Extreme networks Summit1 Manuale Utente

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11-7

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ISPLAYING

 IP M

ULTICAST

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OUTING

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ETTINGS

The following is the configuration for the router labeled IR1:

config vlan HQ_10_0_1 ipaddress 10.0.1.2 255.255.255.0

config vlan HQ_10_0_2 ipaddress 10.0.2.2 255.255.255.0

config ospf add vlan all

enable ipforwarding

enable ospf

enable ipmcforwarding

config dvmrp add vlan all

enable dvmrp

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To display settings for IP multicast routing components, use the commands listed in 

.

Table 11-3: IP Multicast Routing Show Commands

show dvmrp {vlan <name> | route | all}

Displays the DVMRP configuration and 
statistics, or the unicast route table. The 
default setting is 

all

.

show igmp snooping {<vlan <name> | all}

Displays IGMP snooping registration 
information, and a summary of all IGMP 
timers and states.

show ipmc cache {<group> {<src_ipaddress> 
<mask>}} | all}

Displays the IP multicast forwarding cache. 
Information displayed includes the following:

■

IP group address

■

IP source address and mask

■

Upstream neighbor

■

Interface to upstream neighbor

■

Route expiration timer

■

Routing protocol

■

List of next hop interfaces and protocols

Summit.bk : 11IPMULT.FM  Page 7  Thursday, June 18, 1998  9:27 AM