赫斯曼交换机配置说明-TTT_00_04_MC-HandsOn

Notes: Content

❑Hands-on L2 multicasting

❑Hands-on L3 multicasting (routing)

Tasks:

T k

❑Build up a tree structure without and with IGMP and check the behavior

❑Build up a HIPER Ring structure without and with IGMP …

❑Build up a routed network with DVMRP and check the behavior

❑Build up a routed network with PIM-DM and check the behavior

❑Build up a HIPER Ring with routed networks …

B ild HIPER Ri ith t d t k

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❑Microsoft Windows 95 and NT 4.0 support IGMPv1.

Notes:❑Microsoft Windows 98 and 2000 support IGMPv2.

❑Microsoft Windows XP supports IGMPv3. But there are still

a lot other devices in a network with v2 only. Thus IGMPv2

should be configured on devices (default of Hirschmann

g(

platform). A XP host receiving a v2 packet automatically

changes to v2 till a timer expires.

❑The IGMP snooping release can be configured globally only, thus it is identical in all VLANs.

❑On HIPER Ring ports “Forwarding All” should be configured.

In HIPER Ring one querier is enough

❑In HIPER Ring one querier is enough.

❑Querier selection is available as of IGMPv2. Please

remember the flooding problem mentioned in the appendix

of last presentation.

Local workaround is to configure static query ports in

direction of the MC source segment.

❑Querier interval by default = 125 s. Minimum accepted in Querier interval by default=125s Minimum accepted in

3.0.03 = 2 s (depending on max response time)

(Config)# set igmp querier tx-interval

Notes:Commands:

❑> enable

❑# show igmpsnooping

❑# show running-config [all]

#fi

activates IGMPsnooping ❑# config ❑(Config)# set igmp

❑(Config)# set igmp querier tx-interval

❑Max response time must be less than querier interval. Default: 10 s

(Config)# set igmp querier max-response-time activates IGMPsnooping

(g)g p q p ❑Note:a Windows XP notebook connected to v1 and v2 queriers changed from v3 to v1 after 83 minutes.

After changing querier version to v2 the XP client changed from v1to v2after 4:35minutes from v1 to v2 after 4:35 minutes.

The next change from v2 to v1 happened after a couple of seconds.