Configuring Equal-Cost Multipath Load Sharing; Hashed Mode; Defining Maximum Paths - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - IP-IPV6-IGP CONFIGURATION GUIDE 2010-10-31 Configuration Manual

tcp resequence-buffers default-connection-maximum

Configuring Equal-Cost Multipath Load Sharing

Hashed Mode

maximum-paths
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Use to define the maximum number of buffers that connections on the current or
specified virtual router can use.
Specify a value of zero (0) to turn off the connection maximum.
Example
host1(config)#tcp resequence-buffers connection-maximum 50
Use the no version to revert the connection maximum value to its default, 10 buffers.
See tcp resequence-buffers connection-maximum
Use to specify the default buffer limit assigned to all TCP connections on a virtual
router unless a specific limit is set for the VR in which the connection is established.
Specify a value of zero (0) buffers to turn off the default limit.
Example
host1(config)#tcp resequence-buffers default-connection-maximum 100
Use the no version to revert the connection maximum value to its default, 10 buffers.
See tcp resequence-buffers default-connection-maximum
Equal-cost multipath (ECMP) sets are formed when the router finds routing table entries
for the same destination with equal cost. The router then balances traffic across these
sets of equal-cost paths by using hashed mode.
Hashed mode uses hashing of source and destination addresses to determine which of
the available paths in the ECMP set to use. Hashed mode is the default ECMP mode of
operation.

Defining Maximum Paths

You can add routing table entries manually (as static routes), or they are formed as
routers discover their neighbors and exchange routing tables (via OSPF, BGP, and other
routing protocols).
The maximum paths command controls the maximum number of parallel routes that
the routing protocol (BGP, IS-IS, OSPF, or RIP) can support.
Use to control the maximum number of parallel routes that the routing protocol
supports.
The maximum number of routes can be in the range 1–16 for BGP, IS-IS, OSPF, or RIP.
Example
host1(config-router)#maximum-paths 2
Chapter 2: Configuring IPv6
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