Brocade Multi-Service IronWare Routing Configuration Guide (Supporting R05.6.00) - Manual (Page 295)

Multi-Service IronWare Routing Configuration Guide 267
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Configuring IPv4 address family route parameters
To restore incremental shortcut LSP SPF optimization, use the no form of this command.
Configuring IPv4 address family route parameters
This section describes how to modify the IS-IS parameters for the IS-IS IPv4 unicast address family.
To enter the IPv4 unicast address family, refer to the
“Address family configuration level” on
page 254.
Changing the metric style
The metric style specifies the Types, Lengths, and Values (TLVs) an IS-IS LSP can have. The TLVs
specify the types of data, the maximum length of the data, and the valid values for the data. One of
the types of data the TLVs control is a route’s default-metric. By default, the Brocade device uses
the standard IS-IS TLVs, which allows metric values from 1 – 63. The default metric style is called
“narrow.” You can increase the range of metric values supported by the Brocade device by
changing the metric style to wide. The wide metric style allows metric values in the range 1 –
16777215.
To change the metric style to wide, enter the following command.
Brocade(config-isis-router-ipv4)# metric-style wide
This command changes the metric style for both Level-1 and Level-2.
Syntax: [no] metric-style wide [level-1 | level-2]
The level-1 | level-2 parameter specifies the levels to which the change applies. If not specified, the
changes are applied to both levels.
Changing the maximum number of load sharing paths
By default, IPv4 IS-IS can calculate and install four equal-cost paths into the IPv4 forwarding table.
You can change the number of paths IPv4 IS-IS can calculate and install in the IPv4 forwarding
table to a value from 1 to 32. If you change the number of paths to one, the Brocade device does
not load share multiple route paths learned from IPv4 IS-IS.
NOTE
The maximum number of paths supported by the BR-MLX-10Gx24-DM module is 16.
For example, to change the number of paths IPv4 IS-IS can calculate and install in the IPv4
forwarding table to three, enter the following command at the IPv4 IS-IS unicast address family
configuration level.
Brocade(config-isis-router-ipv4u)# maximum-paths 4
Syntax: [no] maximum-paths number
The number parameter specifies the number of paths IPv4 IS-IS can calculate and install in the
IPv4 forwarding table. The number value range is 2 to 32.
NOTE
The value specified in number is limited by the IP load-sharing value specified in the ip load-sharing
command.