Cisco 2960-48TT Hardware Installation Guide - Page 97
Catalyst 2900 Series XL and, Configuration Guide, LRE-5LL, or - layer 2
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Chapter 3 Troubleshooting Diagnosing Problems Table 3-2 Common Problems and Their Solutions (continued) Symptom Ethernet performance degradation due to excessive network latency. Possible Cause Interleaver introduces extra latency to increase noise margin. Resolution • 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. Note 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. 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. 78-6461-04 Catalyst 2900 Series XL Hardware Installation Guide 3-9