Memory and flash specifications of S series fixed switch

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For memory and flash specifications of the S1720, see "Hardware Structure" in the Product Description.
For memory and flash specifications of the S3700, see "System Configuration" in the Hardware Description.
For memory and flash specifications of the S2700, S5700, S6700, and S600, see "Technical Specifications" in the Hardware Description.
For the product description of the S1720, see < S1720 Hardware Description >.
For the hardware description of the S2700, see .
For the hardware description of the S3700, see .
For the hardware description of the S5700, see < S5700Hardware Description >.
For the hardware description of the S6700, see < S6700Hardware Description >.
For the hardware description of the S600, see < S600Hardware Description >.

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Upgrading S series switch through BootROM
To upgrade S series switches (except S1700 switches) using the BootROM, perform as follows: 1. Prepare the software package to be uploaded, and start the FTP or TFTP software on the PC as an FTP or TFTP server. 2. Connect the PC to the switch through a console cable, and start the terminal software (such as SecureCRT or HyperTerminal). 3. Power off and restart the switch. When the message "Press Ctrl+B to enter BOOTROM menu..." is displayed, press Ctrl+B to enter the BootROM menu. (The default BootROM password of fixed switches is huawei in versions earlier than V100R006C03 and Admin@huawei.com in V100R006C03 and later. The default BootROM password of modular switches is 9300 in versions earlier than V100R006 and Admin@huawei.com in V100R006 and later.) 4. Enter the file system submenu to verify that sufficient space is available for storing the system software. 5. Enter the Ethernet submenu to set FTP or TFTP parameters as prompted and download the system software package for the upgrade from the FTP server. 6. Enter the startup submenu to specify the newly uploaded system software package as the software for next startup. 7. Restart the switch.

Default file types in the flash memory of an S series switch
After an S series switch (except the S1700) is powered on, it initializes the configuration by reading the configuration file from the flash memory by default. When you run the dir flash: command in the user view, the following information is displayed: dir flash: Directory of flash:/ Idx Attr Size(Byte) Date Time FileName 0 -rw- 812 Jan 01 2008 00:00:56 private-data.txt 1 -rw- 948 Jan 01 2008 07:16:55 vrpcfg.zip 2 -rw- 90,602 Jan 03 2008 03:58:15 v200r008sph001.pat 3 -rw- 6,418,980 Jan 19 2008 20:19:42 s2700-v100r005.cc 4 -rw- 12,240 Jan 03 2008 04:52:43 $_patchstate_reboot 14,632 KB total (8,228 KB free) In the command output: - vrpcfg.cfg: indicates the configuration file. - s2700-v100r005.cc: indicates the system software. - private-data.txt: indicates the file used to save service initialization data. Initialization data of some tasks (for example, the number of times the switch restarts) is irrelevant to the configuration and is not recorded in the configuration file. The private-data.txt file records initialization data of these tasks. - $_patchstate_reboot: records patch status. This file is created after the switch runs a patch. This file is protected by the system and cannot be deleted. The file records status of all patches, for example, the active state and running state. - v200r008sph001.pat: indicates a patch file. The name extension of patch files is .pat. Sometimes, the flash memory saves a notilogindex.txt file. If a destination host is configured for Inform traps, the number recorded in this file is used as the initial serial number and filled in the Request ID field in SNMP packets. The system starts a timer when the SNMP task starts, and updates the file every 12 hours.

Specifications of stacks of S series fixed switches
Sorry, I can't answer this question. For details about product specifications, click http://e.huawei.com/en/service-hotline to look up the contact method of your local customer service engineers.

Advantages of stacks of S series fixed switches
Stacking technology provides high network reliability and forwarding performance while simplifying network management. It has the following advantages: 1. High reliability: Member switches in a stack work in redundancy mode. Link redundancy can also be implemented between member switches through inter-device link aggregation. 2. High scalability: You can increase ports, bandwidth, and processing capacity of a stack by simply adding member switches to the stack. Member switches can join or leave the stack without affecting other member switches. New switches automatically synchronize the configuration file and system software version with the master switch. 3. Simpler configuration and management: You can log in to a stack from any member switch to manage and configure all the member switches in the stack. In addition, complicated Layer 2 ring protection protocols or Layer 3 protection switching protocols are not required after switches set up a stack; therefore, the network configuration is much simpler.

Upgrade stacks of S series fixed switches
You can upgrade a stack of S series fixed switches using either of the following methods: Traditional upgrade: All member switches in the stack need to restart. This upgrade method causes service interruption in a relatively long time and can be used in scenarios insensitive to the service interruption time. Upgrade procedure 1. Upload system software to the master switch in the stack. 2. Run the startup system-software system-file all command to set the next startup software for all member switches in the stack. 3. Run the reboot command to upgrade the stack by restarting the entire system. Smooth upgrade: Member switches in a stack can be divided into an active area and a backup area that back up each other. Member switches in the two areas are upgraded in turn. During the upgrade of an area, traffic is transmitted through the other area, minimizing the impact of the upgrade on services. This upgrade method applies to scenarios sensitive to the service interruption time. The stack and networking must meet the following requirements: The uplinks and downlinks work in redundancy mode. The system software for next startup supports the smooth upgrade function. Member switches in the stack are running the same system software with the same software package name, version, and path. Member switches in the stack have the same system software for next startup with the same software package name, version, and path. Upgrade procedure 1. Upload system software to all the member switches in the stack. Ensure that member switches have the same system software with the same software package name, version, and path. 2. Run the system-view command to enter the system view. 3. Run the upgrade backup-area slot slot-id to slot-id command to define the active and backup areas for a smooth upgrade. The member switches with stack IDs in the specified range join the backup area, and the other member switches automatically join the active area. Note: Follow these rules to define the active and backup areas in a stack: The active and backup areas cannot contain the same member switch, and both areas must have at least one member switch. The backup area cannot contain the master switch. Member switches in each area must be directly connected. Member switches in the active and backup areas form the entire stack. 4. (Optional) Run the display upgrade area command to check whether the configured areas meet the requirements of the current stack topology. If the stack topology changes after the areas are configured, the smooth upgrade will fail. To avoid this problem, check the area configuration before starting a smooth upgrade. If the areas fail the check, redefine the active and backup areas correctly according to the current stack topology. 5. Run the upgrade start command to enable a smooth upgrade. 6. (Optional) Run the display upgrade state [ slot slot-id ] command to check the smooth upgrade status.

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