Cisco Switching/Routing :: ASA 5520 - NAT Capable Device With High Throughput
Jan 26, 2012
I'll have to replace an old WS-C3550-24. Reasons for this: EOL/EOS & we'll need a NAT capable device...
As I understood, the only L3 catalyst that is able to perform NAT is a 6500? Is that correct? If the above is correct, it seems I can only replace the setup by using a router/ASA with a L2 switch. A router with high throughput (+/- 300Mbps) is hard to find, especially as NAT will require CPU resources...
So, my best (affordable price) solution is getting an ASA5520 (450Mbps FW throughput) and a L2 switch?
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Aug 10, 2011
I am facing a problem on a 2811 router. The CPU is remaining around 60% and the router throughput is reaching at most 18 MB while according to the data sheet the 2811 maximum throughput is 61MB. I have checked the output interpreter in order to try and figure out the cause of the high CPU and to determine if it is affecting throughput but there are not processes consuming more than 10%. I have attached the show tech-support and the show process cpu history outputs.
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Feb 5, 2013
just upgraded my internet to 150/10 but with speedboost DL speeds hit 250 mbps. I currently have a e3200 and it tends to max out at 110mbps, any router recommendations that will support the full 250?
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Oct 8, 2012
Is a 3750 sw capable of handling full routing tables and what can you recommend in a small mutihomed BGP router or switch capable of handling full routing tables?
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Apr 11, 2012
Is L3 ip routing on by default in 3550s? If so is the "ip routing" command visible in the config file? If no - I assume that one would enable L3 routing with that config command.In general terms are there any IOS devices where ip routing is enabled and one would not see the "ip routing" command in config. I.E. if that command is not visible in the config could you assume there is no L3 capablity in that device?
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Nov 24, 2011
I currently have 2 Cat6509 switches with VSS Capable Sups. One of the switches has an extra 10Gig Lincard. Will VSS still work in this scenerio?/?
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Nov 4, 2011
Which smaller POE switch is capable of powering a 9971 IP phone with a cam and a think client attached?
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Feb 5, 2013
I have 3560's in my current environment, operating in the core/distro/access layers. The switches are in a star configuration, performs only layer 2 switching, and utilizes copper (no plans on moving to fiber).
With a fairly limited budget, I've been contemplating on upgrading the central node to a stacked 3750X to eliminate that single point of failure, and trunk the rest of the 3560's to the stacked switch. I wanted to be sure that the 3750X switches will be right for my environment (90-100 hosts), and if what I explained above is a good solution.
I'm also looking like to upgrade 6-7 of my servers (and SAN) with 10GB network cards. Do the ports on the 3750X have port densities capable of 10GB? If not, what switches provide that capability?
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Jul 8, 2012
Our network administrator restricts all our new 1Gb switches to only 100Mb, to which he claims it will increase overall performance. Preventing devices from bottlenecking the network. (that is, only restricting the main switch ports, not the uplinks)For example we have a new building with 2x WS-C2960S-48TS-L connected together with FlexJack and then a 1Gb Fiber connection back to our core switch.
This building is on it's own subnet and there is little broadcast traffic. I don't see the point other than it hinders the potential speed we could use. Labs are set up in this building and 1Gb is MUCH faster when it comes to imaging and software deployment.
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Feb 6, 2013
Wondering if this switch is capable of being a backbone switch for a network of about 1000+ users and if the switch can handle a sustained 30Meg of data going across it?
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Jan 25, 2013
When a physical switchport/routed port has high usage, you can move the link to a higher capacity port, upgrade the port, bond links, etc. What exactly do you do when an SVI has high usage? I guess you could remove some servers from the VLAN, but that doesn't seem like a reasonable solution. What dictates the capacity of an SVI? The backplane of the switch?
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Apr 5, 2011
I have a 3640a, 3550 and airopoint 350 I use for my home internet connection. I know it's old equipment, but it's all I could afford at the time. Directly plugged into my modem I get about 10 mb/s, plugged into a switch port no greater than 6, and about 5-6 when connected to wireless which is understandable because it's only wireless B. I'm going to downgrade my connection for the time being as I'm paying for excess bandwidth that I'm unable to use, but any more recent, affordable cisco routers that can handle a high speed cable connection? What kind of throughput does the 3550 get? Cisco states a throughput of approximately 45-60mb/s for the 3640a.
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Jul 10, 2012
I would like to know what is exactly the current throughput of device? How can we calculate if the device is reaching it's throughput?
For example if router 7200VXR has maximum throughput of 520 mbps as per Cisco documents.
How can we measure if the traffic going through the device has reached maximum throughput. Is it the traffic only inbound traffic or the total of invound/outbound on all physical interfaces?
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May 24, 2013
I have found recently that Cisco 1905 router is having a throughput of only 10 Mb. But the router is having 2 Gig ports!.My understanding is that throughput is the data packetforwarding done by a router at a time.
What is actually mean by throughput of a router. How the router can handle 1 Gb of data from interfaces at a time?
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Nov 27, 2012
We have a problem with the throughput over etherchannel in LACP with 2 or 4 ports. It is iSCSI traffic (vmware esxi 4.1 U3) is going from 2 separate NICs (ports) to the etherchannel (with 2 or 4 ports) that has a SAN connected (Nexenta).
The SAN is configured in passive LACP and the switch is in active LACP. Actually it does not matter if we do LACP or just MODE ON, still same result: ~1GBit/s throughtput in either direction. Like already mentioned, 2 or 4 ports in the etherchannel make no difference, or the configuration of the etherchannel.
I will post some config data below, but here is the question: Why can't we see traffic beyond 1GBit/s? Source and destination are capable of doing much more than that (vmware esxi RAID 5 of 1TB SATA; SAN 16 x 1TB NL-SAS). If we look with CNA, we can see that the traffic is balanced equally over the etherchannel ports. With or without QOS or flowcontrol, no difference. This whole traffic happenes on this switch.
!
port-channel load-balance src-dst-ip
!
interface Port-channel5
[Code]....
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Apr 23, 2013
We've installed cisco devices accross our site in the last year or so and slowing getting on top of it now. How ever our old unmanaged kit seems to be out performing it. It's most like down to my misconfiguration which has lead me to here. Below is the details of hardware and configuration between devices. 3750 Core consisting of the following stacked. [code] I've got MRTG monitoring traffic and the throughput seems to max out 24m/s,
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Feb 14, 2012
When transferring traffic between two VLANs my throughput rate seems to drop to about 1.5 - 3.0 megabits / second.
My setup is like this...
Two Nexus 5020 switches. (switch01 and switch02)
Two Nexus 2232PP fabric extender switches. (switch03 and switch04)
Two Dell R815s with Chelsio and Intel NICs. (host1 and host2)
The servers run Xenserver 6.0, but as part of testing with this I've tried installing RedHat 6.2, VMware ESX 5.0 (vsphere 5).
The issue occurs when using trunking and transferring data from one VLAN to another. Example...
VM1 is in VLAN401 with an IP address of 10.100.40.40. The VM is on Host1. VM2 is in VLAN402 with an IP address of 10.100.50.50. The VM is on Host2.
I've been using a network throughput tool called iPerf to test and I find that I can only get a throughput rate of about 3.0megabits.
If I switch VM2 to be in VLAN401 with an IP address of 10.100.40.41 I get a throughput rate of about 6.7gigabits/sec.
In the above scenario, I'm using a Layer3 interface on the Nexus 5020, but in production we use a Vyatta virtual firewall.
I worked with Citrix for about 3 months and that was a dead end.
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May 4, 2010
I realize this is just a small business switch, basically a rebranded Linksys, but why I'm only getting 200Mbits/s
- 48 port - 10/100/1000 , set to standalone mode
- 3 separate PCs on this switch , all are fast machines with Core 2 duo / plenty of RAM etc...
- all 3 auto-sense 1Gbps connection
I use iperf tool for bandwidth testing and no matter which PC I pick as server, which as client I get about 150 to 250Mbits/s
I am not looking for full 1000 here, but 200 seems rather sad....
- jumbo frames seem to make no difference
- I am using TCP test in iperf , standard no extra flags , 10 seconds, 20 seconds or even 30 seconds all come out the same.
- wiring is shady as some of it is just Cat5 , but when going from one laptop on the switch to another with brand new Cat6 cables I STILL only got 200.
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Mar 2, 2012
I am currently using catalyst 4506 L3 switch and 2950 L2 switches for pc's which are EOL. I am replacing L3 with 3750X, two switches in a stack. L2 is 2960S all with gbps ports. I have to have a baseline (performance comparison with the current setup and new setup) and I am using the following methods
1. Iperf throughput comparison among local vlans
2. Iperf throughput comparison with remote data centers servers.
3. Ping/ftp upload/download comparison with remote DC's. FTP file is around 3GB.
Today I have tested the above with the new setup and compared it with the old setup. For the tasks 1 & 3 I found better performance with the new setup. However the task 2 did not show any performance increase infact the throughput was much lower comparing to the old setup.
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Oct 29, 2012
I see the throughput of a ISR is 296.96 Mbps how would this compare to a 3560 if the figure is 38.7Mpps?
What would the throughput of a 3560 be in Mbps?
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Oct 8, 2012
Does anybody know the Maximum Throuput of a Csico 4948 using its Layer 3 capability? Is it 72mpps for Cisco 4948 and 102 mpps for Cisco 4948 10 Gigabitethernet?
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Feb 13, 2012
I like to know what is throughput of the Cisco 2911, cisco 2921 & cisco 2951 routers. I can see ISRG2 can supports the throughput of 150Mbps.
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Dec 12, 2012
What is the c1811 isr max throughput when not running ipsec site vpn.
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May 21, 2013
I'm trying to identify a Cisco router that will give 300+Mbps through a 1Gb WAN port. I think the 1921 can get up to around 300Mbps with the on board RJ45 ports, but are there any other/better suitable models?
There's no need for any other particular functionality or feature set, the routers aren't doing anything fancy or unusual - it's the achieved throughput that's important.
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Mar 21, 2012
We are experiencing output drops on our 3750G-12S (IOS 12.2.55).
I have monitored throughput with MRTG, but it doesn't seem that high compared to that the 3750G is supposed to handle 17.8 Mpps.
The 3750G's are stacked, running ospf, qos, multicast (IPTV) and etherchannel.Is the maximum throughput reduced by stacking or any of the other features?
I don't know if one can estimate what the maximum throughput is per ASIC or per port, but on one of the ASICs that is having drops the peak unicast load is 1.3 Mpps and multicast Mpps is 0.9 Mpps. Total ~2.2 Mpps.
This doesn't seem high at all and I don't understand why the drops are appearing. What I can do to find out the reason for these drops?
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May 30, 2012
How i can view the capacity throughput (backplane) of core switches (6509)? How i know much is in use?
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Sep 20, 2012
I am seeing a strange situation on my 6500 switch?By having snmp walk on '1.3.6.1.4.1.9.9.109.1.1.1.1.3' (== cpmCPUTotal5sec), I came to know that there are two processor and the cpu util for switching processor is gone to 88 % and some time creeps to 99 %.
snmpwalk -v2c -c "removes" sw6500 '1.3.6.1.4.1.9.9.109.1.1.1.1.3'
SNMPv2-SMI::enterprises.9.9.109.1.1.1.1.3.1 = Gauge32: 12 (--- this is for CPU of Router Processor )
SNMPv2-SMI::enterprises.9.9.109.1.1.1.1.3.3 = Gauge32: 99 (--- this is for CPU of Switching Processor )
but when I do sh process cpu on the console, all looks normal as it shows cpu utilization of RP. why the value is so high on the switching processor ?
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Mar 3, 2012
I have 2 6509-E chassis with SUP-720-VSS and classic line cards :-(. on October 2011 the switch reached 100% CPU on both devices and the entire network went down. Customer restarted the core so we lost all the log files and couldnt find out any root cause on the same. TAC engineer suggested to have some script configured on the system in case of CPU shooting up above 70%, it will create a file in flash and keep appending the logs to the same. Last week i got call from customer saying that the CPU again went high for around a minute on both the cores. Last time i added CoPP also on the switch in order to prevent the CPU reaching 100%. Still it went high and from the captured logs i saw that the process created the high CPU was Port Manager Per and SSH process. Attached the file created by the netdr capture command.
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Jun 8, 2013
The fans 1 & 2 in Module 1 on the Nexus5K are still experiencing the very high RPM and speed issue.
I have replaced the fan from another operational Nexus5K, and the fans are fine in the other Nexus. The replacement fans also have the same issues, so it is not a fan hardware issue.
There are no threshold alarms. the only log entry that is related to this is as follows:
%NOHMS-2-NOHMS_ENV_ERR_FAN_SPEED: System minor alarm in fan tray 1: fan speed is out of range on fan 1. 7950 to 12500 rpm expected. I have provided the output for both the fan detail and the temperature.
N5K-01# sh environment fan detail
Fan: --------------------------------------------------- Module Fan Airflow Speed(%) Speed(RPM) Direction --------------------------------------------------- 1 1
[Code].....
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Mar 19, 2012
SUP2T-D#sh proce cpu hist
11111111111 1111 1111 1111 1111
0000000000099999000099999000099999999990000999900009999999
0000000000099999000099999000099999999990000999900009999999
100 **********************************************************
90 **********************************************************
80 **********************************************************
70 **********************************************************
60 **********************************************************
50 **********************************************************
40 **********************************************************
30 **********************************************************
20 **********************************************************
10 **********************************************************
0....5....1....1....2....2....3....3....4....4....5....5....
0 5 0 5 0 5 0 5 0 5
CPU% per second (last 60 seconds)
SUP2T-D#sh proce cpu sorted
CPU utilization for five seconds: 100%/83%; one minute: 99%; five minutes: 99%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
416 3324188 879928 3777 13.05% 14.42% 14.45% 0 Spanning Tree
633 104408 5091 20508 1.50% 0.53% 0.45% 0 Env Poll
75 22000 298 73825 1.10% 0.13% 0.07% 0 Per-minute Jobs
168 69696 163563 426 0.39% 0.23% 0.22% 0 slcp process
2 532 1010 526 0.07% 0.00% 0.00% 0 Load Meter (code )
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Nov 7, 2011
Currently, my Cisco 3750x (2 switches stacking) is having very hight CPU. Below are some of the output :
3750-ANA#sh processes cpu sorted | ex 0.00
CPU utilization for five seconds: 55%/30%; one minute: 55%; five minutes: 55%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
[Code]....
I am not sure what is using CPU to go up like this. I had tried some troubleshooting guide on Cisco web site like "Troubleshooting high CPU Utilization"
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Feb 3, 2013
I have a one question. I am using Cat3750x-48 switch. Suddenly it has occurred following high CPU log message in Cat3750x-48 switch.
%SYS-1-CPURISINGTHRESHOLD: Threshold: Total CPU Utilization(Total/Intr): 62%/0%, Top 3 processes(Pid/Util): 162/40%, 156/10%, 74/1%
What is meaning of PID 162 ?
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Feb 27, 2013
I'd like to see some REAL LIFE comparisons of ASA firewall throughput (a bit like this one for ISR G2 Routers - [URL].
The reason I ask is that I recently upgraded a firewall from an ASA5505 to an ASA5520 on a small network where the only outside connectivity was a single 10meg Internet circuit with an IPSEC VPN (not landed on the firewall but on a router) to another site.
When I swapped out the firewall the users noticed a big improvement. The firewall is not doing anything out of the ordinary - no IPS or VPN, just standard state full inspection.
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