02_7_在LAN环境下限制组播流量

2019年7月27日 02:11 作者：金淼淋分类：Multicast  589

YES LAB
Constraining multicast streams on LAN
switch ports

CGMP Basics
IGMP Report
MAC - 0100.5e01.om.3
sec = oooo.c7a2.1093
224.1.2.3
192.1. 1.1
grc IP
croup = 224.1.2.3
(a)
1/1
5/1
GDA-
1/1
5/1
YES LAB
CGMP Join
- 0090.c7a2.1093
CDA = OlOO.Se01.0203
(b)
USA- icast Source Address
Group Destination Address

L2 Multicast Frame Switching
GMRP
•Solution 3: GARP Multicast Registrati
Protocol (GMRP)
— Runs on hosts and switches
- IEEE 802.1p GARP (Generic Attribute
Registration Protocol) extended to
multicast
— Protocol stacks in hosts must support the
standard
— Solves the problems in IGMP snooping
PIM
YES LAB
GMRP

Router-Only Switched Environment
Problems
— Existing mechanisms for constraining switched multicast
traffic deal with hosts only
— Routers do not send any IGMP report; all multicast traffic
forwarded to them
— Switches with router ports only; routers can be seriously
affected by unneeded streams
Receiver
YES LAB

L2 Multicast Frame Switching
RGMP
• Solution 4: Router-port Group
Management Protocol {RGM P)
• Even With CGMP or IGMP s ooping, any router
in L2 environment will be forwarded all
multicast
• Allows per-port forwarding of multicast in
router-only L2 switched topologies
• RGMP allows routers to tell the switch which
multicast groups they need to receive
YES LAB
PIM
RGMP
RGMP

RGMP
YES LAB
— Router component and switch component
— New link-local address assigned by IANA for router-
to-switch protocol
= 224.0.0.25
— RGMP routers send RGMP Hetios at regular intervals
— Switch learns about multicast routers
SOURCE
Receiver
RCMP
hello
hello
RGMP
RGMP
hello
hello
RGMP

RGMP
YES LAB
— RGMP routers send RGMP ( * , G) joins for groups that exist on
routers
— RGMP switch forwards only groups the routers need
— When a group times out, RGMP (*, G) leave is sent
— No multicast hosts may reside on such a segment
SOURCE
RGMP
RGMP (4, G) Join
RGMP
Receiver

Summary
YES LAB
After finishing this section you should be able
to perform the following tasks :
— Identify methods for constraining multicast traffic
on LAN switches and the roles of various devices
— List current technical solutions and explain their
impact on multicast deployment in switched LAN
environment

1.
2.
3.
4.
5.
Review Questions
YES LAB
List four soultions for effective Layer 2 multicast
forwarding!
For CGMP, which components are needed?
What is needed in a switch for effective IGMP
Snooping?
How can workstations tell the switch about interesting
IP multicast groups?
Were would you use RGMP?

Work Blog » 02_7_在LAN环境下限制组播流量

组播

分享到：

赞(0) 打赏

02_7_在LAN环境下限制组播流量

相关推荐

02_10_MSDP技术介绍

02_9_anycast RP

02_8_在NBMA环境下的组播

02_6_组播PIM-SM_RP

02_5_2_组播PIM-SM-SSM

02_5_1_组播PIM-SM-bidir

02_4_2_组播PIM-SM_详细图解

02_4_1_组播PIM-SM_理论部分

评论抢沙发

评论前必须登录！

最新文章

觉得文章有用就打赏一下文章作者

支付宝扫一扫打赏

微信扫一扫打赏