Configuration Guide User guide

1190 FastIron Configuration Guide
53-1002494-02
Modifying and displaying Layer 3 system parameter limits
Brocade(config)#system-max hw-logical-interface 2048
Brocade(config)#system-max hw-ip-next-hop 3072
Brocade(config)#system-max hw-ip-mcast-mll 2048
Brocade(config)#write memory
Brocade(config)#reload
Syntax: system-max hw-ip-next-hop <num>
Syntax: system-max hw-logical-interface <num>
Syntax: system-max hw-ip-mcast-mll <num>
NOTE
The system-max commands are not supported on IPv6 devices. Refer to “FastIron second
generation modules” on page 1190.
The hw-ip-next-hop <num> parameter specifies the maximum number of IP next hops and routes
supported on the device. Note that the maximum number includes unicast next hops and
multicast route entries. Enter a number from 100 through 6144. The default is 2048.
You can define the maximum number of hops on FastIron X Series devices using the hw-ip-next-hop
<num> parameter with the following first generation modules installed:
• SX-FI424F
• SX-FI424C
• SX-FI424P
• SX-FI424HF
• SX-FI42XG
• SX-FI42XGW
If these modules are not installed, then the maximum number of hops is automatically set and is
not configurable.
The hw-logical-interface <num> parameter specifies the number of hardware logical interface pairs
(physical port and VLAN pairs) supported on the device. Enter a number from 0 through 4096.
When this parameter is set to 4096 (the maximum), the limit is not enforced. If you enter a number
less than 4096, the limit is the total number of physical port and VLAN pairs that are IP-enabled in
the system. The default is 4096.
The hw-ip-mcast-mll <num> parameter specifies the maximum number of multicast output
interfaces (clients) supported on the device. If a given source or group has clients in n tagged
VLANs on the router, then n entries are consumed for that source or group entry. Enter a number
from 0 through 4096. The default is 1024.
FastIron second generation modules
FastIron IPv6 models support the same Layer 3 system parameters that use hardware memory as
do FastIron IPv4 models. However, there are some configuration differences between second
generation modules and first generation modules. The differences are as follows:
• Number of IP next hops and IP route entries – 6144 maximum and default value. The system
automatically calculates this value, based on the maximum number of VLANs supported
systemwide.