Cisco NME-16ES-1G - Etherswitch Service Mod 16 Instrukcja Użytkownika Pobierz pdf (Strona 8)

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Q&A

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Stateful firewall, intrusion prevention, and network analysis for all traffic processed by

the router

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Wire-speed IP router access control lists (RACLs) on the switch modules, full Layer 3 and 4

ACLs on the hosting router for non-IP traffic

Q. What devices can I connect to the switch ports?

A. Switch ports can be used to connect any IP host device such as PC workstations, servers,

IP phones, and printers. Ethernet connected non-IP devices can be attached such as hosts

using legacy protocols (Internetwork Packet Exchange [IPX], AppleTalk, and Systems Network

Architecture [SNA]). Additional switches or hubs can be connected to switch ports for further

extension or segmentation of the LAN.

Q. Do the EtherSwitch service modules support Cisco SmartPorts?

A. SmartPorts are intelligent macros designed to make switch deployment more intuitive.

SmartPorts allows the system administrator or network manager to define a series of

templates for common switch port configurations. The EtherSwitch service modules support

SmartPorts macros. Please see

http://www.cisco.com/go/smartports for more information on

the capability of Cisco SmartPorts.

Q. Do the EtherSwitch service modules support trunking?

A. Yes, the modules support both InterSwitch Link (ISL) and IEEE802.1q encapsulation on

trunk ports.

Q. Do the EtherSwitch service modules support VLAN Trunk Protocol (VTP)?

A. Yes, the EtherSwitch service modules support VTP and VTP pruning for reducing network

traffic by restricting flooded traffic to links destined for stations receiving the traffic.

Q. Do the EtherSwitch service modules support VLANs with numbers above 1005?

A. Yes, the EtherSwitch service modules support VLAN IDs in the full 1 to 4094 range allowed by

the IEEE 802.1Q standard.

Q. Do the EtherSwitch service modules support Voice VLAN?

A. Yes, the EtherSwitch service modules supports Voice VLAN for creating subnets for voice

traffic from Cisco IP phones.

Q. Can the EtherSwitch service modules control VLAN1 for security?

A. Yes VLAN1 minimization for reducing the risk of spanning-tree loops or storms by allowing

VLAN1 to be disabled on any individual VLAN trunk link. With this feature enabled, no user

traffic is sent or received on the trunk. The switch CPU continues to send and receive control

protocol frames.

Q. How do the EtherSwitch service modules process ACLs?

A. IP ACLs can be processed in the switching application-specific integrated circuit (ASIC)

directly on the module for inter-VLAN traffic or traffic outbound from any VLAN interface.

Processing IP ACLs on the blade will result in very high near wire-speed performance and

places no overhead on the router CPU. Although the switching ASIC is optimized for IP traffic,

non-IP ACLs must be filtered by MAC address. The host router processes Layer 3 or 4 filtering

in non-IP ACLs as well as ACLs for traffic going to interfaces off of the module. The hosting

router cannot apply ACLs to traffic that is switched directly between interfaces on the

EtherSwitch service module or that remains within the stack if using Cisco StackWise

technology.

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Q&A 1
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