Servers connected to Nexus 5548 only getting 200 Mbps of throughput

Servers connected to NExus 5k were only getting 100 Mbps of throughput. So I disabled Flow control recieve on all the ports. After this we are getting 200 Mbps of speed. The servers are connected throuh 10 gig port. Could you guys please suggest why the throguhput is still low? Atleast we should get 1Gbps of thrpoughput.

Hi Adam,
I think we probably need a little more information to go on. Can you answer the following?
What type of servers and NICs?
What OS are you running on the servers?
What cables do you have from the servers to the switch?
Are the two servers in the same subnet or is the traffic between them routed?
If routed, is that in the Nexus 5548 or some other router?
How are you testing throughput?
Presumably you're not seeing any errors on the switch ports that the servers are connected to?
Regards

Similar Messages

Very low transfer speed issue on SUN4270 M2 server connected with nexus 5548 switch on 10GB fiber.

                   Hi,
I have 2 SUN 4270 M2 servers connected with Nexus 5548 switch over 10Gb fiber card. I am getting performance of just 60 MB per second while transfer of 5Gb file across 2 servers. The similar speed i use to get on 1Gb network also. Please suggest how to improve the tranfer speed. On servers, ports ET4 and ETH5 are bonded in bond0 with mode=1. The server envrionment will be used for OVS 2.2.2.
Below are the details of network configuration on server. I quick help will be highly appriciated--
[root@host1 network-scripts]# ifconfig eth4
eth4      Link encap:Ethernet HWaddr 90:E2:BA:0E:22:4C
          UP BROADCAST RUNNING SLAVE MULTICAST MTU:9000 Metric:1
          RX packets:5648589 errors:215 dropped:0 overruns:0 frame:215
          TX packets:3741680 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:2492781394 (2.3 GiB) TX bytes:3911207623 (3.6 GiB)
[root@host1 network-scripts]# ifconfig eth5
eth5      Link encap:Ethernet HWaddr 90:E2:BA:0E:22:4C
          UP BROADCAST RUNNING SLAVE MULTICAST MTU:9000 Metric:1
          RX packets:52961 errors:215 dropped:0 overruns:0 frame:215
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:3916644 (3.7 MiB) TX bytes:0 (0.0 b)
[root@host1 network-scripts]# ethtool eth4
Settings for eth4:
        Supported ports: [ FIBRE ]
        Supported link modes:   1000baseT/Full
        Supports auto-negotiation: Yes
        Advertised link modes: 1000baseT/Full
                                10000baseT/Full
        Advertised auto-negotiation: Yes
        Speed: 10000Mb/s
        Duplex: Full
        Port: FIBRE
        PHYAD: 0
        Transceiver: external
        Auto-negotiation: on
        Supports Wake-on: d
        Wake-on: d
        Current message level: 0x00000007 (7)
        Link detected: yes
[root@host1 network-scripts]# ethtool eth5
Settings for eth5:
        Supported ports: [ FIBRE ]
        Supported link modes:   1000baseT/Full
        Supports auto-negotiation: Yes
        Advertised link modes: 1000baseT/Full
                                10000baseT/Full
        Advertised auto-negotiation: Yes
        Speed: 10000Mb/s
        Duplex: Full
        Port: FIBRE
        PHYAD: 0
        Transceiver: external
        Auto-negotiation: on
        Supports Wake-on: d
        Wake-on: d
        Current message level: 0x00000007 (7)
        Link detected: yes
[root@host1 network-scripts]#
[root@host1 network-scripts]# cat /proc/net/bonding/bond0
Ethernet Channel Bonding Driver: v3.2.4 (January 28, 2008)
Bonding Mode: fault-tolerance (active-backup)
Primary Slave: None
Currently Active Slave: eth4
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0
Slave Interface: eth4
MII Status: up
Link Failure Count: 0
Permanent HW addr: 90:e2:ba:0e:22:4c
Slave Interface: eth5
MII Status: up
Link Failure Count: 0
Permanent HW addr: 90:e2:ba:0e:22:4d
[root@host1 network-scripts]# modinfo ixgbe | grep ver
filename:       /lib/modules/2.6.18-128.2.1.4.44.el5xen/kernel/drivers/net/ixgbe/ixgbe.ko
version:        3.9.17-NAPI
description:    Intel(R) 10 Gigabit PCI Express Network Driver
srcversion:     31C6EB13C4FA6749DF3BDF5
vermagic:       2.6.18-128.2.1.4.44.el5xen SMP mod_unload Xen 686 REGPARM 4KSTACKS gcc-4.1
[root@host1 network-scripts]#brctl show
bridge name     bridge id               STP enabled     interfaces
vlan301         8000.90e2ba0e224c       no              bond0.301
vlan302         8000.90e2ba0e224c       no              vif1.0
                                                        bond0.302
vlan303         8000.90e2ba0e224c       no              bond0.303
vlan304         8000.90e2ba0e224c       no              bond0.304
[root@host2 test]# ifconfig eth5
eth5      Link encap:Ethernet HWaddr 90:E2:BA:0F:C3:15
          UP BROADCAST RUNNING SLAVE MULTICAST MTU:9000 Metric:1
          RX packets:4416730 errors:215 dropped:0 overruns:0 frame:215
          TX packets:2617152 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:190977431 (182.1 MiB) TX bytes:3114347186 (2.9 GiB)
[root@host2 network-scripts]# ifconfig eth4
eth4      Link encap:Ethernet HWaddr 90:E2:BA:0F:C3:15
          UP BROADCAST RUNNING SLAVE MULTICAST MTU:9000 Metric:1
          RX packets:28616 errors:3 dropped:0 overruns:0 frame:3
          TX packets:424 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:4982317 (4.7 MiB) TX bytes:80029 (78.1 KiB)
[root@host2 test]#
[root@host2 network-scripts]# ethtool eth4
Settings for eth4:
        Supported ports: [ FIBRE ]
        Supported link modes:   1000baseT/Full
        Supports auto-negotiation: Yes
        Advertised link modes: 1000baseT/Full
                                10000baseT/Full
        Advertised auto-negotiation: Yes
        Speed: 10000Mb/s
        Duplex: Full
        Port: FIBRE
        PHYAD: 0
        Transceiver: external
        Auto-negotiation: on
        Supports Wake-on: d
        Wake-on: d
        Current message level: 0x00000007 (7)
        Link detected: yes
[root@host2 test]# ethtool eth5
Settings for eth5:
        Supported ports: [ FIBRE ]
        Supported link modes:   1000baseT/Full
        Supports auto-negotiation: Yes
        Advertised link modes: 1000baseT/Full
                                10000baseT/Full
        Advertised auto-negotiation: Yes
        Speed: 10000Mb/s
        Duplex: Full
        Port: FIBRE
        PHYAD: 0
        Transceiver: external
        Auto-negotiation: on
        Supports Wake-on: d
        Wake-on: d
        Current message level: 0x00000007 (7)
        Link detected: yes
[root@host2 network-scripts]# cat /proc/net/bonding/bond0
Ethernet Channel Bonding Driver: v3.2.4 (January 28, 2008)
Bonding Mode: fault-tolerance (active-backup)
Primary Slave: None
Currently Active Slave: eth5
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0
Slave Interface: eth5
MII Status: up
Link Failure Count: 0
Permanent HW addr: 90:e2:ba:0f:c3:14
Slave Interface: eth4
MII Status: up
Link Failure Count: 0
Permanent HW addr: 90:e2:ba:0f:c3:15
[root@host2 network-scripts]# modinfo ixgbe | grep ver
filename:       /lib/modules/2.6.18-128.2.1.4.44.el5xen/kernel/drivers/net/ixgbe/ixgbe.ko
version:        3.9.17-NAPI
description:    Intel(R) 10 Gigabit PCI Express Network Driver
srcversion:     31C6EB13C4FA6749DF3BDF5
vermagic:       2.6.18-128.2.1.4.44.el5xen SMP mod_unload Xen 686 REGPARM 4KSTACKS gcc-4.1
[root@host2 network-scripts]#brctl show
bridge name     bridge id               STP enabled     interfaces
vlan301         8000.90e2ba0fc315       no              bond0.301
vlan302         8000.90e2ba0fc315       no              bond0.302
vlan303         8000.90e2ba0fc315       no              bond0.303
vlan304         8000.90e2ba0fc315       no              vif1.0
       bond0.304
Thanks....
Jay

Hi,
Thanks for reply..but the RX errors count is keep on increasing and the transfer speed between 2 servers are max 60MB/ps on 10GB FC card. Even on storage also, i am getting the same speed when i try to transfer data from server to storage on 10GB FC card. Servers and storage are connected through Nexus 5548 switch.
#ifconfig eth5
eth5      Link encap:Ethernet HWaddr 90:E2:BA:0E:22:4C
          UP BROADCAST RUNNING SLAVE MULTICAST MTU:9000 Metric:1
          RX packets:21187303 errors:1330 dropped:0 overruns:0 frame:1330
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JP

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How come I can only get 200 of my 700 songs to show on my display in my new truck?

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and/or
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P.S. Is it possible my speed will increase over the next few days? Since the Post Code speed test said up to 20 Mbps, I'm assuming that's as high as it can go...

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3. Firmware version:
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Thanks in advance..
Regards,
Ajith

Lo,
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HTH

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W520 connects at 5 GHz only at 54 mbps. Any idea?

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Nexus 5548 and Define static route to forward traffic to Catalyst 4500

Dear Experts,
Need your technical assistance for the Static routing in between Nexus 5548 and Catalyst 4500.
Further I connected both Nexus 5548 with Catalyst 4500 as individual trunk ports because there is HSRP on Catalyst 4500. So I just took 1 port from each nexus 5548, make it trunk with the Core Switch (Also make trunk from each Switch each port). Change the speed on Nexus to 1000 because other side on Catalyst 4500 line card is 1G RJ45.
*Here is the Config on Nexus 5548 to make port a Trunk:*
N5548-A/ N5548-B
Interface Ethernet1/3
Switchport mode trunk
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Added the static route on both nexus for Core HSRP IP: *ip route 0.0.0.0/0 10.10.150.39 (Virtual HSRP IP )*
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Pleas suggest

Hello,
Please see attached config for both Nexus 5548. I dont have Catalyst 4500 but below is simple config what I applied:
Both Catalyst 4500
interface gig 3/48
switchport mode trunk
switchport trunk encap dot1q
On Nexus 5548 Port 1/3 is trunk
Thanks,
Jehan

Connecting IBM v7000 to Nexus 5548

20-Sep-2012 16:51 (in response to feisalb)
IBM V7000 with Nexus 5548UP and Nexus 4000 Design/implemetation guide
Hi Guys
I have a question in regards to connecting IBM v7000 directly to Nexus5548.
CAN WE DO THIS?
Our current setup is IBM v7000 -> MDS 9124 -> Nexus 5548.
But our MDS 9124 are out of warranty now and we need to take them out of production. And only way we can do this is if we connect our IBM v7000 fibre ports directly to our Nexus 5548.
Can someone please point me to the right direction any knowledge base articles etc.
Thanks Heaps
Sid

Dear prkrishn
I am working on the Data Center Solution between two Data Center, details underneath
DC 1 Site
1. 2 x DC Core Switch (Nexus 7009) - will be used for Servers, Application, IBM V7000, Database, etc.
2. 2 x Network Core Switch (Cisco 6509) - Handle Campus and Inter Building connection.
3. IBM V7000 (SAN)
DC 2 Site
1. 2 x DC Core Switch (Nexus 7009) - will be used for Servers, Application, IBM V7000, Database, etc.
2. 2 x Network Core Switch (Cisco 6509) - Handle Campus and Inter Building connection.
3. IBM V7000 (SAN)
With the above mention setup, can I configure FCIP between DC1 & DC2 using Nexus 7009? or I need FCIP capable Switch such as IBM SAN Switch (SAN06-BR), I was wondering if I can configure FCIP on Nexus 7009 DC Switch.
Hoping for your kind response at earliest.
Kind Regards,
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Connecting Nexus 5548 to Catalyst 6500 VS S720 - 10 G

good day,
Could anyone out-there please assit me with basic connectivity/configuration of the 2 devices for the 2 devcies communicate e.g be able to ping each other managemnet interfaces.
Nexus Configuration:
vrf context management
ip route 0.0.0.0/0 10.200.1.4
vlan 1
interface mgmt0
ip address 10.200.1.2/16
Catalyst 6500:
interface Vlan1
description Nexus
ip address 10.200.1.4 255.255.0.0
interface TenGigabitEthernet5/4
switchport
Note: I am able to get all the devices throught SH CDP NEIG command. assist please.

Nexus# sh ip int mgmt0
IP Interface Status for VRF "management"(2)
mgmt0, Interface status: protocol-up/link-up/admin-up, iod: 2,
IP address: 10.13.37.201, IP subnet: 10.13.37.128/25
IP broadcast address: 255.255.255.255
IP multicast groups locally joined: none
IP MTU: 1500 bytes (using link MTU)
IP primary address route-preference: 0, tag: 0
IP proxy ARP : disabled
IP Local Proxy ARP : disabled
IP multicast routing: disabled
IP icmp redirects: enabled
IP directed-broadcast: disabled
IP icmp unreachables (except port): disabled
IP icmp port-unreachable: enabled
IP unicast reverse path forwarding: none
IP load sharing: none
IP interface statistics last reset: never
IP interface software stats: (sent/received/forwarded/originated/consumed)
Unicast packets : 0/83401/0/20/20
Unicast bytes : 0/8083606/0/1680/1680
Multicast packets : 0/18518/0/0/0
Multicast bytes : 0/3120875/0/0/0
Broadcast packets : 0/285/0/0/0
Broadcast bytes : 0/98090/0/0/0
Labeled packets : 0/0/0/0/0
Labeled bytes : 0/0/0/0/0
Nexus# sh cdp nei
Capability Codes: R - Router, T - Trans-Bridge, B - Source-Route-Bridge
S - Switch, H - Host, I - IGMP, r - Repeater,
V - VoIP-Phone, D - Remotely-Managed-Device,
s - Supports-STP-Dispute
Device-ID Local Intrfce Hldtme Capability Platform Port ID
3560 mgmt0 178 S I WS-C3560-24PS Fas0/23
6500 Eth1/32 135 R S I WS-C6509-E Ten5/4
Nexus# ping 10.13.37.201 vrf management
PING 10.13.37.201 (10.13.37.201): 56 data bytes
64 bytes from 10.13.37.201: icmp_seq=0 ttl=255 time=0.278 ms
64 bytes from 10.13.37.201: icmp_seq=1 ttl=255 time=0.174 ms
64 bytes from 10.13.37.201: icmp_seq=2 ttl=255 time=0.169 ms
64 bytes from 10.13.37.201: icmp_seq=3 ttl=255 time=0.165 ms
64 bytes from 10.13.37.201: icmp_seq=4 ttl=255 time=0.165 ms
--- 10.13.37.201 ping statistics ---
5 packets transmitted, 5 packets received, 0.00% packet loss
round-trip min/avg/max = 0.165/0.19/0.278 ms
Nexus# ping 10.13.37.202
PING 10.13.37.202 (10.13.37.202): 56 data bytes
ping: sendto 10.13.37.202 64 chars, No route to host
Request 0 timed out
ping: sendto 10.13.37.202 64 chars, No route to host
Request 1 timed out
ping: sendto 10.13.37.202 64 chars, No route to host
Request 2 timed out
ping: sendto 10.13.37.202 64 chars, No route to host
Request 3 timed out
ping: sendto 10.13.37.202 64 chars, No route to host
Request 4 timed out
--- 10.13.37.202 ping statistics ---
5 packets transmitted, 0 packets received, 100.00% packet loss
Nexus# ping 10.13.37.203
PING 10.13.37.203 (10.13.37.203): 56 data bytes
ping: sendto 10.13.37.203 64 chars, No route to host
Request 0 timed out
ping: sendto 10.13.37.203 64 chars, No route to host
Request 1 timed out
ping: sendto 10.13.37.203 64 chars, No route to host
Request 2 timed out
ping: sendto 10.13.37.203 64 chars, No route to host
Request 3 timed out
ping: sendto 10.13.37.203 64 chars, No route to host
Request 4 timed out
--- 10.13.37.203 ping statistics ---
5 packets transmitted, 0 packets received, 100.00% packet loss
3560#ping 10.13.37.201
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.13.37.201, timeout is 2 seconds:
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms
Note: Now I want to be able to ping Nexus (10.13.37.201) from the 6509 (10.13.37.203), and again be able to ping both the 3560 (10.13.37.202) and 6509 (10.13.37.203) from the Nexus please. How can I do that. I can ping nexus from 3560 as shown above.

Connecting NEXUS 5548 1gig interface to 100mbps

Hi,
I have a 5548 that I need to connect to a firewall that supports 100 Mbps only.
Can I configure interface speed on Nexus 5548 interface (GLC-T) to 100 Mbps inorder to connect it to the firewall??
Regards,
Sabih

Hi Sabih,
The interfaces on a Nexus 5548 can NOT be configured as 100 Mbps.
If you wish to connect to the firewall via a 100 Mbps connection, you will need to make use of a Fabric Extender (Nexus 2000) that supports 100 Mbps.
http://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps9670/data_sheet_c78-618603.html
Thanks,
Michael

I am trying to connect my Macbook pro 2010 to my Samsung HDTV using a mini display port to hdtv cable. Trying to play a slide show in IPhoto but I only get sound with no picture. Does anyone have any suggestions?

I am trying to connect my Macbook pro 2010 to my Samsung HDTV using a mini display port to hdtv cable. Trying to play a slide show in IPhoto but I only get sound with no picture. Does anyone have any suggestions?

I keep saying this over and over, in the hope that people who do a search will find it. Apple cannot possibly test for or be reponsible for the bazillion combinations of adapter, cables, and TV's out there. The only monitors that are 100% guaranteed to work with the MacBook Pro are the Cinema Displays and Thunderbolt Displays, because, they're made by Apple. They're expensive, but they work perfectly.
My guess is that you bought a cheap MDP to HDMI cable, or have a defective one. From my reading of these boards over the past few months, cheap cables have a high failure rate. And the regular priced ones have only a slightly less of one. Try a new one. Make sure you do not damage the Thunderbolt port.

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