Allied Telesis 86251-08 manual Same subnet

Page 55

Patch 86251-08 For Rapier Series Switches

SHOW IP ADVERTISE

55

 

Table 10: Parameters displayed in the output of the SHOW IP ADVERTISE

 

 

command. (Continued)

 

 

 

 

 

 

 

Parameter

Meaning

 

 

 

 

 

 

IP Address

An IP address assigned to the interface.

 

 

 

 

 

Advertise

Whether the address for this logical interface should

 

 

be advertised.

 

 

 

 

 

 

Preference Level

The preferability of the address as a default router

 

 

 

address relative to other router addresses on the

 

 

 

same subnet.

 

 

 

 

 

See Also DISABLE IP DISCOVERY

DELETE IP DISCOVERY INTERFACE

ENABLE IP DISCOVERY

ADD IP DISCOVERY INTERFACE

SET IP DISCOVERY INTERFACE

Old Router Discover Before an IP host can send IP packets, it needs the IP address of a router that Process can forward it to its destination. When router advertisements are enabled, the

router multicasts router advertisements periodically on any interfaces that are configured to advertise. When hosts receive these messages, they store them for the specified lifetime. They forward traffic to the IP address of the router with the highest preference level specified in the router advertisement.

When a host first starts up, it may send one, or a small number of router solicitations to prompt a quicker router advertisement, instead of waiting for the next router advertisement to arrive automatically. When the router receives a router solicitation with an IP address, it immediately multicasts an early router advertisement.

For the first few advertisements sent from an interface (up to 3), if the randomly chosen interval is greater than 16 seconds, the router sends the router advertisements at intervals of at most 16 seconds. After these initial transmissions, it sends router advertisements at random intervals between the minimum and maximum intervals that the user configures, to reduce the probability of synchronization with the advertisements from other routers on the same link.

If either an interface, or router advertisements on an interface are disabled, the router sends a final multicast advertisement on the interface with a lifetime field of zero. If some of the IP addresses have advertising disabled, while others continue to advertise, the router sends a router advertisement containing the remaining IP addresses.

The router does not behave as a Router Discovery host to discover other routers on the LAN; it discards any router advertisements that it receives from other routers.

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 BGP Level FeaturesPCR Module IPG Level PCR 03359 Module Core LevelPCR Module FIRE, Utility Level PCR 03684 Module Core LevelPCR Module TTY, User Level PCR Module STP LevelPCR Module Firewall Level PCR Module Isakmp LevelPCR Module Ipsec Level PCR Module SW56 LevelPCR Module Utility Level PCR Module SWI LevelPCR Module IGP Level PCR 31001 Module Dhcp LevelPCR Module BGP Level PCR 31098 Module Dhcp Level PCR 31081 Module VRRP, IP, TCP, TelnetPCR Module File Level PCR Module FFS LevelPCR Module IPG PCR 31106 Module MLD LevelPCR Module IPX2 Level PCR 02414 Module IPV6, SWI, IPG, VlanPCR Module ETH, IPG, IPv6, IPX Level PCR Module OSPF, IPG LevelPCR 03751 Module Mlds Level PCR 03801 Module Mlds Level PCR Module FILE, INSTALL, SCR LevelPCR Module Install Level PCR Module ETH LevelPCR 03843 Module Dhcp Level PCR 03823 Module Vlan LevelPCR Module TTY Level PCR Module IPG, IPV6 LevelPCR 03870 Module SWI, Vlan Level PCR Module DHCP, Telnet LevelPCR Module IP ARP Level PCR Module Switch LevelPCR Module Ikmp Level PCR Module Firewall Network affecting No PCR Module L2TP Level PCR Module Ospf Network affecting NoPCR Module PPP Level PCR Module PRI LevelPCR 03515 Module Dhcp Level PCR Module HTTP, Firewall Level PCR Module BGP, TCP LevelPCR 03547 Module Dhcp Level PCR Module Http Level PCR 03584 Module MLD Level PCR Module FIREWALL, IPG LevelPCR Module Ping Level PCR 03618 Module Dhcp Level PCR 03615 Module Load LevelPCR Module STP, SWI Level PCR 03647 Module Snmp Level PCR 03708 Module Dhcp Level PCR Module PKI LevelPCR 03691 Module Dvmrp Level PCR 03698 Module Dvmrp LevelPCR Module IP Level PCR Module PPP, VJC LevelPCR Module Rsvp Level PCR Module Vrrp LevelFeatures PCR Module IPSEC, Ikmp Level PCR 03371 Module Dhcp LevelPCR Module SSL Level PCR 03429 Module SWI, Vlan Level PCR 03405 Module Stream LevelPCR 03410 Module VLAN, Core Level PCR 03424 Module Dhcp LevelPCR Module FR Level PCR 03436 Module IP, Dhcp LevelPCR Module IPX Level PCR 03443 Module Dhcp LevelPCR 03465 Module Dhcp Level PCR Module BGP, Firewall Level PCR 03492 Module HTTP, Load LevelPCR 03515 Module Dhcp Level PCR 03094 Module STP, Vlan Level PCR 02577 Module IPG, LOG LevelPCR Module GUI Level PCR 03089 Module Core LevelPCR Module Classifier Level PCR 03096 Module Vlan LevelPCR Module PIM, DVMRP, IPG Level PCR 03109 Module LOG LevelPCR Module Port Level PCR Module ETH, IPG LevelPCR Module IPG, SWI Level PCR Module Cure LevelPCR Module PCI Level PCR 03153 Module ACC LevelPCR 03167 Module Dvmrp Level PCR Module User Level PCR Module CORE, FFS, TTY LevelPCR Module FIREWALL, LB Level PCR Module LB LevelPCR 03229 Module Load Level PCR 03205 Module Dhcp LevelPCR Module SWI, IPG, PIM Level PCR 03239 Module QOS LevelPCR 03247 Module MVR Level PCR Module VLAN, IPG Level PCR 03256 Module MLD LevelPCR Module DHCP, Q931, Telnet Level PCR Module IP, SWI Level PCR 03334 Module MVR LevelPCR 03336 Module Core Level PCR 03346 Module Snmp LevelVlan PCR 03370 Module MVR LevelPCR 03388 Module Dhcp Level ADD PPP Create PPP Delete PPP SET PPP Show PPP PCR Module IPV6 Network affecting No PCR 03067 Module Dhcp LevelPCR 03068 Module SWI, QOS Level PCR 03077 Module Core LevelPCR Module IPG, ETH Network affecting No PCR Module SWI Network affecting NoPCR Module IPG Network affecting No PCR Module PCI Network affecting NoPCR Module TM Network affecting No Availability Icmp Router Discovery AdvertisementsPCR Module TELNET, PING, IPV6, Network affecting No PCR Module TCP Network affecting NoRouter Advertisement Messages To change these settings, use one of the commands ADD IP Interface SET IP Interface Disable IP Advertise Enable 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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