PowerScale: SyncIQ Traffic Flowing Through Non-Replication Pool

Summary: Replication traffic flows through nonreplication pool when the flags "Force Interface=No" and "Restrict Target Network=No" are not set,

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Symptoms

When the following flags are not set, replication traffic flows through nonreplication pool in some instances causing congestion and performance issues. 
Force Interface: No
Restrict Target Network: No 

Cause

By default, default route on the routing table is used to determine the interface which traffic ORIGINATEs from.

When the two flags "Force Interface" and "Restrict Target Network" are not set, a routing table is used and traffic is seen on a nonreplication network pool.

Resolution

ACTION PLAN:
  1. Identify the policy to be modified and review whether the options are set correctly.
# isi sync policies view --policy=test | egrep 'Name:|Subnet|Pool|Force|Target:|Restrict'
Example: 
Isilon02-3# isi sync policies view --policy=test | egrep 'Name:|Target:|Subnet|Pool|Force|Restrict'
                                 Name: test
                               Target: target1.local
                        Source Subnet: Subnet1
                          Source Pool: Replication
                      Force Interface: No
              Restrict Target Network: No
  1. Set the flags to restrict traffic to the correct source and target networks and verify the change.
# isi sync policies modify test --force-interface=yes --restrict-target-network=yes
# isi sync policies view --policy=test | egrep 'Name:|Subnet|Pool|Force|Target:|Restrict'

Example:

Isilon02-3# isi sync policies modify test --force_interface=yes --restrict-target-network=yes
Isilon02-3# isi sync policies view --policy=test | egrep 'Name:|Subnet|Pool|Force|Target:|Restrict'
                                 Name: test
                               Target: target1.local
                        Source Subnet: Subnet1
                          Source Pool: Replication
                      Force Interface: Yes
              Restrict Target Network: Yes

Affected Products

Isilon

Products

Isilon, Isilon SyncIQ
Article Properties
Article Number: 000161139
Article Type: Solution
Last Modified: 17 Dec 2025
Version:  5
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