Allied Telesis 86251-08 manual To change these settings, use one of the commands

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Patch 86251-08 For Rapier Series Switches

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routers on the same link. By default the minimum is 450 seconds (7.5 minutes), and the maximum is 600 seconds (10 minutes).

Preference Level The preference level is the preference of the advertised address as a default router address relative to other router addresses on the same subnet. By default, all routers and layer 3 switches have the same preference level, zero

(0). While it is entered as a decimal in the range -2147483648..2147483647, it is encoded in router advertisements as a twos-complement hex integer in the range 0x8000000 to 0x7fffffff. A higher PREFERENCELEVEL is preferred over a lower value.

Lifetime The lifetime of a router advertisement is how long the information in the advertisement is valid. By default, the lifetime of all advertisements is 1800 seconds (30 minutes).

Configuration By default, the router does not send router advertisements.

Procedure

To configure the router to send router advertisements:

1.Set the physical interface to advertise.

For each physical interface that is to send advertisements, add the interface. In most cases the default advertising parameters will work well, but you can change them if required. By default, the router sends router advertisements every 7.5 to 10 minutes, with a lifetime of 30 minutes. These settings are likely to work well in most situations, and will not cause a large amount of extra traffic, even if there are several routers on the LAN. If you change these settings, keep these proportions:

LIFETIME=3 x MAXADVERTISEMENTINTERVAL

MINADVERTISEMENTINTERVAL=0.75 x MAXADVERTISEMENTINTERVAL

To change these settings, use one of the commands:

ADD IP ADVERTISE INTERFACE=interface

[ADVERTISEMENTADDRESS={ALLLIMITED}] [MAXADVERTISEMENTINTERVAL=4..1800] [MINADVERTISEMENTINTERVAL=3..MAXADVERTISEMENTINTERVAL] [LIFETIME=MAXADVERTISEMENTINTERVAL..9000]

SET IP ADVERTISE INTERFACE=interface

[ADVERTISEMENTADDRESS={ALLLIMITED}] [MAXADVERTISEMENTINTERVAL=4..1800] [MINADVERTISEMENTINTERVAL=3..MAXADVERTISEMENTINTERVAL] [LIFETIME=MAXADVERTISEMENTINTERVAL..9000]

2.Stop advertising on other logical interfaces.

By default, logical interfaces are set to advertise if their physical interface is set to advertise. If the physical interface has more than one logical interface (IP multihoming), and you only want some of them to advertise, set the other logical interfaces not to advertise, using one of the commands:

ADD IP INTERFACE=interface IPADDRESS={ipaddDHCP}

ADVERTISE=NO [other-ip-parameters]

SET IP INTERFACE=interface ADVERTISE=NO [other-ip-

parameters]

3.Set preference levels.

By default, every logical interface has the same preference for becoming a default router (mid range, 0). To give a logical interface a higher preference, increase the PREFERENCELEVEL. To give it a lower preference, decrease

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

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Page 48 Page 50
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 ETH, IPG, IPv6, IPX Level PCR Module OSPF, IPG 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 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 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 Module IPSEC, Ikmp Level PCR 03371 Module Dhcp 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 Module PCI Level PCR 03153 Module ACC 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 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 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 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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