Cisco Catalyst WS-C2924-XL Hardware Installation Manual page 97

Chapter 3 Troubleshooting
Table 3-2 Common Problems and Their Solutions (continued)
Symptom
Ethernet performance
degradation due to
excessive network
latency.
78-6461-04
Possible Cause
Interleaver introduces extra latency to
increase noise margin.
Resolution
•
•
•
Note
All other profiles, public and
private, have the interleaver
feature enabled and the LL feature
disabled. The interleaver feature
provides maximum protection
against small interruptions on the
LRE link but delays data
transmission. For more
information about the LRE profiles,
For more information, refer to the
Catalyst 2900 Series XL and
Catalyst 3500 Series XL Software
Configuration Guide.
Catalyst 2900 Series XL Hardware Installation Guide
Diagnosing Problems
Adjust upper-layer network
protocols to allow for high
latency.
Change to a profile with a
higher data rate to increase
link bandwidth. This
decreases the noise margin.
Select a low-latency (LL)
LRE profile, such as
LRE-5LL, LRE-10LL, or
LRE-15LL.
Use the low-latency (LL)
private profiles with care.
The LL profiles have the
LL feature enabled and
the interleaver feature
disabled. The LL feature
does not delay data
transmission, but it makes
data more susceptible to
interruptions on the LRE
link.
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