Foundry Switch and Router Installation and Configuration Guide
15 - 12 December 2000
Maximum
BootP relay
hops
The maximum number of hops away a BootP server
can be located from a router and still be used by the
router’s clients for network booting.
Four 15-75
Domain name
for Domain
Name Server
(DNS) resolver
A domain name (example: foundry.router.com) you
can use in place of an IP address for certain
operations such as IP pings, trace routes, and Telnet
management connections to the router.
None configured 15-23
DNS default
gateway
addresses
A list of gateways attached to the router through
which clients attached to the router can reach DNSs.
None configured 15-23
IP unicast cache
performance
mode
The amount of available IP cache that is set aside for
IP unicast entries. When the router caches unicast
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.
Standard 15-64
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).
Enabled 15-51
IP load sharing
aggregation
A feature on Chassis devices that increases the
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.
On Chassis devices,
aggregated by network
On Stackable devices,
single host entries
15-61
Maximum IP
load sharing
paths
The maximum number of equal-cost paths across
which the Layer 3 Switch is allowed to distribute
traffic.
Four 15-62
Table 15.1: IP Global Parameters – Layer 3 Switches (Continued)
Parameter Description Default See page...
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