Table of Contents
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Chapter 1
Broadband Aggregation and Leased-Line Overview
Figure 1-19
CE1
You can set load balancing to work per-destination or per-packet. For per-destination load balancing, the
packet arrives at the core router and the hash value is computed based on the source IP address,
destination IP address, and router ID. The PXF has a proprietary algorithm to select a path based on the
number of total paths available.
Per-packet load balancing allows data traffic to be evenly distributed in an IP network over multiple equal-cost
connections. Per-packet load balancing uses round-robin techniques to select the output path without basing
the choice on the packet content.
Multiple Ingress and Multiple Egress Provider Edge Applications
Figure 1-20
load balance is eight IGP paths multiplied by eight iBGP paths for a total of 64 possible unique paths.
The Cisco 10000 series router supports eight unique paths. The
Provider Edge Applications" section on page 1-14
Figure 1-20
CE1
New Features, Enhancements, and Changes
The following sections describe features that are new, enhanced, or changed for the specified Cisco IOS
software releases:
•
•
OL-2226-23
Single Ingress and Two Egress PE Load Balancing
PE1
shows multiple IGP paths from PE to PE for iBGP paths into the PE2 router. The theoretical
Multiple Ingress and Multiple Egress PE Load Balancing
PE1
New Features in Cisco IOS Release 12.2(33)XNE3, page 1-16
New Features in Cisco IOS Release 12.2(33)XNE, page 1-16
P1
P2
describes the path selection for this model.
P1
P2
PE2
P3
PE3
Cisco 10000 Series Router Software Configuration Guide
New Features, Enhancements, and Changes
PE1
CE2
PE3
"Single Ingress and Single Egress
CE2
Dest prefix
10.1.1.1
20.1.1.1
Dest prefix
10.1.1.1
1-15
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Table of Contents
Troubleshooting
