Cisco SGE2000 구성 매뉴얼 - 페이지 16

{카테고리_이름} Cisco SGE2000에 대한 구성 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Cisco SGE2000 46 페이지. Nx-os fabric extender
Cisco SGE2000에 대해서도 마찬가지입니다: 빠른 설치 매뉴얼 (32 페이지), 릴리스 노트 (16 페이지), 데이터시트 (5 페이지), 펌웨어 업그레이드 매뉴얼 (5 페이지), 빠른 시작 매뉴얼 (2 페이지)

IGMP Snooping

IGMP snooping is supported on all host interfaces of the Fabric Extender.

The Fabric Extender and its parent switch support IGMPv2 and IGMPv3 snooping based only on the destination

multicast MAC address. It does not support snooping based on the source MAC address or on proxy reports.

Note

For more information about IGMP snooping, see

rfc4541.txt. Also, see the Cisco Nexus 7000 Series NX-OS Multicast Routing Configuration Guide.

You can configure the host interfaces on the Fabric Extender as Switched Port Analyzer (SPAN) source ports.

You cannot configure Fabric Extender ports as a SPAN destination. Only one SPAN session is supported for

all the host interfaces on the same Fabric Extender. Ingress source (Rx), egress source (Tx), or both ingress

and egress monitoring are supported.

Note

All IP multicast traffic on the VLANs that a Fabric Extender host interface belongs to is captured in the

SPAN session. You cannot separate the traffic by IP multicast group membership.

If ingress monitoring and egress monitoring is configured for host interfaces on the same Fabric Extender,

you might see a packet twice: once as the packet ingresses on an interface with Rx configured, and again

as the packet egresses on an interface with Tx configured.

For more information about SPAN, see the Cisco Nexus 7000 Series NX-OS System Management Configuration

Guide.

In a switching environment, oversubscription is the practice of connecting multiple devices to the same

interface to optimize port usage. An interface can support a connection that runs at its maximum speed. Because

most interfaces do not run at their maximum speeds, you can take advantage of unused bandwidth by sharing

ports. Oversubscription, which is a function of the available fabric interfaces to active host interfaces, provides

cost-effective scalability and flexibility for Ethernet environments.

The Cisco Nexus 2248TP Fabric Extender has 4 10-Gigabit Ethernet fabric interfaces and 48 100/1000BASE-T

(100-Mb/1-Gigabit) Ethernet host interfaces. When its host interfaces are running in Gigabit Ethernet mode,

it offers the following configurations:

• No oversubscription (40 host interfaces for four fabric interfaces)

• 1.2 to 1 oversubscription (48 host interfaces for four fabric interfaces)

• 4.8 to 1 oversubscription (48 host interfaces for one fabric interface)

Cisco Nexus 2000 Series NX-OS Fabric Extender Software Configuration Guide

http://tools.ietf.org/wg/magma/draft-ietf-magma-snoop/

Overview

OL-25816-02