Qtech QSW-3900-48-SFP-DC [117/245] Configure packet authentication key

Qtech QSW-3900-48-SFP-DC [117/245] Configure packet authentication key
QTECH Software Configuration Manual
8-116
8.2.12 Configure packet authentication key
OSPF supports simple or MD5 encryption authentication between neighbour routers.
Configure it in interface configuration mode :
Configure interface simple authentication key
ip ospf authentication-key password
Cancel interface simple authentication key
no ip ospf authentication-key
Configure interface MD5 authentication key
ip ospf message-digest-key key-id md5 key
Cancel interface MD5 authentication key
no ip ospf message-digest-key
By default, non-authentication is configured.
password is a character string of 18 bytes;
key-id is intergeral number between 0255
key is a character string of 116 bytes.
Example :
!Configure simple authentication key of VLAN interface 3 to be abc123
QTECH(config-if-vlanInterface-3)#ip ospf authentication-key abc123
8.2.13 Configure STUB area of OSPF
Stub area is special LSA area. ABR in stub area doesnt transmit the router outside of autonomy system. The
scale of routing table and transmission number of routing packet in these areas will greatly reduced.
Stub area is optional configuration attribution, but not every area can suit the configuration condition.
Generally, stub area locates in the edge of autonomy system which is the non-backbone area with one ABR; or there
are many ABRs, but no virtual connection is configured between ABRs.
To guarantee the reachable of router out of autonomy system, ABR in this area will generate a default route
(0.0.0.0) and distribute it to other non-ABR router in this area.
Pay attention to followings when configuring Stub area :
· Backbone area cannot configure to be Stub area and virtual connection cannot pass through Stub area.
· If configuring an area to be Stub area, all routers in this area must configure this attribution.
· There cannot be ASBR in Stub area, that is, external router cannot transmit in this area.
Configure it in OSPF protocol configuration mode :
Configure an area to be Stub area
area area-id stub [ no-summery ]
Cancel configured Stub area
no area area-id stub
Configure the cost to default router of Stub area
area area-id default-cost cost
Cancel the cost to default router of Stub area
no area area-id default-cost
By default, Stub area is not configured; the cost to default router of Stub area is 1.
There are two configuration command in STUB area : area stub and area default-cost. All routers
connected to STUB area must use area stub command to configure to be STUB attribution. Command area
default-cost only be effective in ABR configuration. This command can specify the cost for ABR to send default
routing to STUB area.
For reducing the number of Link State Advertisement (LSA) sent to STUB,configure no-summary in ABR to forbid
ABR to send summary LSAsLSA type 3to STUB area.
Example :
!Configure area 1.1.1.1 to be stub area and configure the cost to default router of Stub area to be 10
QTECH(config-router-ospf)#area 1.1.1.1 stub
QTECH(config-router-ospf)#area 1.1.1.1 default-cost 10

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