Foundry Networks Switch and Router Installation And Configuration Manual page 454

Foundry Switch and Router Installation and Configuration Guide
Table 15.1: IP Global Parameters – Layer 3 Switches (Continued)
Parameter Description
Maximum The maximum number of hops away a BootP server
BootP relay can be located from a router and still be used by the
hops router's clients for network booting.
Domain name A domain name (example: foundry.router.com) you
for Domain can use in place of an IP address for certain
Name Server operations such as IP pings, trace routes, and Telnet
(DNS) resolver management connections to the router.
DNS default A list of gateways attached to the router through
gateway which clients attached to the router can reach DNSs.
addresses
IP unicast cache The amount of available IP cache that is set aside for
performance IP unicast entries. When the router caches unicast
mode forwarding entries, the cached entries provide an
optimal path through the router because the router
CPU does not need to process the packets for
forwarding. Once a packet is processed, the
forwarding information is placed in the cache for
reuse.
Chassis devices provide an optional high-
performance mode for allocating additional cache
space for unicast forwarding entries. Use this option
when the router is handling a very large number of
unicast flows (source plus destination pairs) and you
want to ensure that more flows can remain in the
cache at one time.
IP load sharing A Foundry feature that enables the router to balance
traffic to a specific destination across multiple equal-
cost paths.
Load sharing uses a simple round-robin mechanism
and is based on destination address.
Note: Load sharing is sometimes called Equal Cost
Multi Path (ECMP).
IP load sharing A feature on Chassis devices that increases the
aggregation capacity of the load sharing cache by aggregating
destination addresses into networks. When IP load
sharing aggregation is enabled, each cache entry is
an aggregate network for multiple destination hosts.
If IP load sharing aggregation not enabled, the device
creates a separate load sharing cache entry for each
destination host address.
Note: Load sharing aggregation is not available on
Stackable devices. Stackable devices cache load
sharing entries based on destination host addresses.
Maximum IP The maximum number of equal-cost paths across
load sharing which the Layer 3 Switch is allowed to distribute
paths traffic.
15 - 12
Default See page...
Four 15-75
None configured 15-23
None configured 15-23
Standard 15-64
Enabled 15-51
On Chassis devices, 15-61
aggregated by network
On Stackable devices,
single host entries
Four 15-62
December 2000