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IamDaMayor
Beginner

Cisco Catalyst 6504-E Switch

We have performance issues between storage devices (IBM v9000) that terminate of the below 10GB interfaces.
This is part of our DR solution on this system. The slightest delay will place RISK on the business if this is not up to date

 

 TE1/3/2 Redditch
 TE1/3/4 Redditch
 TE2/3/2 Redditch
 TE2/3/4 Redditch

 TE1/3/2 Woking
 TE1/3/4 Woking
 TE2/3/2 Woking
 TE2/3/4 Woking
These devices\interfaces are in VRF's and the details are below:
o
 WOK_VSS_WAN#

 ip vrf HEM9A/HEMTST_v9000
 rd 172.29.116.1:3

 interface Vlan811
 description HEM9A/HEMTST VRF Replication
 mtu 9216
 ip vrf forwarding HEM9A/HEMTST_v9000
 ip address 172.18.251.85 255.255.255.248
 ip flow monitor MONITOR1 input

 interface TenGigabitEthernet1/3/2
 description HEM9A v9000 Replication
 switchport
 switchport mode access
 switchport access vlan 811
 mtu 9216

 interface TenGigabitEthernet2/3/2
 description HEMTST v9000 Replication
 switchport
 switchport mode access
 switchport access vlan 811
 mtu 9216

 RED_VSS_WAN#

 ip vrf HEM9A/HEMTST_v9000
 rd 172.29.116.1:3

 interface Vlan811
 description HEM9A/HEMTST VRF Replication
 mtu 9216
 ip vrf forwarding HEM9A/HEMTST_v9000
 ip address 172.18.251.86 255.255.255.248
 ip flow monitor MONITOR1 input

 interface TenGigabitEthernet1/3/2
 description HEM9A v9000 Replication
 switchport
 switchport mode access
 switchport access vlan 811
 mtu 9216

 interface TenGigabitEthernet2/3/2
 description HEMTST v9000 Replication
 switchport
 switchport mode access
 switchport access vlan 811
 mtu 9216

 

We have our 2x 10G DCI links between Data centres. These ports are Te1/1/5, Te2/1/5. These are part of an etherchannel (L2). From some reason we are seeing a maximum throughput of 1-1.2Gb, but never more than this. At this time we would also see high retransmits. However right now we have nothing more than 300Mb. The system is configured to use anywhere up to 10Gb.

 

Need to verify that there are no visible throughput issues either from the ports themselves for the whole switch itself (back plane etc), that could cause the system to slow this much - i.e throughput delays or issues.

 

We have other replication data that traverses the DCI links with no issues. However the new storage solution will send in a high volumes of data continuously and may also be impacted by millisecond issues. Something else to bear in mind as part of your investigations

 

 

 

3 REPLIES 3
balaji.bandi
VIP Master

At this moment i can only think of couple test required to test.

 

Is the link was working, and  suddenly you see performance issue, or it was the issue from the beginning (just to understand the problem)

1. have you raised ticket with Service provider to test end to end link ?

2.Since it is L2 Etherchnnel, for testing you can un-bundle one test through put both side using Iperf, one at a time, so you know the lin work perfectly.

 

BB

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Thanks for the feedback

 

i have up loaded the show tech output if this would make a difference in troubleshooting the issue

Thanks for the feedback

 

I have uploaded the show tech output if it will assist in troubleshooting the issue