7210 SAS-M, T, R6, R12, Mxp, Sx, S Basic System
Configuration Guide
System Management
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The no form disables LDP ECMP (by allocating zero resources to it) and the system installs
only a single next-hop for every LDP FEC.
The user can change the value of resources allocated towards IP ECMP routes and LDP
ECMP FECs without requiring a reboot of the node as long as the following conditions are
met. The configure system resource-profile router ldp-ecmp command cannot be
modified until the value of the configure router ecmp command is set to 1. It is similar to the
behavior available for the configure system resource-profile router ecmp command. The
value cannot be changed until the value of the configure router ecmp command is set to 1.
Default no ldp-ecmp
Parameters percent-value — Specifies the percentage of ECMP hardware resources to allocate to
LDP ECMP. The rest is allocated towards IP ECMP.
Values 0 to 100
max-ip-subnets
Syntax max-ip-subnets number
no max-ip-subnets
Context configure>system>resource-profile>router
configure>system>global-res-profile>router
Platforms Supported on all 7210 SAS platforms as described in this document
Description
This command configures the number of directly connected IP interfaces and subnets (both
IPv4 and IPv6) the user plans to use on the node, so that only the requisite number of entries
in the L3 forwarding table are allocated. On the 7210 SAS platforms, the hardware L3
forwarding table (that is, the IP IFB) stores the IP routes (both IPv4 and IPv6) received from
routing peers and also stores the IP address prefix for the directly connected interfaces. The
rest are available for use by IP routes received from peers.
Note: On 7210 SAS-R6 and 7210 SAS-R12, it is a system wide limit, applicable to all IMMs.
If the user changes this value dynamically, the system adjusts the usage among IP and LDP
ECMP as per the configuration.
Note: The configure>system>resource-profile>router context is supported on the
7210 SAS-M, 7210 SAS-T, 7210 SAS-Mxp, 7210 SAS-Sx/S 1/10GE: standalone, and
7210 SAS-Sx 10/100GE.
The configure>system>global-res-profile>router context is supported on the
7210 SAS-R6, 7210 SAS-R12, and 7210 SAS-Sx/S 1/10GE: standalone-VC.
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