Allied Telesis 86251-08 manual MLD Snooping

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Patch 86251-08 For Rapier Series Switches

SHOW IP ADVERTISE

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The ADOPTVRIP parameter specifies that when the switch is acting as the VRRP master it should respond to requests directed at any IP address that it is backing up, even if it does not own that address. If it does not own the address the access requests that the switch will permit are limited to: ICMP echo requests (pings), Telnet, SSH, HTTP and SSL GUI, SNMP and DNS relay. All other types of access to the address will be ignored. The default is OFF.

If you set ADOPTVRIP to ON, give the VR an IP address that is different from the interface IP addresses of any of the individual routers in the VR, and only use the VR IP address to monitor the VR, not to configure any of its participating routers. Otherwise you risk confusion when you monitor or configure individual routers. See “ICMP Router Discovery Advertisements” on page 47 for more about risks and recommendations.

Configure all the switches in a virtual router with the same values for the VRRP virtual router identifier, IP address, adopt VR IP address mode, advertisement interval, preempt mode, authentication type and password. Inconsistent configuration will cause advertisement packets to be rejected and the virtual router will not perform properly.

To display the value of the new parameter, use the SHOW VRRP command.

Table 11: New parameter displayed in the output of the SHOW VRRP command

Parameter

Meaning

 

 

Adopt VR IP Address(es)

Whether or not the switch should respond to ICMP

 

echo, Telnet, GUI, SNMP and DNS relay service

 

requests targeted at the VR IP address(es) associated

 

with the virtual router, even if it does not own those

 

address(es).

 

 

MLD Snooping

Multicast Listener Discovery (MLD) snooping enables the switch to forward IPv6 multicast traffic intelligently, instead of flooding it out all ports in the VLAN. With MLD snooping, the switch passively listens to MLD joins/reports and leaves/done messages, to identify the switch ports that have received joins and/or leaves from devices attached to them. Multicast traffic will only be forwarded to those ports. MLD snooping will also identify ports that are connected to another router or switch and forward messages out those ports appropriately.

MLD snooping is performed at Layer 2 on VLAN interfaces automatically. By default, the switch will only forward traffic out those ports with routers or IPv6 multicast listeners, therefore it will not act as a simple hub and flood all IPv6 multicast traffic out all ports. MLD snooping is independent of the MLD and Layer 3 configuration, so an IPv6 interface does not have to be attached to the VLAN, and MLD does not have to be enabled or configured.

MLD snooping is enabled by default. To disable it, use the command:

DISABLE MLDSNOOPING

Patch 86251-08 for Software Release 2.5.1 C613-10356-00 REV I

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Contents Introduction Patch For Rapier Series SwitchesPCR Module IPG Level FeaturesPCR 03359 Module Core Level PCR Module BGP LevelPCR Module TTY, User Level PCR 03684 Module Core LevelPCR Module STP Level PCR Module FIRE, Utility LevelPCR Module Ipsec Level PCR Module Isakmp LevelPCR Module SW56 Level PCR Module Firewall LevelPCR Module IGP Level PCR Module SWI LevelPCR 31001 Module Dhcp Level PCR Module Utility LevelPCR Module BGP Level PCR Module File Level PCR 31081 Module VRRP, IP, TCP, TelnetPCR Module FFS Level PCR 31098 Module Dhcp LevelPCR Module IPX2 Level PCR 31106 Module MLD LevelPCR 02414 Module IPV6, SWI, IPG, Vlan PCR Module IPGPCR Module OSPF, IPG Level PCR Module ETH, IPG, IPv6, IPX LevelPCR 03751 Module Mlds Level PCR Module Install Level PCR Module FILE, INSTALL, SCR LevelPCR Module ETH Level PCR 03801 Module Mlds LevelPCR 03843 Module Dhcp Level PCR 03823 Module Vlan LevelPCR 03870 Module SWI, Vlan Level PCR Module IPG, IPV6 LevelPCR Module DHCP, Telnet Level PCR Module TTY LevelPCR Module Switch Level PCR Module IP ARP LevelPCR Module Ikmp Level PCR Module Firewall Network affecting No PCR Module L2TP Level PCR Module Ospf Network affecting NoPCR Module PRI Level PCR Module PPP LevelPCR 03515 Module Dhcp Level PCR Module BGP, TCP Level PCR Module HTTP, Firewall LevelPCR 03547 Module Dhcp Level PCR Module Http Level PCR Module FIREWALL, IPG Level PCR 03584 Module MLD LevelPCR Module Ping Level PCR 03615 Module Load Level PCR 03618 Module Dhcp LevelPCR Module STP, SWI Level PCR 03647 Module Snmp Level PCR 03691 Module Dvmrp Level PCR Module PKI LevelPCR 03698 Module Dvmrp Level PCR 03708 Module Dhcp LevelPCR Module IP Level PCR Module PPP, VJC LevelPCR Module Rsvp Level PCR Module Vrrp LevelFeatures PCR 03371 Module Dhcp Level PCR Module IPSEC, Ikmp LevelPCR Module SSL Level PCR 03410 Module VLAN, Core Level PCR 03405 Module Stream LevelPCR 03424 Module Dhcp Level PCR 03429 Module SWI, Vlan LevelPCR Module IPX Level PCR 03436 Module IP, Dhcp LevelPCR 03443 Module Dhcp Level PCR Module FR LevelPCR 03465 Module Dhcp Level PCR Module BGP, Firewall Level PCR 03492 Module HTTP, Load LevelPCR 03515 Module Dhcp Level PCR Module GUI Level PCR 02577 Module IPG, LOG LevelPCR 03089 Module Core Level PCR 03094 Module STP, Vlan LevelPCR Module PIM, DVMRP, IPG Level PCR 03096 Module Vlan LevelPCR 03109 Module LOG Level PCR Module Classifier LevelPCR Module IPG, SWI Level PCR Module ETH, IPG LevelPCR Module Cure Level PCR Module Port LevelPCR 03153 Module ACC Level PCR Module PCI LevelPCR 03167 Module Dvmrp Level PCR Module FIREWALL, LB Level PCR Module CORE, FFS, TTY LevelPCR Module LB Level PCR Module User LevelPCR 03229 Module Load Level PCR 03205 Module Dhcp LevelPCR 03239 Module QOS Level PCR Module SWI, IPG, PIM LevelPCR 03247 Module MVR Level PCR Module VLAN, IPG Level PCR 03256 Module MLD LevelPCR Module DHCP, Q931, Telnet Level PCR 03336 Module Core Level PCR 03334 Module MVR LevelPCR 03346 Module Snmp Level PCR Module IP, SWI LevelVlan PCR 03370 Module MVR LevelPCR 03388 Module Dhcp Level ADD PPP Create PPP Delete PPP SET PPP Show PPP PCR 03068 Module SWI, QOS Level PCR 03067 Module Dhcp LevelPCR 03077 Module Core Level PCR Module IPV6 Network affecting NoPCR Module IPG Network affecting No PCR Module SWI Network affecting NoPCR Module PCI Network affecting No PCR Module IPG, ETH Network affecting NoPCR Module TELNET, PING, IPV6, Network affecting No Availability Icmp Router Discovery AdvertisementsPCR Module TCP Network affecting No PCR Module TM Network affecting NoRouter Advertisement Messages To change these settings, use one of the commands ADD IP Interface SET IP Interface Enable IP Advertise Disable IP AdvertiseADD IP Advertise Interface Delete IP Advertise Interface SET IP Advertise Interface Show IP Advertise Example output from the Show IP Advertise commandSame subnet Adopting the Vrrp IP Address MLD Snooping Ping Polling of Device Reachability Down device unreachable Icmp Redirect Enable and Disable Icmp MessagesDisable IP Icmpreply CommandsShow IP Icmpreply Static IgmpConfiguration Example Show IP Igmp CommandsSee Also Show IP Igmp Debug ADD IP Igmp Destination Create IP Igmp Destination Destroy IP Igmp Destination Delete IP Igmp DestinationEnable IP Igmp Debug Disable IP Igmp DebugShow IP Igmp Debug Checking the Port Map on Rapier16fi SwitchesHow to check that the port map is correct How to restore the correct port map Force Eprom download Y ? PPPoE Client on Vlan InterfacesADD PPP Create PPP SET PPP Delete PPPShow PPP VLANn-servicename, TNL- callnameShow PPP
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