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Step Description Command Keys
14 Create OSFP area and switch to the
scope configuration mode.
esr(config-ospf)# area <AREA_ID> <AREA_ID> – area identifier,
defined as AAA.BBB.CCC.DDD
where each part takes values
of [0..255].
esr(config-ipv6-ospf)# area
<AREA_ID>
15 Enable subnets advertising. esr(config-ospf-area)# network
<ADDR/LEN>
<ADDR/LEN> – subnet
address, set in the following
format:
AAA.BBB.CCC.DDD/NN –
network IP address with prefix
mask, where AAA-DDD take
values of [0..255] and EE takes
values of [1..32].
esr(config-ipv6-ospf-area)#
network <IPV6-ADDR/LEN>
<IPV6-ADDR/LEN> – IPv6
address and mask of a subnet,
defined as X:X:X:X::X/EE where
each X part takes values in
hexadecimal format [0..FFFF]
and EE takes values of [1..128].
16 Specify the area type esr(config-ospf-area)# area-type
<TYPE> [ no-summary ]
<TYPE> – area type:
stub – sets stub value
(stub area);
no-summary – command
in conjunction with the
'stub' parameter forms
the 'totallystubby' area
(only the default route is
used to transfer
information outside the
area).
nssa – sets nssa value
(NSSA area);
no-summary – command
in conjunction with the
'nssa' parameter forms
the 'totallynssa' area (by
default the route is
generated as an inter-
place one).
esr(config-ipv6-ospf-area)# area-
type <TYPE> [ no-summary ]
17 Enable the default route generation for
NSSA area and its advertising as NSSA-
LSA.
esr(config-ospf-area)# default-
information-originate
esr(config-ipv6-ospf-area)#
default-information-originate
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