Black Box LRU4240 - Manual (Page 214)

202 SALES: 0870 90 10 750 Dual Trunk E1 Router User’s Guide
Dual Trunk E1 Router
ospfd# show memory ospf
Related Commands
show memory all, show memory lib
summary-address
Use the summary-address command to summarize or suppress external routes with the specified address range.
Command Syntax
summary-address A.B.C.D/M (not-advertise)(tag <0-4294967295>)
A.B.C.D/M = The range of addresses given as IPv4 starting address and a mask indicating the range.
not-advertise Suppresses external routes.
tag <0-4294967295> The default tag value is 0.
Command Mode
Router mode
Usage
An address range is a pairing of an address and a mask that is almost the same as IP network number. For example, if the specified
address range is 192.168.0.0/255.255.240.0, it matches: 192.168.1.0/24, 192.168.4.0/22, 192.168.8.128/25 and so on.
Redistributing routes from other protocols into OSPF requires the router to advertise each route individually in an external LSA.
Use summary address command to advertise one summary route for all redistributed routes covered by a specified network address
and mask. This helps decrease the size of the OSPF link state database.
Examples
The following example uses the summary-address command to aggregate external LSAs that match the network
172.16.0.0/24 and assign a Tag value of 3.
ospfd# configure terminal
ospfd(config)# router ospf 100
ospfd(config-router)# summary-address 172.16.0.0/16 tag 3
Related Commands
timers spf
Use the timers spf command to adjust route-calculation timers.
Use the no parameter of this command to return to the default timer values.
Command Syntax
timers spf SPF-DELAY spf-holdtime
no timers spf SPF-DELAY SPF-HOLDTIME
SPF-DELAY= <0-4294967295> Specifies the delay between receiving a change to SPF calculation.The
default spf-delay value is 5 seconds
SPF-HOLDTIME= <0-4294967295> Specifies hold time between consecutive SPF calculations. The default
spf-holdtime value is 10 seconds.
Command Mode
Router mode
Usage
The timer spf command configures the delay time between the receipt of a topology change and the calculation of the
Shortest Path First (SPF). This command also configure the hold time between two consecutive SPF calculations.
Examples
timers spf 67295 7295
Related Commands