CISCO FAQs-switch related (1)

The IT Certification Examination Resources Network has collected a number of training materials for Cisco agents, including answers to pre-sales questions concerning routers, switches, IP/TV, firewalls, VPNs, network management, HFCs, VOIP, and equipment procurement., it can also be used as an entry-level document.
12. Question: Which switches Does Cisco currently support layer-3 switching?
Answer: Catalyst 2948G-L3, Catalyst 4908G-L3, Catalyst 4003, Catalyst 4006, Catalyst 5000, Catalyst 6000, and Catalyst 8500 series.
13. Question: Can the Catalyst 2948G stack with the Catalyst 3500XL GigaStack GBIC?
Answer: No. The structure of the Catalyst 2948G is different from that of the Catalyst 3500XL, And the Catalyst 2948G does not support the GigaStack GBIC module, so it cannot be stacked.
14. Question: What is the forwarding rate of each layer-3 packet on the Catalyst 2948G-L3, 4000, and 6000?
Answer: Catalyst 2948G-L3: 11 Mpps; Catalyst 4000: 6 Mpps; Catalyst 6000/6500: 15Mpps to 150Mpps.
15 Question: What is the maximum connection diameter of a Catalyst switch?
Answer: Yes. Generally, the maximum connection diameter of a vswitch is 7. If this number is exceeded, it will cause instability in the computing of the production tree. Therefore, when the connection diameter is close to or equal to 7, use the star row network topology as much as possible.
16. Question: Does catalyst 4000 support ISL?
Answer: catalyst 4000 does not support ISL and 802.1q.
17. Question: How do I determine your vswitch engine model?
Answer: Use the command show version you will see the line card model: WS-X5xxx = SupI generation) WS-X55xx = SupII generation) WS-X553x = SupIII generation) from the physical appearance look: generation 1 engine-only the reset key and no PCMCIA slot. Second generation engine-Reset key, active status light, no PCMCIA. Three generations of engines-with a PCMCIA slot and a port connected to a superior.
19. Q: What are the features of the MSM, NFFC, MSFC, and PFC switches?
Answer: MSMMultilayer switch module) is the layer-3 routing card used on 6000, and the layer-3 forwarding capability of 6 mpps NFFC is the 5000 series super engine 3. x adds functions such as ip mls, IGMP, and layer-3 filtering. The layer-3 routing sub-card of the super engine on MSFC 6000 provides 15 Mpps L3 forwarding IP addresses and IPX packet forwarding capabilities. It works with the PFC card to provide IP multicast capabilities. The PFC card is used to provide layer-3 functions for vswitches, such as VLAN access list control and QOS access list. MSFC is not required to install the PFC card, but you must install the PFC when installing MSFC. Explanation of MSM, NFFC, MSFC, and PFC problems: Can you explain the functionality of the following and differentiate between them-MSM, NFFC, MSFC, PFC?
20 question: Is GBIC required for the upstream module WS-U5534-GESX/WS-U5536-GELX of the Catalyst 5000 upstream engine III?
Answer: No. These two modules are not GBIC Gigabit modules. You only need to connect the optical fiber jumper.
21. Question: How does the upstream connection module of Catalyst 5000 appear in Configuration Tool?
Answer: You need to select the corresponding engine and complete the Update or Check before the corresponding connection module will appear.
22 question: how is the WS-X4232-RJ-XX module and WS-U4504-FX-MT module on the Catalyst 4003/4006 used?
The WS-U4504-FX-MT is the child card on the WS-X4232-RJ-XX.
23 Question: What is the difference between PFC and MSFC In the Catalyst 6000 series? Are both required?
Answer: The PFC sub-card can support intelligent L3/4 switching services (such as QoS and Security) without the need for a Layer-3 routing engine. PFC provides traffic access control, classification, and priority assignment through a proprietary ASIC-Based Packet detection mechanism. In addition, PFC can be combined with advanced packet sorting and conflict avoidance technologies to achieve a predetermined rate of traffic, significantly improving performance and network operation predictability. The traffic exceeding the specified limit may be discarded or forwarded at a low rate as required by the user. MSFC needs to be used with PFC to provide full multi-protocol routing support except for the QoS and security provided by PFC.
24 problem: what is the difference between 6000 W power supply and W power supply on the Catalyst?
Answer: 6009/6509 W power supply must be used on the Catalyst 6006/6506, and W or 1300W power supply can be used on the Catalyst.
25 question: can the Catalyst 2900XL series switches stack with the Catalyst 3500XL series switches?
Answer: A Catalyst 2900XL switch with a gigabit port, such as a Catalyst 2924 M, can be stacked with a Catalyst 3500XL switch. However, the cost of the 2900XL series switches is high at this time, so it is best to use the 3500XL switch stack.
26 question: what does WS-C2924-XL-EN-5P mean?
Answer: 5 WS-C2924-XL-EN packaging products.
27 question: What cables should a vswitch use to connect to a vswitch?
Answer: There are two cases: A: Some vswitches have A specific cascade port dedicated for the connection between vswitches. At this time, you only need to use A normal direct connection cable. B: For switches without cascade ports, use a crossover cable.
28 question: does the Master/Slave engine work normally in high-end switches?
Answer: only the sub-modules on the backup engine E2A/E3A In the Catalyst 5000 Series can work normally, while other switch backup engines do not work normally.