA). The edge/aggregation device (CMTS), located between the requestor and the endpoint,
will respond to the message with its IP address.
For Lawful Intercept, it is important that the endpoint does not receive the CPD message. In this instance,
the CMTS responds to the message without forwarding it to its destination.
Note
CPD Protocol Hierarchy
CPD messages are sent over the NLS.
The CPD Protocol Hierarchy is as follows:
1
CPD
2
NLS
Cisco cBR Series Converged Broadband Routers Troubleshooting and Network Management Configuration
Guide for Cisco IOS XE Fuji 16.8.x
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Control Point Discovery
Control Point Discovery