[GTER] IGMP Cisco

[GIULIANO (UOL)]

Anisio,

Boa noite,

Habilite o roteamento multicast em modo global:

Router(config)#ip multicast-routing

... depois habilite o protocolo pim (sparse mode) nas
interfaces fisicas ou virtuais:

Router(config-if)#ip pim sparse-mode

Acredito que isso fara com que o protocolo IGMPv2 fique
habilitado em todas as interfaces que tiverem o protocolo
"pim" habilitado.

Se vc precisar trafegar alguma coisa em multicast ... tambem
sugiro:

Router(config-if)#ip route-cache flow
Router(config-if)#ip mroute-cache

... nas interfaces !!!

e ... em modo global:

Router(config)#ip pim rp-address a.b.x.y -> IP de um dos
roteadores para centralizar os anuncios multicast de classe
D.


Fiz os testes aqui e parece que funcionou ... veja:

Projeto#show ip igmp interface fastEthernet 0/0
FastEthernet0/0 is up, line protocol is up
  Internet address is 192.168.10.1/24
  IGMP is disabled on interface
  Multicast routing is disabled on interface
  Multicast TTL threshold is 0
  No multicast groups joined by this system

Apos aplicar os comandos acima descritos ... veja:

Projeto#show ip igmp interface fastEthernet 0/0
FastEthernet0/0 is up, line protocol is up
  Internet address is 192.168.10.1/24
  IGMP is enabled on interface
  Current IGMP host version is 2
  Current IGMP router version is 2
  IGMP query interval is 60 seconds
  IGMP querier timeout is 120 seconds
  IGMP max query response time is 10 seconds
  Last member query count is 2
  Last member query response interval is 1000 ms
  Inbound IGMP access group is not set
  IGMP activity: 1 joins, 0 leaves
  Multicast routing is enabled on interface
  Multicast TTL threshold is 0
  Multicast designated router (DR) is 192.168.10.1 (this
system)
  IGMP querying router is 192.168.10.1 (this system)
  Multicast groups joined by this system (number of users):
      224.0.1.40(1)


Att,

Giuliano






Pessoal,

Tenho dois Cisco 3360G interligados através de um Trunk em
cima de
um Port-channel com duas fibras, em cada um dos switchs
tenha uma porta na
VLAN4, elas se comunicam sem problemas (unicast), mas
coloquei um serviço
que está utilizando IGMPv1 nessas portas. Me parece que o
IGMPv1 não está
passando pelo Trunk, segue alguns Shows:

SWT_XX_01#sh ip igmp inter vlan 4
Vlan4 is up, line protocol is up
  Internet address is 10.X.3.9/24
  IGMP is enabled on interface
  Current IGMP host version is 1
  Current IGMP router version is 1
  IGMP query interval is 60 seconds
  Inbound IGMP access group is not set
  IGMP activity: 2 joins, 0 leaves
  Multicast routing is enabled on interface
  Multicast TTL threshold is 0
  Multicast designated router (DR) is 10.X.3.9 (this system)
  IGMP querying router is 10.X.3.9 (this system)
  Multicast groups joined by this system (number of users):
      224.0.1.40(1)

SWT_XX_01#sh ip igmp inter port-channel 1
Port-channel1 is up, line protocol is up
  Internet protocol processing disabled
  IGMP is disabled on interface
  Multicast routing is disabled on interface
  Multicast TTL threshold is 0
  No multicast groups joined by this system

SWT_XX_01#sh ip multicast
  Multicast Routing: enabled
  Multicast Multipath: disabled
  Multicast Route limit: No limit
  Multicast Triggered RPF check: enabled
  Multicast Fallback group mode: Dense