Cisco WAN :: Network Performance When Upgraded To IOS 12.4.24.T5 On 881W
Jun 13, 2011
I have a Cisco 881W router. It has historically run IOS 12.4 (20.T3) without issue. I recently upgraded the IOS to version 12.4 (24.T5). Once I made that upgrade, my ability to fully throttle my downstream bandwidth became seriously limited and variable going from a steady 6Mbps to an unreliable 2-3Mbps. No other changes were made to my environment. The degredation in performance was so bad that my AppleTV would no longer stream Netflix or YouTube.I downgraded back to the original IOS 12.4 (20.T3) and the downstream bandwidth and variability issues disappeared. As well, my ability to stream movies or videos with my AppleTV on Netflix or YouTube returned without issue.I wonder if upgrading to IOS 12.4.24.T5 enabled some new commands that I'm not catching or there is something else at play that I'm totally missing.
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Feb 26, 2013
i want to know if someone here know how to observe the network performance? and u know what kind of software that can do the observation on the network performance?
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Feb 2, 2011
I need to track and record all functionality, connectivity speeds and applications of a remote laptop. Here's the basic set up of my problem:We have 40 medical facilities in five Western States, each with up to 30+ pieces of hardware including thin clients, PCs, laptop computers and wall mounted touch screen kiosks operating on a variety of OS including primarily XP pro, then Linux and transitioning into Win 7.We have installed Aruba wireless network in each building on which our mobile medical cart laptops connect. Each facility has a different mix of primary and backup/failover ISP from DSL, Cable, T1 to Bonded T. All are at or exceed 22MB down, 5MB up save the T1s at their dedicated 1.5 and we monitor speeds and network stats trhough our gateway device. PfSense.All employees connect through an RDP (Remote Connection) to our hosting company in Atlanta, GA where the farm of about 28 servers reside hosting our medical, email and office applications.We regularly are contacted by nursing and clinical office staff complaining that "the network is slow". We review connection speeds, loads, ping times and confirm that there are no ISP Speed issues that are causing the "Slowness". However when we review exactly what the nurses mean by "slow" it invariably turns to how long it takes to log in to the RDP sessions and access then run their medical applications in the RDP. They often sit and wait for the RDP to load for five minutes or more and complain of waiting for their typing to catch up in the applications they work in.
We believe the slowness occurs once they are connected in the RDP and that their problems are occurring at the hosting company's facility, getting through their firewall, through profile management and server hardware/software but we can not prove this is the case because the hosting company always claims they see perfectly acceptable speeds and access on their side and we are locked out from access to monitor tehir environment. Changing hosting companies is probelmatic because they are specialised in our industry and leaving would be diffcult. I need some software that I can install on a few machines in a select few of our facilities that will track and record the actual user experience so that we can watch and review exactly what is happening, what the network stats look like and precisely where the user is experiencing "slowness".
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Nov 30, 2012
I run my virgin broadband through an old NTL modem and a Belkin router. I haveit all attached to a computer in my study along with a new 6TB Buffalo Nas drive. The computer has GIGABIT LAN. I use Belkin powerline units to relay the network around the house. In my lounge i have a blu ray player, AV amp and my sky box attached to the network via the Belkin powerline units and all run ok. This week i have added a Cambridge audio streamer but i am suffering now from a lot of dropouts and network failures escpecially when trying to stream music from my NAS. all seem to be set up correctly as per the manuals. I have spent a lot on this unit specificallly to stream my music so this is really important to get working correctly The powerline units can flash blue (fast ) or orange (slower) but i only see the orange light .My local dealer says i need to upgrade my Modem/Router and has suggested an ASUS RT-N66U which I understand is a modern 2.5/5ghz model . he says my system is overloaded
A few questions.
Is this a suitable modem for me to use on my Virgin cable broadband? (apparently there are two alternatives types of modem/router)
Is there a better alternative unit ?
Could there be another cause for my problems and if so how do i diagnose them ?
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Dec 5, 2011
We have two Cisco AP541N running our wireless network in the office. They're configured with the same SSID, so that people are automatically switched between the two access points depending on their location in the office.
Frequently we are experiencing very poor performance of our wireless connections and it seems to be related to when 4-5 clients are connected to one access point. After restarting it (which also moves the 5 clients to the other access point), the performance problem goes away for a while.
I've upgraded one to firmware version AP541N-K9-2.0(1) (the other is running AP541N-K9-1.8(0)), but it doesn't seem to work.
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Apr 10, 2012
I wanna subnet my Network to increased performanced but im alil confused hereWhen looking at my ROUTER STATUS this is what i have.
INTERNET PORT
IP Address XX.XX.XXX.XX
gateway ip XX.XX.X.X
XX.XXX.XXX.XX
LAN PORT
ip address xxx.xxx.x.x
Which one of this ip addresses do i have to subbnet?,my router is a ,NETGEAR N600 Wireless Dual Band Gigabit ADSL2+ Modem Router DGND3700 Wireless router - 4-port switch (integrated) - EN, Fast EN, Gigabit EN, IEEE 802.11b, IEEE 802.11a, IEEE 802.11g, IEEE 802.11n.
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Jan 14, 2013
i built a mini NAS system with a Intel D945GSEJT mother board (atom cpu) -
1 x FSP 12V 5A 60W AC Adapter
1 x EPC-01 Case
Intel Desktop Board D945GSEJT With integrated Intel Atom processor N270Motherboard - mini ITX / micro ATX - Intel Atom N270 - i945GSE - Gigabit Eth
1 Kingston ValueRAM 1GB 533M
WD scorpio black 500GB (only for storage)
i have installed debian squeeze (headless shell only) on a 1gb pen drive that is readonly (using aufs)it its a great setup for me?i use it for file server, webserver (local only), SAN server etc...the only problem i have is that sometimes the drive access is slow when using iscsi from it, or coping files.on samba i get about 30MB/s NFS i get about 55MB/s using iperf i get max 61MB/s (but if i setup the server on it - 114MB/s can be transferred to it) is there any way to increase network performance on it? if you have this board what type of transfer speeds do you get?
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Jun 3, 2013
I have a network coming up for a switch refresh. Management is pushing for 2960s and I would like 3850s. We are running Cisco Voice and Video over the network. I saw a few things that seemed to be in favor of a Layer 3 switch vs. a Layer 2 switch. Some items like better performance due to switching based on IP vs. switching based on MAC. Some information that will show the 3850 to be a better choice or that the 2960 is capable.
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May 2, 2012
I am working as a Network Administrator. Here I have to manage Cisco Switches 2960 and 4500 Series, Active Directory, Database Server, Exchange Server, File Servers, IP Telophony, Fortigate Firewall, 2960 Router, Wifi availability within Company. Although, in case of any disaster we will contact to vendor for solution, but the management told me to deploy any Software/Network Monitor which will facilitate to manage all this, i.e, overall network Health check, Performance Measurement, Fault Tolerance.
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Dec 17, 2010
I am implementing mGRE with DMVPN so multicast traffic can be delivered to employee homes over Internet, everything worked fine except that I can not configure PIM or ICMP static groups on C881W's mGRE tunnel interface or BVI interface(RIPv2 works on mGRE interface however), configuring "ip multicast-routing" did not give me any errors, do I need license to be about to configure PIM/IGMP? I am running C880data-universalk9.mz.124-20.T5.bin" with license level advsecurity.
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Jan 24, 2011
I've got a Cisco 881W Router and I am trying to set up the wireless Network. I've managed to get the SSIDs up and running, but I can't see to get DHCP addresses going from the router to the access point and Laptops .When i am connecting laptop directly to Router ethernet port i am able browse and seeing DHCP address. [code]
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Mar 9, 2012
I have an 881W with configuration posted below along with IOS version. The site has a local Exchange server and also a LAN-to-LAN IPSec. Exchange's internal IP is statically NAT'd. Problem is that when that when a static NAT for Exchange is in place, Exchage is not accessible thru tunnel. Scenarios is as below:
Exchange's internal IP: 10.50.80.21Exchange's NAT'd IP: 65.X.X.216IPSec interesting traffic: Local - 10.50.80.0/24, remote - 198.168.189.0/24Static NAT for Exchange in place: Excahgne server can be accessed over Internet. We can RDP in to the
[Code].....
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Sep 27, 2012
I'm putting together a design for a new office with the following requirements:
10 VPN users.For Ethernet – 24 ports POE 10/100/1000
Probably go with VZ FIOS so EthernetAbout 2000 square feet so 2 WAP's should do it I'm thinking a CISCO881W-GN-A-K9 ISR with a SRW224G4P-K9-NA switch should do the trick. This will give me an integrated AP but I need a second one. Do I need to order an autonomous one or does the 881W do some sort of WLC function?
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Oct 30, 2011
CISCO881W-GN-E-K9 vs. C881W-GN-E-K9. What's the difference between these routers?
For example, the CISCO881G-K9 has a 3.5G ExpressCard Modem and the C881G has an embedded one with GPS and 3.7G in most versions. The C881G is, for all I know, the newer one. But for the two mentioned above, I can't find any differences at all. The C881 is listed in the Teleworking section of the data sheet. But there is no information whatsoever about any feature or license differences.
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Jan 17, 2013
We have 15 small branches with Cisco 881w in every office, they use VPN site-to-site to vpn- concentrator on V yatta. I launched cacti monitoring of cisco 881's CPU's Errors, Traffics, Non-uni cast, Uni cast. I see that on 10.00 pm in one brunch when nobody works there, CPU load reaches 50% and traffic rises up to 9mbs.
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Sep 26, 2012
i have upgraded a PIX 525 lately to a 5510 ASA, but i have faced a problem after this.One of the DMZ's are connected to a switch that is not connected to my VTP domain on a DMZ port.
with access-list to permit from host to host with all ports opened.my problem is that the outside client is able to initiate a windows VPN to a server that i have in the DMZ, BUT it disconnects after almost 10minutes. What might be the reason of the disconnection.Note, a cisco remote access VPN is also configured on the FW, and it doesnt disconnect.
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Apr 5, 2012
I have upgraded the configuration of about 650 Cisco devices (catalyst switches, routers, ASA, VGxxx, etc.) so as to integrate a new AAA server (Cisco ACS 5.3). This AAA server is bound with an Active Directory Server (MS Windows Server 2008 R2) for user authentication (only for admin purpose not for network access).Before this upgrade, the AAA server was Cisco ACS 4.1 (not bound to the Active Directory Server). Cisco devices are managed with a Cisco LMS 4.01 server. I modified the Network Level Login Credentials of the full privileged user of LMS because any caracters of the password were not accepted by AD. Therefore, in order to maintain the telnet connection availibility beetween the LMS server and the network devices, I had also to upgrade the appropriate device credentials in DCR. Finally I got the following issue when performing the credential verification : telnet incorrect !
When performing direct telnet connection with TeraTerm, I can reach the device and the user authentication is well performed by the ACS server and the AD server. Log files on the ACS 5.3 server show the accepted connection, the initiator and the tarjet device.But when LMS sends a telnet connection on to the same device (through a credential verification job), the ACS 5.3 does not receive the authentication inquiry (nothing in the tacacs+ log file). When performing AAA authentication debugging on the switch, the bind message repeats many times with no following authorization message (as requested also in debug). [code]
I reversed to the initial configuration of the switch (with ACS 4.1 as AAA server, not bound to AD) and performed a test with the same LMS server (with reversed credential data). The credential verification job is successful and the debug mode of AAA shows a correct negotiation beetween the switch and its ACS server : [code]
Indeed the ACS 4.1 authentication log file lists the successfull connection of the LMS server to the switch.In the two cases I exported the device credentials to a csv file to check the availability of each.
So, how to explain why a telnet session initiated by a terminal, can connect in both cases (ACS 4.1 ans ACS 5.3) to the switch and a telnet session coming from a LMS job can only connect to the ACS 4.1 server? When the switch "sees" an incoming telnet session request from everywhere, it must send it to the AAA server specified for authentication. I do not anderstand why the request from LMS is not sent to ACS (no record in log file, even according authentication deny.
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Jan 12, 2012
I have a brand new ACS version 5.2. Everything is working fine. I go to cisco website and download the following packages:5-2-0-26-8.tar.gpg
From there, I ssh into the ACS and performed the following: acs patch install 5-2-0-26-8.tar.gpg repos acs-52-patch That works without any issues. My ACS is now upgrade to 5.2.0-26-8 An hour later, when I tried to perform this: acs patch install ACS_5.3.0.40.tar.gz repository Upgrade_to_5.3.0. it is not working. I get this message: Failed to copy file 'ACS_5.3.0.40.tar.gz' from repository Upgrade_to_5.3.0 (Error -306).
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Jun 3, 2011
configure AAA (Radius server, access list) There are two devices An access point and cisco 881w. It is necessary to set up authentication through a radius server. You can configure detailed how to do this?
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Dec 8, 2010
Is the max wireless speed on the cisco 881w 54mbps even though it has 802.11n hardware? What about the 891w ?
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Jul 7, 2011
The 801 AP on my 881W reboots every other day or so, randomly, on its own. The router / AP works great otherwise, no other issues. I checked the error log and I see no indications of why it would be doing this.
ap#sh ver
Cisco IOS Software, AP801 Software (AP801-K9W7-M), Version 12.4(25d)JA, RELEASE SOFTWARE (fc1)
[Code]......
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May 21, 2013
How to upgrade the IOS of the Integrated wireless AP in a Cisco 881W using TFTP server (I do have software)Router side is not an issue it is the integrated AP that gives problem?
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Jan 24, 2013
We've got vpn-concentrator and 15 offices with 881w and 1941 isr connected vo it via ipsec. Our Asterisk is placed behind this vpn-concentrator in local network, so all traffice goes throung vpn tunnels. Is it possible to make QoS rules using just destination IP address of our Asterisk server?
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Nov 11, 2012
I have been given a new project at work, to configure a 881W for wireless capebilities. how to get it to work using local database for the users to authenticate against, but our goal is to authenticate against a radius server that we have in place for existing Juniper AP's.
I have looked at some documentation out there and I cant seem to find what Im looking for. What I need to find out is an example of how to setup a radius server so that the wireless user can authenticate against. I have found some docs on google but those go over radius server setups for logons to the router etc.
here is what I got so far
Building configuration...
Current configuration : 2005 bytes!version 12.4no service padservice timestamps debug datetime msecservice timestamps log datetime msecservice password-encryption!hostname 881W_AP!logging rate-limit console 9enable secret 5
[Code].....
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Feb 2, 2012
I have a Cisco 881W configured for wireless (just a PSK, nothing special). I can get out to the Internet OK and browse to everywhere except my own websites.
It runs on a connection that does not connect directly to my network, but our website is available to the world externally.
Now, from the router a traceroute and ping work fine to our website but from the wireless connection I can get to everywhere else on the web but our website. A traceroute just stars out. I'm using 8.8.8.8 as a DNS server and nslookup resolves the DNS.
I can't set a DNS server or domain server on the ap on the 881W so are there any commands I can use to see what's going on?
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May 16, 2012
I'm in the process of setting up a working VPN/Firewall setup on an 881W ISR. I have the firewall, NAT, and VPN working, and I'm able to connect remotely to my router. The problem I am having is that I none of my VPN cllients can connect to the internet. I suspect that my firewall rules may have something to do with this. Let me break-down what I have, and what I want to achieve:
1. My router is setup with VLAN1 (172.16.1.0/24) as the inside zone (in-zone), while my outside zone (out-zone) is FastEthernet4 (DHCP WAN Interface). I also have a guest zone (guest-zone) VLAN12 (192.168.12.0/24) used for my guest SSID wireless, which is NATed to the outside zone.
2. I have my EasyVPN setup using a Virtual Template Interface that terminates at the WAN interface FastEthernet4 (something tells me this should be changed). Should I terminate at VLAN1, or an interface or loopback on VLAN1?
3. I ultimately want the VPN users to be able to conenct to the local resources on VLAN1 only, while being able to get out to the internet. [code]
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Nov 30, 2011
is it possible to do a site to site with a Cisco ISR 881W --> to a Cisco 3060 concentrator head?
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Feb 23, 2011
is it possible to setup a Cisco ISR 881W so it connects to a Cisco ASA 5500 series head via network extension mode? We did this in the past with our PIX connecting to 3000 series concentrator.
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May 19, 2013
I wanted to load the factory defaults for my 881W so I could get a clean start. Following this Cisco article: [URL]. I used the following commands while tel netted in via an ether net cable to one of the ether net ports: router#configure terminal router(config)#config-register 0x2102router(config)#end router#reload System configuration has been modified. Save? [yes/no]: n Proceed with reload? [confirm] .
Once I hit enter to proceed with the reload, the router power cycled. From that point forward, I never got a link light or connection via my ether net cable to the router on any of the ether net ports (0,1,2,3). I can get a link light on WAN FE4, but no DHCP ip address to telnet in. I do not have a Cisco USB console cable, which is why I've been trying this via my ether net cable. Hopefully, I didn't ***** up the router.
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Oct 24, 2011
I upgraded our 3560-48-ps switch from c3560-advipservicesk9-mz.122-35.SE5.bin to c3560-ipservicesk9.mz.122-55.SE4bin and is having issues now.
Since I upgraded to the new IOS our older machines on the network can no longer connect to the domain and is not getting an IP address sh ip dhcp binding and sh ip dhcp conflict does not show any output, however all newer machines on the network received dhcp addresses without any problems and can connect to the network and internet.
For testing purposes I put the old IOS back on the switch and the older machines could connect again and received dhcp addresses.No other changes were made to the config.
I did a comparison on Cisco's website and both IOS's support DHCP. Not sure why the new IOS would not give any output when I ran the commands.older machines : Apollos and NCS (They all have XP service pack 2 with Intel 2.8 processors.)
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Apr 30, 2012
My employer provides me a Cisco 881W. I don't use the wireless features: my computer is cabled via Ethernet. I cannot administer the device, so I cannot disable wireless. I want to remove the 3 antennae and replace them with a dummy load or something else that will not radiate much.
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Jan 17, 2011
Just recently got a new 881W router. i have downloaded the 2.4 software upgrade. I go into the Office extend AP login and i get just a enter button. when i click on the enter button the AP page does not come up.
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Mar 30, 2013
1 router 881w with a site-to-site VPN connected to a switch and a wireless which allows internal users to access the VPN via wireless (this is like a backup, if the switch fails, then they can use the wireless). Everything's working fine so far. Now I want to configure a second WLAN for guest but I'm not really sure if this configuration will work:
ROUTER:
ip dhcp excluded-address 192.168.100.1 192.168.100.200
!
ip dhcp pool GuestNetwork
network 192.168.100.0 255.255.255.0
default-router 192.168.100.1
dns-server 8.8.8.8
[code]....
If it's not clear I want that everyone that is connected to the guest WIFI receives an IP address from the range I wrote before and then goes directly to the internet.
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