Performance of routing?

Similar Questions

• Bubble protected inner IP routing

  We recently re - ip had our network and are now using several VLANs within our production (protected) network.  Front of re - ip'ing, we had a dish network (1 vlan)

  Since the re - ip initiative, we have not conducted a SRM test for one of our groups.  Within our groups, virtual machines are all different VLAN.

  When we realize a SRM test and failover to the protected bubble, someone can think of a way that we can perform the routing to the protected bubble breast so all virtual machines, which are on different subnets, can still communicate with the other IP?

  Thanks in advance

  Sorry about that.

  However, there is a list of devices to virtual router on the vmware site.  Maybe one of them can help you do what you're trying to do.

  http://www.VMware.com/appliances/directory/cat/0?k=router

  Also, I should mention that if the VMS need to communicate between hosts, they should have an uplink to the physical switch.

  Fortunately, if you're trunking this virtual router uplink will manage the rest.  Just don't have the virtual router have a default gateway.  You want the router to "route" traffice between your virtual machines in the network of bubbles, but you won't be able to connect to your production site.

  I hope this helps.

  Good luck!

• PXI_Clk10 can be found in PXI6115.

  I have two PXI6115, and I want to sync them. I found an example of examples of NEITHER. He said that both PXI cards can be synced through sharing RefClk10. But I can't found this reference clock signal. Can you give me any suggestions? Thank you very much.

  Frogreenmm,

  Let me see if I can help clear up your confusion.  First of all, PXI_Clk10 is a signal that is present only in the PXI chassis.  PXI-6115 have a PLL to lock to the signal.  However, as you said you have a PCI-6115 so this synchronization scheme is not available to you.  To synchronize these devices, you must share the signals between devices through an interface.  You mentioned that you have a RTSI cable, so it will be the best way to do it.  To use RTSI with DAQmx, you will need to go to the measurement and Automation Explorer (MAX) and add RTSI cable as a DAQmx device.  This DAQmx allows to know the presence of the RTSI cable and will also allow the driver to perform automatically routes between your devices using this interface.  To add cable RTSI, go to MAX and expand devices and control of the Interface.  NOR-DAQmx devices and choose create new DAQmx Device-> RTSI cable.  The RTSI cable should then appear in your list of devices.  Right-click on it and select 'Add the device to RTSI cable.'  This is to add both of your PCI - 6115 s RTSI cable.

  At this point, I guess you have physically connected the two devices with cable and now DAQmx knows in this regard.  Now, we could use one of the many methods to synchronize the devices.  We can share a master time base and start the détente between the two devices or we could share a clock sampling and a trigger of departure between the two devices.  The example of delivery DAQmx titled 'Multi - Device Synch - Analog Input - Finite Acquisition.vi' is an example of how share a time base and trigger start (look at the case of block diagram ' E and S series share Master Timebase ').  In this case, the two devices will share the time base of Dev1, and both devices will use the beginning of Dev1 trigger to begin their acquisition.  As long as you added your cable RTSI for MAX and added your devices to the RTSI, DAQmx cable can take care of the details of routing of these signals.  An important note about this approach is that you call start on the 'slave' (Dev2) 6115 before calling start on the 'master' (Dev1).  It is so Dev2 is ready for the trigger start signal when Dev1 sends it.

  You can use a very similar approach by a sample clock between the two devices sharing rather than share the main time base.  Yet once again, I recommend that you also share a trigger to start and start the 'slave' device before starting the "master" unit

  Hope this helps,
  Dan

• clock calendar - digital output

  Hi all!

  I need timing equipment impliment on a few digital output lines.  That's what I have so far:

  

  

  I didn't get an oscilloscope for her yet, but I'm fairly certain that it works.  Please note that in this example, I use a PCI-6115.  I have 2 questions:

  (1) make what I do look reasonable at a quick glance?

  (2) I'm kinda mistified by the entry of clock source to the example of the clock function.  The analysis that I read just still confuses me.  I understand that the clock is what dictates the sequence of material.  I do not understand how to choose the appropriate clock source correctly.  More specifically, in the above example, I've only had the program work when I chose "20MHzTimebase".  What is c? Why this work?

  When I try to select ' Dev1 / / SampleClock ", I get the following error:"attempted to perform a route when the source and destination are the same point."

  When I try to select "Dev1/PFI0" or "RTSI0/DEV1", I get a timeout error in the wait_until_done.vi--> it does not appear that the waveforms are executed.

  That means the PFI and RTSI acronym for, and why they appear as options when you select a source of the clock?  Furthermore, why have they not worked as a clock source?

  I would be very grateful to anyone who could clear things for me a little.  Thank you!

  Have you read the http://digital.ni.com/manuals.nsf/websearch/01C075FB9478F94A8625786A007435BA? manual The definition of PF and RTSI are here. They are designed using external clock signals. You have the choice of using the internal clocks of analog output (20 MHz) or external clocks. If you do not connect the RTSI bus or PF what, whether you have no clock so no data will be output. Selection of as source does not work because it is not a source. You provide a source for it.

• WRT1900ac - has no Config - error unexpected 2117 wireless bridge

  I'm having a problem connecting 2 routers together in Wireless Bridge mode WRT1900AC.  I followed the instructions here to step 7 (Clicked "Yes" to the "Warning" screen), and then I get this error:

  Unexpected Error
  
  2117
  
  We've encountered an unexpected error. If the issue continues, please visit our Technical Support site.
  
  Details
  
  /jnap/router/InitiateWirelessConnection -- Status: 200 OK Date: Sat, 18 Apr 2015 05:22:03 GMT Server: lighttpd/1.4.34 Connection: close Content-Length: 87 Content-Type: application/json; charset=utf-8
  

  

  This router is brand new.  The only things I've done are:

  1. Perform a router unboxing conversion
  2. Ignored configuration wizard
  3. Try to configure wireless bridge mode
  4. Received the error saying I need to reset the router to the factory settings
  5. Reset the router to the factory with the red button settings
  6. Router connected directly to the link upstream (cable Modem)
  7. Through the Installation Wizard
  8. Update the Firmware to the official version: 1.1.8.164461
  9. Has crossed the Bridge wireless installation Instructions here
  10. Got to step 7
  11. EU 'unexpected error 2117.

  I retried again and got a different error:

  

  I thought I would add another update here, given that the issue has been isolated and fixed:

  It turns out that plugging in the Comcast cable on the floor was very old, had a longer cable length, and was also on a split bar.  Called Comcast to help solve our problem, and they were able to test the intensity of the signal on the line.  Signal was not reliable on the cable on the floor, so we moved the modem more near the source of moving the cable (don't run, no separator, the best signal of shorter cable).  Upstream of the modem connection was immediately more reliable, moving router downstairs gives the best WiFi coverage for the rest of the House.  I have decided at this time that the extra router was not necessary and referred.  So, Detective Conan... problem was double: bad signal on the incoming line from Comcast and bad location for WiFi router upstairs.

• New configured vlan4 failed to get the IP address of our ad server

  Any guy who can help me: due to the expansion of network, I need allocate a new subnet 192.168.4.0 on our lan co. existing, 3 private LAN 192.168.1.0 (primary, all related Windows AD server and internet devices). 192.168.2.0 and 3.0 are Department LAN for user workstations. All desktop user on all the networks had the host Windows AD 192.168.1.20 IP. I used a new switch 6249 dell to configure a new VLAN 192.168.4.0, but user on this network failed to get IP of the host of the AD. Could someone give advice? Console > console en #show run! Current configuration:! Description of the system "PowerConnect 6248, 3.3.10.3, VxWorks 6.5! Version of the system 3.3.10.3 software! Passage mode is configured as disabled! Configure the vlan database vlan 4 vlan routing 4 1 output battery 1 2 Member out ip address 192.168.1.221 255.255.255.0 ip default-gateway 192.168.1.1 no ipv6 do enable the interface vlan 4 routing ip address 192.168.4.22 255.255.255.0 ip helper-address 192.168.1.20 ip 192.168.1.20 domain helper-address dhcp ip mtu 1500 output user name 'admin' password level 15 dhcp 0192023a7bbd73250516f069df18b500 encrypted l2relay dhcp l2relay vlan 4! interface ethernet 1/g13 switchport access vlan 4 output! interface ethernet 1/g14 switchport access vlan 4 output! interface ethernet 1/g15 switchport access vlan 4 output! interface ethernet 1/g16 switchport access vlan 4 output! interface switchport ethernet 1/g17 access vlan 4 output! interface ethernet 1/g18 switchport access vlan 4 output! interface ethernet 1/g19 switchport access vlan 4 output! interface ethernet 1/g20 switchport access vlan 4 output! interface ethernet 1/g21 switchport access vlan 4 output! interface ethernet 1/g22 switchport access vlan 4 output! interface ethernet 1/g23 switchport access vlan 4 output! interface ethernet 1/g24 switchport access vlan 4 Server snmp community public rw to exit

  Remove the routing of the 6248

  Delete the IP address that you assigned to 4 VLAN on the 6248

  On the S5624P create VLAN 4 and assign an IP address

  On the S5624P implementation of the programme of assistance to point to the address DHCP IP

  Make sure that the S5624P performs the routing VLAN.

• 2 VLAN ACL with what Miss me

  Thanks for reading.
  

  This topology consists of one 6224 and two 2824 Powerconnect switches.
  

  Right now, we're looking to build two VLANs, routed, sharing a small range of IPs on VLAN 20.
  

  Also want to route out to the interwebz for both nets. Do I need a third vlan for that?
  

   Presumably one for each actual route out I would think.
  

  I've entered the following commands into the 6224.
  

  - -
  

  confvlan databasevlan 10vlan 20exitinterface vlan 10ip address 192.168.1.1 /24ip access-group 'BUSINESS'name SALESroutingexitinterface vlan 20ip address 172.16.1.1 /24ip access-goup 'SALES'name BUSINESSroutingexitip access-list SALES permit ip 192.168.1.0 0.0.0.255 anyip access-list SALES permit ip 172.16.1.0 0.0.0.255 anyip access-list BUSINESS permit ip  172.16.1.204 0.0.0.7 anyip access-list BUSINESS permit ip 192.168.1.0 0.0.0.255 anyinterface range 1/g9-1/g16 ---these are untagged in both Vlan 1 and vlan 10switchport mode access each has a PVID of 1 in both Vlans??switchport access vlan 10exitinterface range 1/g17-1/g24 ---these are untagged in vlan 20switchport mode access PVID of 1 or 20 neither changes anythingswitchport access vlan 20exitip routing
  

  - -
  

  From VLAN 10 on the 6224 , all addresses in VLAN 10 and 20 can be pinged.
  

  From VLAN 20 on the 6224 all addresses in VLAN 10 and 20 can be pinged,
  

  2824-1 is connected via its port 24, (a member of vlan 20 in switchport mode access)
  

  to port 24 on the 6224.
  

  Port 1/g23 on 2824-1 is connected to a host at 172.16.1.240. that host can  ping nothing
  

  beyond 172.16.1.1. But if I plug both the switch uplink and the host to a Cisco 3524xl in factory defaul
  

  I can ping everyhthing on the 172.16.1.0 /24 subnet right across the uplink. I'd like to at the least
  

  get help on what the issue is with the pings from the 2824.
  

  The ACLs aren't actually in play but they are intended as part of the config.
  

  thanks in advance for your help.
  

  I think you're on the right track, leave the configuring ACLs for now. Once we have connectivity, then add them in.

  With the connections between the two switches, we use mode Trunk/general instead of the access mode.

  If the 6224 performs the Routing and connects to your external connection. While the connection must have its own dedicated VLAN. The 6224 also has a static route in place, helping to direct traffic on.

  Here's a post with some info to look over.

  en.Community.Dell.com/.../19506015.aspx

  Keep us updated.

  Thank you

• VLAN

  If I have 4 VLANS. How can I give the work stations in each VLAN whose IP address dynamically.

  I guess the routing between 4 VLAN is done by a layer 3 device or the l3 himself switch or a router. On the router that performs the routing inter vlan, (if this is a cisco router), you can run Cisco IOS dhcp and run several pools. Otherwise, you can configure this device L3 to requests dhcp relay for each VLAN on a DHCP server, which can be a Microsoft or the DHCP Linux (any compatible DHCP server) server as follows with the assistance-address command under each vlan.

  int vlan 1

  IP helper address

  int vlan 2

  IP helper address

  int vlan 3

  IP helper address

  int vlan 4

  IP helper address

  If the L3 device runs on a router and it has sub interfaces defined for each vlan.

  pool IP dhcp Pool1

  network 172.16.1.0/24

  default router 172.16.1.1

  pool IP dhcp Pool2

  172.16.2.0/24 network

  default router 172.16.2.1

  pool IP dhcp Pool3

  network 172.16.3.0/24

  default router 172.16.3.1

  pool IP dhcp Pool4

  network 172.16.4.0/24

  default router 172.16.4.1

  int fa0/0

  no ip add

  int fa0/0.1

  dot1q ENCAP 1

  Add IP 172.16.1.1

  int fa0/0.2

  dot1q ENCAP 2

  IP add 172.16.2.1

  int fa0/0.3

  dot1q ENCAP 3

  Add IP 172.16.3.1

  int fa0/0.4

  dot1q ENCAP 3

  IP add 172.16.4.1

  Where VLAN 1,2,3,4 are shared resources of the switch where them VLAN are defined at the interface of the auspicious router.

  Also exclude the address 172.16.1.1, 2.1, 3.1, 4.1 and any other address you want to exclude by using the command

  DHCP excluded-address IP 172.16.1.1

  DHCP excluded-address IP 172.16.2.1

  DHCP excluded-address IP 172.16.3.1

  DHCP excluded-address IP 172.16.4.1

  Other options such as the term of the lease, DNS, WINS, scope options etc. can be specified within each pool. Even based on the mac addresses client bookings are possible.

  HTH

• DMVPN tunnel on a shelf (ADSL Internet access provider)

  Hello world

  I wonder if I can potentially use same value of pi and the same mtu size of ip tcp mss on the Tunnel interface and interface Fastethernet WAN on my DMVPN spoke routers? WAN interface is facing an ADSL modem provided by the ISP.

  That is something like:

  Interface FastEthernet 4

  IP 1400 MTU

  IP tcp adjust-mss 1360

  ....

  Interface Tunnel0

  IP 1400 MTU

  IP tcp adjust-mss 1360

  Will be this questions with fragmentation for DMVPN?

  Thank you!

  Yes the major impact is the fragmentation and so performance.

  I think what you describe is OK and as mentioned turning tunnel PMTUD will take care of some scenarios.

  Think of it like this (this is a simplification, but I think as a fitting one).

  A 1400 bytes packat happens LAN, we perform the route search, he points through the tunnel interface. We carry out the audit, ' do we need to fragment this packet? The answer is 'no', because it is part of the MTU.

  We perform encapsulation (torn by the characteristics applied on the tunnel interface), adding the GRE + IPsec (header GRE, IPsec header and padding).

  Now, we take this encapsulated package and check routing post encapuslation, he'll call back via interface fa4.

  Don't the packets in the MTU of 1400 feet. 'No', we must fragmed if it is allowed.

• How do I get the browser permission to set the current location

  I had this problem before, and it's why I keep getting of Richardson, Tx. and sometimes even close to cities.  Most of the time my position shows Richardson, Tx. and when I try to detect my location I get the browser refused permission for the current location warning box.

  I tried my solutions I have found on the internet, and none of them don't keep my sheet set, even after he declares that it is set. How can I get the permission of the browser set my current position (Jackson, TN)?

  A lot of time, the sites asking that your location will try to determine based on your IP address, which may return strange results if your Internet connection performs the routing in other places.

  You can make sure that this check box is disabled, as shown in this picture of eightforums:

  But you can also set the default location to use, here:

  

• Collage of guest VM

  Can I group comments to a vSwitch (vds or standard) interfaces?

  I want to prototype a virtual router that could replace at least part, LB functions.

  It doesn't have the ability to perform L3 routing before the virtual machine, in fact, we have a single VIP (or router/nexthop etc.) which will be hosting the guest virtual computer on a network of L2.

  I have a LAG (LACP) connection between the vSwitch and external physical (4x10Gbps or QSFP + interfaces - so we have (>) 40Gbps connection to the host), as well as connections will be statistically distributed across all interfaces (~ estimate connections unique > 1 M, so LACP is balanced).

  Which means we have a possible L2 40Gbps network between the physical switch and the guest of computer virtual, but I need the same LACP capacity between the guest and the vSwitch. Guests certainly support (such as the Linux LACP link), and his confirmation as I did the same bare metal of the OS on the host computer it managed network as expected load, but is not a very efficient use of hardware host for 95% of the time (the average load is of ~ 20Gbps and host CPU/RAM are never more than 25% of full load).

  Is this possible? Other options for a single person to manage more than the 10 Gbps for a single address MAC the vmxnet3 duplicates would allow?

  A virtual machine cannot form an etherchannel/LAG with a vSwitch, in fact the vSwitch is completely invisible to the virtual machine, but this should not be necessary in the first place:

  It seems that your general assumption is because the virtual machine has a unique vNIC which emulates a liaison 10GBASE-T, it is not able to exceed this bandwidth. It is a common misconception.

  Virtual machines may very well exceed the bandwidth of their virtual links.

  In theory and in the physical world, the maximum would be 10 Gbit/s, since vmxnet3 emulates a 10GBASE-T physical link. This flow is governed by physical limitations and traffic on the wire of the standard, but these do not apply in a virtual setting.

  For example, guests on the same host and vSwitch and port group are able to exceed beyond 10 Gbit/s with a unique vNIC. I know, we could think that for example the e1000, which has a link from 1 Gbps to the guest, is limited to 1 GB/s maximum. or vmxnet3 is limited to a maximum of 10 Gbps. But this isn't the case. They can easily exceed their "speed of the virtual link. Test it with a flow of the network as iperf tool and see for yourself.

  Operating systems don't artificially restrict traffic to match the speed of the agreed line unless it is physically required.

  To give you an example, I am able to reach 25 + Gbps with iperf between 2 virtual Linux machines with a vNIC vmxnet3 unique on the same host and port group. The same should apply to traffic that exits to the physical network through an OFFSET, you gave have multiple connections to high with bandwidth enough entropy to be spread over all the links.

• iSCSI - discovery dynamic vs. static?

  When you use iSCSI, there's an advantage to the use of static discovery from the dynamics for this?

  I understand when you use dynamic you point to one IP address and the TCP port and the initator iSCSI will communicate with the target and ask Lun, which will then be accessible. When you use static this information must be manually specified. Is that correct, and is there a reason to use static?

  You're right, dynamic discovery with initiator "SendTargets" send to a single IP address and port and if the target is listening on several names and addresses, all of them are sent to a form of TargetName and TargetAddress (incase #). I think that determine what are behind the target LUN is not part of dynamic discovery

  As for your second question, hardware server is probably more flexible in terms of network adapters that can be used, so software ISCSI is more flexible, allowing to configure several IP addresses.  Many have IP/port combinations the target gives many more options: one being the ability to connect to the storage of different networks (but which can also be performed on routed networks), the second being more paths in paths multiple configuration when same LUNS accessed using two different IP addresses. And finally, if this hash IP policy could be used for a better distribution of load between natachasery in NIC teaming configuration on the ESX host.

• My new Apple TV 4 is extremely slow compared to my old Apple TV 3. Same router but worse performance. Can anyone help. Thank you.

  My new Apple TV 4 is extremely slow compared to my old Apple TV 3. Same router but worse performance. Can anyone help. Thank you.

  How slow.

• Windows XP SP3 with router Belkin 802.11n Play 600N HD: how to minimize the impact on performance wireless streaming?

  Among the other computers in my house, I have an old Pentium 4 2 GHz Dell under Windows XP SP3.  I want to take all my music and put it on a (Belkin streaming) attached to the router hard drive, so I only store - and keep - it in one place, but can access to any of my computers - including this old Dell.

  The Question Is: there will be any type of CPU and/or memory (although I'm more concerned by the CPU) overhead streaming music from my drive attached to the router to my Dell (and if so: is it possible to mitigate that)?

  Specifically, I mean compared to run music directly to internal hard drive of the Dell: if any CPU or memory 'cost' for it in streaming on the network beyond what it already takes to play music.

  If it makes a difference: I use Windows Media Player to play the music.

  Hi RDougShelton,

  There will certainly be performance lag if played that music will be broadcast online in and the router will be bandwidth. For example, an impact on the speed of surfing.

  When you play locally on the hard drive, the bandwidth will be unaffected, however, you can face sligh increase the CPU usage.

  Hope that info help.

• Option not available in Configuration Professional v2 performance routing

  I get a router Cisco 2901 put in place and tries to load balancing/link aggregation and/or failover for my double WAN connections. Being new Cisco's IOS software, I'd rather do my setup using the specialist graphic Configuration interface.  If I understand correctly, the option of routing Performance will help me set up but I don't have this option, available in professional Configuration; any ideas? I downloaded the latest version of CP (version 2) I think; I've been reviewing on the article often referenced on this feature to: Cisco Routing of Performance and reviewed the Cisco Feature Navigator available on http://www.cisco.com/go/cfn for my release IOS; the feature I'm looking for is documented in a flash to http://www.cisco.com/en/US/docs/net_mgmt/cisco_configuration_professional/scrcst/PfR/CCPPFR.swf (screenshot below) presentation:

  

  A summary of key results of the command show version 'IOS' on this router are:

  Cisco IOS software, software C2900 (C2900-UNIVERSALK9-M), Version 15.0 (1) M, VERSION of the SOFTWARE (fc2) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2009 by Cisco Systems, Inc.

  Last update Wed, 30-Sep-09 05:30 by prod_rel_team

  ROM: System Bootstrap, Version 15.0 M1 (1r), VERSION of the SOFTWARE (fc1) BPRouter availability is 5 days, 23 hours, 43 minutes system returned to ROM by system restarted at 11:34:47 PCTime Wed Dec 23 2009 system image file is "flash0:c2900-universalk9-mz.» Spa. 150 - 1.M.bin.

  Cisco CISCO2901/K9 (revision 1.0) with 483328 K/K 40960 bytes of memory.

  Card processor ID FTX134981A3

  2 FastEthernet interfaces

  2 gigabit Ethernet interfaces

  1 module of virtual private network (VPN)

  Configuration of DRAM is wide with parity 64-bit capable.

  255K bytes of non-volatile configuration memory.

  254464K bytes of system CompactFlash ATA 0 (read/write)

  License info:

  License IDU:

  -------------------------------------------------

  Device SN # PID

  -------------------------------------------------

  * 0 FTX134981A3 CISCO2901/K9

  Technology for the Module package license information: "c2900.

  ----------------------------------------------------------------

  Technology-technology-current package Type next reboot technology

  -----------------------------------------------------------------

  IPBase ipbasek9 ipbasek9 Permanent

  Security securityk9 Permanent securityk9 data uc no no no register None None None Configuration is 0 x 2102

  Thank you for your question.  This community is for Cisco Small Business products, and your question is referring to a product Cisco Elite/Classic.  Please post your question in the Cisco NetPro forums located here: https://supportforums.cisco.com/community/netpro?view=overview this forum is subject to the subject matter experts on Cisco Elite/Classic products that may be able to answer your question.

  Kind regards

  Cindy Toy

  Cisco Small Business Support Community Manager