Cisco Bug: CSCun44587 - C4k - Unequal Loadbalancing
Last Modified
Dec 13, 2018
Products (1)
- Cisco Catalyst 4500 Series Switches
Known Affected Releases
15.1(2)SG1.151
Description (partial)
Symptom: Topology :- +-------+ Ten1/1 +---------+ | | Po33 +----------------+ Po23 | | | +--------+Cat4k +--------------+ASR9k | |ASR9k +--------+ +--------------+ | | | +----------------+ Ten1/11 | | | | | | +-------+ +---------+ Conditions: - Observed Ten1/11 interface of Po23 is always over utilized. - Checked with various load balancing algorithm but it didn't make much difference on traffic pattern. - by default EC distribution is srcIP (x) dstIP. if their LDP is the only flow (i.e. from one IP add to just another IP add) there will be no distribution. EC provides statistically good distribution only in case if number of flows is statistically significant.
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