Cisco Cisco IOS Software Release 12.0(22)S
MPLS Traffic Engineering (TE)—Scalability Enhancements
mpls traffic-eng scanner
14
Cisco IOS Releases: Multiple Releases (see the Feature Information Table)
mpls traffic-eng scanner
To specify how often Intermediate System-to-Intermediate System (IS-IS) extracts traffic engineering
type, length, and value (TLVs) from flagged label-switched path (LSPs) and passes them to the traffic
engineering topology database, and the maximum number of LSPs that the router can process
immediately, use the mpls traffic-eng scanner command router IS-IS configuration subcommand. To
disable this feature, use the no form of this command.
type, length, and value (TLVs) from flagged label-switched path (LSPs) and passes them to the traffic
engineering topology database, and the maximum number of LSPs that the router can process
immediately, use the mpls traffic-eng scanner command router IS-IS configuration subcommand. To
disable this feature, use the no form of this command.
mpls traffic-eng scanner [interval sec] [max-flash LSPs]
no mpls traffic-eng scanner
Syntax Description
Defaults
The default interval is 5 seconds.
The default max-flash value is 15 LSPs.
The first 15 LSPs are sent without a delay into the traffic engineering database. If more LSPs are
received, the default delay of 5 seconds applies.
If you specify the no form of this command, there is a delay of 5 seconds before IS-IS scans its database
and passes traffic engineering TLVs associated with flagged LSPs to the traffic engineering database.
The default max-flash value is 15 LSPs.
The first 15 LSPs are sent without a delay into the traffic engineering database. If more LSPs are
received, the default delay of 5 seconds applies.
If you specify the no form of this command, there is a delay of 5 seconds before IS-IS scans its database
and passes traffic engineering TLVs associated with flagged LSPs to the traffic engineering database.
Command Modes
Router IS-IS configuration
Command History
Usage Guidelines
When IS-IS receives a new LSP, it inserts it into the IS-IS database. If the LSP contains traffic
engineering TLVs, IS-IS flags the LSPs for transmission to the traffic engineering database. At the
default or user-specified interval, traffic engineering TLVs are extracted and sent to the traffic
engineering database. Users can also specify the maximum number of LSPs that the router can process
immediately. Processing entails checking for traffic engineering TLVs, extracting them, and passing
them to the traffic engineering database. If more than 50 LSPs need to be processed, there is a delay of
5 seconds for subsequent LSPs.
engineering TLVs, IS-IS flags the LSPs for transmission to the traffic engineering database. At the
default or user-specified interval, traffic engineering TLVs are extracted and sent to the traffic
engineering database. Users can also specify the maximum number of LSPs that the router can process
immediately. Processing entails checking for traffic engineering TLVs, extracting them, and passing
them to the traffic engineering database. If more than 50 LSPs need to be processed, there is a delay of
5 seconds for subsequent LSPs.
Examples
In the following example, the router is allowed to process up to 50 IS-IS LSPs without any delay.
Router(isis)# mpls traffic-eng scanner interval 5 max-flash 50
interval seconds
(Optional) Frequency, in seconds, at which IS-IS sends traffic engineering
TLVs into the traffic engineering database. The value can be from 1 to 60.
TLVs into the traffic engineering database. The value can be from 1 to 60.
max-flash LSPs
(Optional) Maximum number of LSPs that the router can process
immediately without incurring a delay. The value can be from 0 to 200.
immediately without incurring a delay. The value can be from 0 to 200.
Release
Modification
12.0(14)ST
This command was introduced.
12.2(11)S
This command was integrated into Cisco IOS Release 12.2(11)S.
12.0(22)S
This command was integrated into Cisco IOS Release 12.0(22)S.
12.2(28)SB
This command was integrated into Cisco IOS Release 12.2(28)SB.