Frequently asked questions about switches

A. About stacking technology: How does the 1.Catalyst 3500XL/2900XL stack be implemented?

A. Special tiered cabling is required, 1 m long or 50 cm long (cab-gs-1m or cab-gs-50cm) and a dedicated gigabit stacked card Gigastack GBIC (WS-X3500-XL) (which already contains cab-gs-50cm stacked cables).

B. There are 2 stacking methods available: Daisy Chain (providing 1G of bandwidth) or point-to-point method (2G bandwidth available).

C. 2 ways to do backups.

D. Daisy chain method can support up to 9 switch stacks, point-to-point method can support up to 8 units.

2. Does the Catalyst 3500 XL series switch support redundant backups when stacked?

There are two ways to implement stacking of CATALYST3500XL series switches: Daisy Chain and point-to-point.

When the daisy chain is used, the tiered switches are connected sequentially, and the switch can reach 1Gbps of transmission bandwidth; When using a point-to-point approach, a separate CATALYST3508G-XL switch is required, and the remaining switches are connected to 3508G via stacked gbic cards and stacked cables. This method can achieve a maximum of 2Gbps Full-duplex transmission bandwidth. Both of these methods support stacked redundant connections, respectively. When using daisy-chained connections, redundant connections are made by connecting the top switch to the bottom switch with a stacked cable. When point-to-point connection is used, it is accomplished by using the 2nd 3508 switch.

3. A Gigabit Catalyst3500 XL uses a stack of cards to make a stack, and can another gigabit port connect a gigabit switch or gigabit server?

OK. Need to use the 1000BASE-SX gbic or 1000base-lx/lh gbic.

B. On cluster technology

1. What are the main types of products that can support cluster technology, and what are the software versions required?

　　

Name	Software version Requirements	Switch category
Catalyst 1900/2820 Series (A, EN)	9.00.00 and above, at this time command Switch requires 12.0 (5) XP and above	Member Switch
Catalyst 2900 XL Series (A, EN)	Free upgrades to 11.2 (8x) SA6 and above	Member Switch
Fee upgrade to 11.2 (8x) SA6 and above (including command capable software)	Command Switch
>>catalyst 3508G XL (A, EN)	>>11.2 (8x) SA6 and above (Command capable software included)	>>member Switch or Command Switch

C.ethernet Channel Technology

1. Ethernet Channel Tech. What network devices can be applied between? How to use it?

can be applied between switches, between switches and routers, 2 or 4 10/100mbps or 1000Mbps ports can be used between switches and servers to use Ethernet Channel Tech. Up to 400M (10/100mbps port), 4G ( 1000Mbps port) or 800M (10/100mbps port), 8G (1000Mbps port) bandwidth.

2. What is the role of Ethernet Channel technology?

Increased bandwidth, load balancing, line Backup

3. When the port is set to Ethernet channel, how to select the line?

Depending on the Ethernet source address and destination address of the data frame or the last 1-bit or 2-bit operation, decide which link to output from. For routers, the output of a link is determined by the network address or operation.

4. What is the difference between Ethernet Channel Technology and PAgP (Port Aggregation Protocol)?

PAGP is an enhanced version of Ethernet Channel that supports Channel tree spanning and protocol Fast on Ethernet uplink and supports automatic provisioning of Ethernet Channel bundles.