| Asset ID: |
1-72-1917479.1 |
| Update Date: | 2016-02-02 |
| Keywords: | |
Solution Type
Problem Resolution Sure
Solution
1917479.1
:
VSM - VSM5 IP Replication Performance Issue When Cisco ESP-100 Encryption Enabled
| Related Items |
- Sun StorageTek VSM5 System
|
| Related Categories |
- PLA-Support>Sun Systems>TAPE>Virtual Tape>SN-TP: VSM
|
In this Document
Applies to:
Sun StorageTek VSM5 System - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.
Symptoms
VSM5 IP replication performance over WAN drops when enabling Cisco ESP-100 encryption. The performance drop can be from ~35mb/s to 5 mb/s.
Cause
The problem is due to the Cisco ESP-100 router module incorrectly identifying checksums of 0x0000 or 0xffff as invalid causing those packets to be discarded. This packet loss causes a significant loss of replication performance.
Solution
Cisco firmware will need to be upgraded as below:
ASR 1006 Cisco IOS Software Version 15.2(4)S5, RELEASE SOFTWARE , XE Version: 03.07.05.S
Attachments
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