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Raisecom
ISCOM2600G-HI (A) Series Configuration Guide
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Configuring OSPF passive interface
To prevent some OSPF routing information from being obtained by some routers on the
network, you can configure the interface to an OSFP passive interface to disable the interface
to send OSPF packets.
Configure the OSPF passive interface for the ISCOM2600G-HI series switch as below.
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2
3
Configuring MTU ignorance
By default, the value of MTU domain in the DD packet is the MTU value of the interface,
which sends the DD packet. Default MTU values may vary on devices. In addition, if the
MTU value of the DD packet is greater than the one of the interface, the DD packet will be
discarded. To ensure receiving the DD packet properly, enable MTU ignorance to configure
the MTU value to 0. Therefore, all devices can receive the DD packet.
Configure MTU ignorance for the ISCOM2600G-HI series switch as below.
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Step
Command
Raisecom#config
Raisecom(config)#router
process-id
ospf
router-id
]
Raisecom(config-router-
ospf)#timers spf
hold-time
Step
Raisecom#config
Raisecom(config)#interface
interface-type interface-number
Raisecom(config-
gigaethernet1/1/port)#ip ospf
passive-interface enable
Step
Command
Raisecom#config
Raisecom(config)#interface
interface-type interface-
number
Raisecom(config-
gigaethernet1/1/port)#ip
ospf mtu-ignore enable
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Enter global configuration mode.
Enable an OSPF process and enter OSPF
[ router-id
configuration mode.
Configure the calculation delay and
delay-time
interval of the OSPF route.
By default, the calculation delay is 2s and
the calculation interval is 3s.
Command
Description
Description
Enter global configuration mode.
Enter interface configuration mode.
Enable passive interface on the
OSPF interface.
By default, it is disabled.
Description
Enter global configuration mode.
Enter interface configuration mode.
Enable MTU ignorance on the IP interface.
By default, MTU ignorance is disabled on
the IP interface to check MTU of the
OSPF Hello packet.
5 IP services
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