Q: How are slots of an S9712 chassis distributed?

A:

Q: What are the types of the Main Control Boards of the S7700 and S9700?

A:

The main control boards of the S7700 include ES0D00MCUA00, ES0D00SRUA00, ES0D00SRUB00,and ES1D2SRUH000. The details are as follows:

• The ES0D00MCUA00 is installed on the S7703.
• The ES0D00SRUA00, ES0D00SRUB00 and ES1D2SRUH000 are installed on the S7706 and S7712.

The main control boards of the S9700 include EH1D2MCUAC00, EH1D2SRUDC00, EH1D2SRUDC01, and EH1D2SRUC000. The details are as follows:

• The EH1D2MCUAC00 is installed on the S9703.
• The EH1D2SRUDC00, EH1D2SRUDC01 and EH1D2SRUC000 are installed on the S9706 and S9712.

Q: Are the Main Control Boards and LPUs hot swappable?

A: All the main control boards and LPUs of the S7700&S9700 are hot swappable. In addition, the fans and power supplies are hot swappable.

The ES0D00FSUA00, ES02VSTSA, EH1D2VS08000 and ES1D2VS04000 are not hot swappable.

Q: Does the S7700 and S9700 support hot backup?

A: The S7700&S9700 supports hot backup. When the master main control board fails, the S7700&S9700 automatically switches services to the slave board without interrupting the services. The software versions of the master board and slave board must be the same.

Q: Does the GE optical LPU of the S7700 and S9700 support 100M optical module?

A: Yes, the S7700&S9700’s GE optical LPU supports both 100M optical modules and 1000M optical modules.

When a 100M optical module is used, you must run the speed 100 command on the interface to set the interface rate to 100 Mbit/s.

When using a GE optical module, an interface works at 1000 Mbit/s by default. If auto-negotiation is enabled on the interface, the interface speed cannot be set to 100 Mbit/s. If auto-negotiation is disabled, you can run the speed 100 command to set the interface speed to 100 Mbit/s.The 100M optical interface can only use the 100M optical module, and the default interface rate is 100M.

When two optical interfaces are interconnected, they must use the same type of optical module.

Q: What are the differences between the E series, F series, and S series LPUs of the S7700 and S9700?

A: S7700&S9700 LPUs are classified into three series: E series, F series, and S series.

The E series is the enhanced series, and supports Multiprotocol Label Switching (MPLS) and extension of routing, ACL, and MAC address entries. The E series consists of the EA, EC, ED, and EE LPUs.

The F series is the ordinary series, and supports MPLS but not extension of MAC address entries. The F series consists of the FA and FC LPUs.

The S series is the standard series and does not support extension of MAC address entries. The S series consists of the SA and SC LPUs. The SA LPUs do not support MPLS, whereas the SC LPUs support MPLS.

Q: Does S9700 support DAD of IPv6 Link-Local addresses?

A: S9700 supports DAD of IPv6 link-local addresses from the V200R001 version.

Q: What operations should be performed when error statistics are displayed on the S9700 series switches interface?

A: If the optical interface is used, check the optical module of the interface, the full duplex status of the local end and the peer end, and the fiber. You can replace the optical module of the interface and test the S9700 Series Switches.
If the electrical interface is used, check the network cable connection and the full duplex status of the local end and the peer end.

Q: Can GE optical modules and GE electrical modules be installed on the same interface board of the S9700?

A: GE optical modules and GE electrical modules can be installed on the same 1000M optical interface board of the S9700, but you must configure the O/E converter on the 1000M optical interface board.
The 1000M optical interface board of the S9700 can use only the Huawei certified converter. When O/E converters of other vendors are installed on interfaces of the S9700, the interfaces still work as optical interfaces.

Q: What are the functions of the CF card of the S7700 and S9700?

A: The S7700&S9700 series switches support standard CF cards. The default capacity of a CF card is 512 MB, expandable to 1 GB or 2 GB. The CF card is used to store system files, configuration files, paf, License, and log files.

The S7700&S9700 series switches can start by using the startup file in the CF card. In this case, the system software package is stored on the CF card. It is required to specify the system software package on the CF card as the boot file. On the S7700&S9700 series switches, logs can be stored on the CF cards.

Q: How does S9700 write Logs to CF card?

A: The logs are cached instead of being immediately written into the log files on the CF card. The S9700 supports two methods to write the logs:
1, On S9700, the cache can store 33 KB logs. When the cache is full, the logs are written  into the log file on the CF card.
2, You can also store logs to the CF card manually. That is, run the save logfile command in the user view. The  information in the cache can be immediately written into the log file on the CF card.

Q: Is the CF card hot swappable?

A: The CF cards are not hot swappable.

Q: Does S9700 support the adjustment of fan speed?

A: The S9700 series switches support the adjustment of fan speed. The speed of operating fans can be automatically adjusted based on the temperature inside the chassis. In addition, you can also manually change the fan speed using the set fan-speed command. You can run the display fan command to check the status of fans.

Q: Are the power modules of the S9700 hot swappable?

A: Power modules of the S9700 are hot swappable. Before removing a power module, ensure that the chassis can work normally without the power module. When removing or installing a power module, take electrical protective measures to avoid electric shock.

Q: Does the S7700 and S9700 support the AC power supply and DC power supply?

A: AC and DC power modules or power modules of different power values cannot be installed simultaneously in the same type of power slots (system or PoE). In versions earlier than V200R006C00, the PoE slots of a switch allow only AC power modules. To use the PoE function on a switch, use AC power modules as the system power modules. In V200R006C00 and later versions, the PoE slots allow both AC and DC power modules.

Q: Does the S9700 support the optical modules of other vendors?

A: Use optical modules certified for Huawei switches. Non-certified optical modules cannot ensure transmission reliability and may affect service stability on the switch. Huawei is not responsible for any problem caused by non-certified optical modules and will not fix such problems.