Dark Screen Occurs When An Iptv User Is Watching A Scrambled Live Channel Under The Ma5600 Because The Encryption Key Of The Ca Card Expires - Huawei MA5600 Manual

NGN Cases
Handling Proces
1. View the configurations. The loop detection function is enabled.
s:
2. Deactivate all the ports manually one by one to locate the faulty port, because the new
MA5600 does not have many users.
3. After port 0/0/4 is deactivated, the S8505 does not report the loop alarm and the user reports
that the dialing is normal. Therefore, the loop exists on port 0/0/4.
4. Check on site. It is found that the user connects two ADSL lines (the corresponding ports are
0/0/4 and 0/0/5 respectively) to the hub to increase the bandwidth. Thus, the loop occurs.
5. According to the designed loop detection mechanism of the MA5600, the PC connected to the
modem can capture the loop detection packet (see the attachment) whose destination address is
0180-c200-0011. When the PC is connected to the modem of a certain type that is connected to
port 0/0/4 and port 0/0/5, the PC cannot capture the loop detection packet whose destination
address is 0180-c200-0011. Therefore, the packet is discarded by the modem.
5. After the modem to which port 0/0/4 and port 0/0/5 are connected is replaced by the MT800,
the PC can capture the loop detection packet whose destination MAC address is
0180-c200-0011. 6. Use the MT800 and set up the loop network again (that is, both cables are
connected to the hub). In this case, the MA5600 reports a loop alarm and deactivates the port.
HZ_XingShiA_MA5600(config)#
! running major 2009-02-12 10:01:03 alarm name :user port forms a loop network
parameter :local port of the loop network: frame ID: 0, slot ID: 0, port ID: 4; peer port of the
loop network: bridge MAC:
00E0-FC91-2FBE, frame ID: 0, slot ID: 0, port ID: 5
HZ_XingShiA_MA5600(config)#
! running major 2009-02-12 10:01:03 alarm name :user port forms a loop network
parameter :local port of the loop network: frame ID: 0, slot ID: 0, port ID: 5; peer port of the
loop network: bridge MAC:
00E0-FC91-2FBE, frame ID: 0, slot ID: 0, port ID: 4
7. The modem of a certain type (no manufacturer is indicated) cannot transparently transmit the
loop detection packet transmitted by the MA5600 with the destination address 0180-c200-0011.
Thus, the loop detection function fails.
Suggestions and
Currently, the loop detection function of the MA5600 V300R002 can be implemented only if the
Summary:
modem of the user transparently transmits the BPDU packet that is used for the loop detection. If
the modem of the user does not transparently transmit the BPDU packet that is used for the loop
detection, the loop detection function cannot be implemented. The modems in the existing
network are various. Most of the modems, however, do not support the transparent transmission.
Therefore, the loop detection function cannot be implemented in the existing network.
The loop detection function of the MA5600 V300R003C05 is optimized. The loop detection
function is implemented through a private packet, and the protocol type can be set. If a port
receives the loop detection packet transmitted by the MA5600, the MA5600 deactivates this
ADSL port that receives the packet based on the information of the ADSL port in the packet.
Thus, the loop network on the user side can be prevented.
1.7 Dark Screen Occurs When an IPTV User Is Watching a Scrambled Live Channel Under
the MA5600 Because the Encryption Key of the CA Card Expires
Dark Screen Occurs When an IPTV User Is Watching a Scrambled Live Channel Under the
Title:
MA5600 Because the Encryption Key of the CA Card Expires
ID: SE0000383788
Information
Troubleshooting Cases
Type :
Product Family: Broadband Access
Fault Type: BTV Service
Keywords: MA5600, IPTV, CA system, encryption key, dark screen
Permission Level: 04Common Users Permission
Phenomenon Descr
A certain IPTV user on the triple play network of certain operator reports that dart screen occurs
iption:
when watching the scrambled live channel. Other services for the user, such as HSI and VoD,
8
Confidential Information of Huawei. No Spreading without Permission
Chapter 1 MA5600 Cases
Quality Level:
C
Product: SmartAX MA5600