Cisco Routers :: RV082 And Packet Loss On PBX With Firewall Enabled?

Aug 28, 2012

Recent incountered an issue with our elastix pbx and packet loss. Noticed this morning that when I turn on the firewall on our RV082, packet loss begins around the level 3 servers I see in my traceroute, and then slow spread out to all hops. When I turn the firewall back off, all hops have no packet loss or less than 1%. The weird part is, previously, I had the firewall enabled, and never had this issue.

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Cisco Routers :: RV082 V03 Randomly Connection Lost When Firewall Enabled

Sep 11, 2012

Hardware: RV082 V03
Firmware: RV0XX-v4.2.1.02
Static routing: to

The unit is configured as internet gateway. 4 NAT ports are active. When firewall disabled all works fine. When firewall enabled I do get connection lost at random interval. In firewall only 4 rules added to the default 3 rules. The added rules are:

1/ permit port 25 to any
2/ permit port 25 to any
3/ permit port 25 to any
4/ deny any port 25 to any
I do get at random times connection lost when navigating with windows explorer on a PC with IP 192.168.1.x to a share on a PC with IP The same happens when copying files.  Sometimes it works, later it fails or reties are needed.  When the firewall is switched off all runs fine.

Ping from 192.168.1.x to allways give a <1ms response
Is there a RV082 perfomance problem or do I have a configuration problem?

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Linksys Wired Router :: RV082 Gateway Shows No Loss On Packet

Mar 25, 2011

I have RV082 in many locations and it is working fine.One location I just starting to have problem with packet lose (50 to 60 %)I ping between two location which i am having problem.Gateway to Gateway shows no lose on packet (reply with 20ms avg.)but router to router will lose packet 50 to 60 %.

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Cisco Routers :: RV082 VPN To ASA5500 Device Crashes When Keep-alive Enabled?

Dec 19, 2011

We have several RV082s here which are intended to connect to a central ASA5510 firewall. The VPNs are configured and do work basically, however in our test environment the RV082s kept crashing after an apparently unpredictable amount of time (sometimes after several days or even weeks). All the RV082 have the newest firmware installed (v4.1.0.02-tm).
When further investigating the issue, I found out that the crashes can be reproduced when enabling the keep-alive option on the RV082. When powering up the RV082, they boot, start up the VPN, and then they crash a few seconds after the tunnel has been established (one or two pings usually get through). When crashing, the RV082 becomes completely unreachable, ie no ping, no webinterface etc.
There is a note in the firmware release notes saying that enabling the keep-alive option would not work the way it should. However it seems that enabling that option lets the router completely crash after its next reboot. This makes the keep-alive option basically worthless, however we need this since the routers will get installed at remote sites with no personnel available there.
Is there any way to enable the keep-alive option without making the routers crash immediately after startup?

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Cisco Routers :: RV220W Packet Loss Over Wireless?

Sep 16, 2011

I am having issues where different laptops are dropping packets when communicating to the WAP on the RV220W. I have placed 3 laptops directly next to the router so there is no chance for walls to interfere. From each machine 1 at a time I perform a continuous ping. Here is a quick output from one of them:
Reply from bytes=32 time=3ms TTL=64
Reply from bytes=32 time=1ms TTL=64
Reply from bytes=32 time=3ms TTL=64


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Cisco Routers :: RV220W - Packet Loss (wired And Wireless)

Nov 8, 2011

I have a RV220W with the latest firmware ( and I loose about one in every 20-40 packets.
I have tried with both wireless/wired, on different ports, laptops, and Ethernet cables.
My configuration is fairly simple:
1.) I reconfigured the default subnet

2.) I setup a WAP on the same vlan (VLAN1)

3.) I setup a WAP on Vlan2 for guests
Other than that, settings are out of box (save a hostname/etc).
just purchased it, and am thinking I'll have to phone Cisco for RMA.... There is a similar thread where people noticed this on wireless (not sure if they tried wired as I have).  RV220W Packet Loss over wireless

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Cisco Firewall :: Intermittent Packet Loss Between Router And ASA 5510

May 11, 2013

We have Cisco router 2800 router which is directly connected to ASA 5510, till now there was no issue every thing was working fine, but from past 2 day's we are facing a problem, when we try to ping to any outside public IP their is a intermittent packet loss & same issue to the remote office through IPSec tunnel, We are able to reach our ISP router from outside whithout any issue & there is no packet Loss, if we try to reach the ASA their is a intermittent packet loss.

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TCP First Packet Loss?

Dec 12, 2012

i am implementing tcp as per rfc 793, i have one doubt, while sending first packet, if that packet lost means, tcp will wait for RTO and retransmit the first packet, and after got the ack for first packet, then only it will send second packet or without getting the ack for the first packet it will send second packet.

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Cisco :: Packet Loss Only Across The VPN?

Apr 18, 2012

My workplace has a UC-540 attached to a cable modem, attached to the world wide web.

When we make VOIP outbound calls through the standard ISP, there is no auditory packet loss sympton; however, when we make calls to out sister branch through our VPN, we experience auditory packet loss symptoms.

I would think the VPN should only be affecting the encapsulation of the data. To my understanding the VPN packets and non-vpn packets all hit the router at the same time, and transport over the web in the same manner. Why would there be packet loss over only the VPN??

--Regarding QoS, if a standard layer 3 device receives a VOIP packet encapsulated in a VPN, do the QoS bits in the VOIP packet get acknowledged, or are they hidden by the VPN encapsulation?

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Broadband :: Packet Loss Between 58 And 98%?

Mar 29, 2012

My ping is 35ms my DLS at 45.6 Mbps and my Upload is 4.51 Mbps. My Problem is that i am losing about 60 to 90 percent of the packets on a

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Outbound Packet Loss

Aug 10, 2011

For about the past 2 or 3 months, I have been experiencing outbound packet loss at about the same time every evening. That timeframe is about 7 PM - 10 PM. This is most noticeable on Teamspeak 3 because of the voice disruption that other users report to me.

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Random Packet Loss 100%?

Feb 19, 2013

I have recently switch internet to Time Warner. Since the day I got it, i have experienced random packet losses of 100%. I have called time warner and they are going to send a tech out. But i would like to know more about this before he comes. I have replaced the modem with a brand new one. Surfboard SB5101N from the one i was leasing from them. They both do the same thing. I have made sure all my Drivers are up to date. I have replaced the coax cable and Ethernet cable and ran my Anti Virus and Spyware program. It does it more during online game, I have reinstalled the game and was having no problems with the ATT Dsl i had before this.

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Packet Loss During Same Time Every Day

Dec 13, 2012

I'm having an issue with packet loss during the same time every day at 12:20PM. I checked scheduled tasks, ran wireshark, made a static ARP entry, and ran ping tests. The ping tests show packet loss only when pinging 1 DB server to 1 App server. When the packet loss happens everyone on the network connected to the DB gets kicked out of the DB. They are eventually able to reconnect but its annoying that everyday at 12:20pm they get kicked out. Ping tests from the DB to the Firewall stay constant. But when I ping from the App server to the DB it loses connection at 12:20pm and when i'm remoted into the DB server i get kicked out as well. It's like at 12:20pm the DB server stops incoming connections for some reason.

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Cisco Routers :: 881 With Firewall Features Enabled

Jul 13, 2012

I am doing a security assessment of an organization that uses 871/881 routers with the firewall features enabled.  I see the following commands defining packet inspection done by the firewall software.
-ip inspect name inet-users tcp
-ip inspect name inet-users udp
-ip inspect name inet-users icmp
What I am trying to define is the inspect name "inet-users".  It is obviously a constant defined by IOS as it is not defined anywhere in the configuration file like any other "variable" and does not generate an error.What does "inet-users" define?  I'm assuming it is all users using the interface(s) where the inspect commands are used, but is that correct?  The Cisco IOS manuals do not contain a reference to "inet-users" hence why I'm here asking.

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Cisco Routers :: RV042 - Firewall And SPI Enabled

Jan 14, 2013

this is regarding my RV042. Its firmware version is v4.1.1.01-sp (Dec 6 2011 20:03:18), unchanged from how I received it. I purchased less than a month ago. I have a problem wherein the firewall behavior is not what I expect it to be, where I expect only allowed ports/services to be open to a given private IP from the outside but am finding that all are open to that private IP!
Let me describe the current configuration. I am going to blank out all digits of the public IP addresses when discussing them except for the final digits for security reasons.Router's WAN1 is set up as static, X.X.X.189. This is part of my public IP block. WAN2 is disabled. One-to-One NAT is enabled. Three instances of it are set up. One, for example is (a private IP) mapped to X.X.X.180, a public IP, part of our public block. Forwarding is not enabled. There is no DMZ Host. That is set to Firewall and SPI are Enabled. Access Rules for the firewall are set up in addition to the default rules which are present to Deny all traffic with WAN1 and WAN2 as the source from any source to any destination. This to me means that unless I set up Allow actions, there should be no access from the outside, WAN1. As an example of one of my Allow rules, I have this:

Action: Allow
Service: HTTP
Log: Not log
Source interface: WAN1
Source IP: ANY
Destination IP: Single,
Time: Always

My problem: My expectation is that based on the One-to-One NAT setting, the public IP X.X.X.180 is now associated with the private IP, but nothing from public to private is allowed unless allowed by the firewall, which is only set to allow HTTP / port 80 to But the behavior is that is, as presently configured, open to everything from the associated public IP, not just port 80, but all ports! It is as if my firewall rules have no impact whatsoever.

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Cisco :: Packet Loss Due To Ping Priority

Feb 12, 2013

When I ping my video streaming host's IP address (the IP that they gave me where I can view my IP web camera's video stream), I get anywhere from 0% to 8% packet loss at various times of the day. They're claiming that there's no problem, that this is because this is a router and it's dropping ping packets due to "ping priority giving preference to more important network traffic."

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Cisco :: Packet Loss In Side Interface?

Oct 27, 2011

I had all kinds of packet loss and I was ofcourse suspecting my ISP. But then I tested pinging my internal interface and found that it has packet loss as well. I have about 10% packetloss to my interface with, I have the same thing from several different inside hosts. My inside rule is the implicit one, any, any. service IP.In the log I can see a teardown and build of the icmp whenever the packet loss accour.There is no packet loss pinging the outside interface from the internet.

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Cisco WAN :: Nexus 7K Ping Packet Loss

Nov 21, 2011

I am pinging a host from Nexus 7K.  I'm losing every 200th packet when I'm pinging the end host.   I don't see any issue with network connection.

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Cisco Application :: CSM Packet Loss WS-X6066

Jun 28, 2011

I´m having a problem/issue with my CSM. I have a WS-X6066-SLB-APC - Version 4.2(1), installed on a 6500, and for a while now whenever I ping the VIPs (vservers) I detect some packet loss (In 10.000 ping packets, I loose around 1%), and higher response times; If I ping the reals I see no issues, only with the L3 behind the CSM.

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Internet Is Very Slow - Packet Loss Is 100%

Mar 3, 2011

3 days ago it worked just fine but not anymore I've run a packet loss test and the result is 100% loss. I don't know why. The internet is really slow, it is unusual. I'm using wireless network. Oh, I'm using windows XP SP3 (laptop) I am not really good at computer and I'm wondering if this problem is caused by virus, malware of something like that.

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60-90% Packet Loss On Windows 7 Desktop?

Apr 5, 2012

I have a Windows 7 desktop (so it's NOT wireless) that is having problems with packet loss. Now, the modem is fine, I've tested 'pingtest' on some laptops and the packet loss is very minimal. I've tried reinstalling the drivers for the LAN controller, using a different ethernet cable, using the 'winsock' reset command, and I have no luck. This does effect upload times on YouTube, to where a minute long video takes an hour.

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Packet Loss / Internet Lag With Data

Dec 15, 2011

I started using Windows 7, on two different computers. I get pretty bad lag spikes while using Skype and playing online games. They occur about once per minute and last maybe one second. There is a "Network Throttling" fix floating around the internet which I have tried, to no avail. I don't know much more about computers than a basic understanding, and am completely new to Win7.

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Ping Test - 100% Packet Loss?

Nov 17, 2012

Pinging and had 100% packet loss; this was suggested in another thread. LAN connected at 100 Mbps BUT cannot access Internet! Windows XP HP desktop; Belkin N Router; Optimum Cablevision - Modem Scientic Atlanta "Webstar"

I am using my iPhone to access Internet.

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Tandberg 6000mxp Packet Loss

Mar 2, 2011

We have a tandberg 6000mxp on a network without QoS. We see packet loss on the tandberg counters and NOT on the network anywhere. A network trace also showed no errors.

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Packet Loss On Shooting Games But Not WoW

Jan 25, 2013

But I have finally diagnosed the problem. When I try to play games like Combat Arms, Arma II /OA, BF3 and run a ping test on my ping is steady, and my jitter is fine but the packet loss is ridiculous! I will have a packet loss of 90-100% causing the game to be unplayable. But when I run this test playing WoW I have 0% packet loss, steady ping, and good jitter. I am completely lost on what to do, other than contact my useless ISP that will not know what to do. I am really frustrated by this and am not sure what the cause of this is or what to do. I have been researching for over a week and have no where else to turn.

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Cisco Nexus 4 - Ping Gateway IP / Getting Packet Loss

Nov 2, 2011

In my network i have Cisco nexus 4 switches those are running as redundancy and fault tolerance. I have mulitple VRF instances are running, when i tried to ping the gateway IP (hsrp Virtual IP) witch same VRF instance it is getting packet loss.

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Cisco WAN :: 3825 - Packet Loss On Ethernet P2p Link

May 7, 2013

I have two routers, Cisco 3825 and 2811 connected via a p2p ethernet link. The two sides of the links have Huawei muxes with 100/ full duplex set on their interface. I am facing almost 40% packet loss but the supplier is unable to identify any issues at their end. We have tried setting different combinations of duplex and speed settings but no improvement. When set to auto/auto the interfaces are negotiating to half duplex and I am sure this is the cause of the packet loss. Also I heard of auto-negotiation on MUX ports but supplier confirmed no such settings but only 100 Full duplex. If the router iterface is negotiating to half duplex so I suppose there is some thing with the negotition problem with MUX and router port ?    
On C3825 I have a Gig interface whileas C2811 has fastEthernet. I guess Gig interface should not negotiate ? Is there a way to pin point the exact fault to supplier ? Also is there work around for this?

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Cisco WAN :: External Packet Loss From LAN Clients Through 857w

Jun 15, 2011

Internet usage is very slow when initially opening a site from LAN clients. Once  established it is OK.  If I ping a site from an LAN client by either host name or IP  address it takes about 5 seconds, drops the first packet then is fine  after that.  if I ping it again immediately  afterwards it is fine.  But if i wait 2 minutes and try again the problem returns.  So I would conclude that seeing it is the same  whether I use Host name or IP address it is not a DNS issue. Pinging from the router produces no fault at all.  [code] I can ping the router internal and external interface or any internal  ip or hostname from the LAN with no delay or hesitation so it is not  a switch interface or network card problem.Some sort of NAT issue maybe? [Code]

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Cisco Switches :: ESW-520-24P - VoIP Packet Loss Every 35 Seconds

Apr 14, 2013

We have a customer running a Asterisk based Phone system, using Snom 320 phones and a ESW-520-24P as their switch.
Recently we have been confronted with an issue where every 35 seconds their is a very obvious drop of audio for both parties of a call.  We know it is not the phone system as we have run tests directly over the BT copper lines that have no drops what so ever.  Unfrotunately when we introduce the LAN in any way, we get the drops every 35 seconds.
We are running the whole solution on 1 vlan, yes I know probably better to use two, but the Cisco cannot automatically detect the Snom 320 phones to swap it to another VLAN, which complicates using a VLAN setup.
I really need to work out how to stop these packet drops, but I am new to the world of Cisco and dont really know where to look or what to try.

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Cisco VPN :: 1811 / Packet Loss Via DMVPN Tunnel But Not Across WAN

May 12, 2011

Central Router (WAN: <--> Internet <--> (WAN: Dynamic IP) Branch RouterTunnel                                     Tunnel
Central router is a Cisco 1811 running IOS c181x-advipservicesk9-mz.151-4.M.bin.Branch router is a Cisco 1941 running IOS c1900-universalk9-mz.SPA.151-4.M.bin.
When I do a Ping test directly from the branch to central router over the Internet I have no packet loss:
branch#ping source GigabitEthernet 0/0 repeat 1000Type escape sequence to abort.Sending 1000, 100-byte ICMP Echos to, timeout is 2 seconds:Packet sent with a source address of!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!(...)!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Success rate is 100 percent (1000/1000), round-trip min/avg/max = 40/41/60 msbranch#
When doing a Ping test over the DMVPN tunnel (which is using the WAN IP as source) I see packetloss.
branch#ping source Tunnel 3 repeat 1000Type escape sequence to abort.Sending 1000, 100-byte ICMP Echos to, timeout is 2 seconds:Packet sent with a source address of!!!!!!!!!!.!!!!!!!!!!.!.!!!!!!.!!!!!..!!!!!!..!!!!!!!!.!!.!!!!!.!!!!!!!!!!!!.!!!!!.!!!.!!!!!!!!!!!..!!!!.!.!.!!!!!.!!!!!!!!!.!..!!!.!.!!!!!.(...)!!!!!!.!!!.!!!!.!!!!.!.!!.!!!!!!!!!!!!!!!.!!.!!!!!!!!!.!!!.!!.!.!!!!!...!!!!!!!!!!..!!!!!!Success rate is 79 percent (795/1000), round-trip min/avg/max = 40/43/568 msbranch#

interface Tunnel0 description Testing (DMVPN) bandwidth 10000 ip address no ip redirects ip mtu 1400 ip nhrp authentication testing ip nhrp map multicast dynamic ip nhrp network-id 1 ip nhrp holdtime 600 ip nhrp redirect ip tcp adjust-mss 1360 no ip split-horizon eigrp 1 tunnel source FastEthernet1 tunnel mode gre multipoint tunnel key 100003 tunnel bandwidth transmit 10000 tunnel bandwidth receive 10000 tunnel protection ipsec profile secure_profile shared
interface Tunnel3 description Testing (DMVPN) bandwidth 2000 ip address no ip redirects ip mtu 1400 ip nhrp authentication testing ip nhrp map multicast ip nhrp map ip nhrp network-id 1 ip nhrp holdtime 300 ip nhrp nhs ip nhrp shortcut ip nhrp redirect ip tcp adjust-mss 1360 no ip split-horizon eigrp 1 delay 1000 tunnel source GigabitEthernet0/0 tunnel mode gre multipoint tunnel key 100003 tunnel bandwidth transmit 2000 tunnel bandwidth receive 2000 tunnel protection ipsec profile secure_profile shared
Crypto parameters on both central and branch routers:
crypto isakmp policy 1 authentication pre-share
  crypto ipsec transform-set secure_transform-set esp-3des esp-sha-hmac mode transport
  crypto ipsec profile secure_profile set transform-set secure_transform-set
I disabled CEF on both the central and branch routers and no success.  The EIGRP neighborship appears to be stable.

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Broadband :: Local Network Another Pc Packet Loss?

Mar 18, 2012

my local network another pc packet loss

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Major Packet Loss When Particular Computer Is Connected

Nov 28, 2012

I've been having an unusual networking issue lately, where everything runs smoothly apart from when one user's laptop is connected to the WLAN. All users on the network get something between 20% and 60% packet loss, only when this user's laptop is connected. I've made sure all the TCP/IP settings are reset to default, I've reset the router to factory settings, but the problem persists. This only came on recently, and I don't believe anything changed.

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High Ping And Packet Loss In Game?

Nov 3, 2012

I recently moved from an old apartment in Downtown Montreal, to a suburb area, but still close to where I was before (10 km). I am using the same ISP provider, Videotron. The same speed. I was playing games perfectly fine before, but now something is really wrong. Whenever I join a server, my ping skyrockets up to close to 200, sometimes drifting to 130 but never going below... and often rising back up again.Keep in mind that I filter servers by their pings. I only join servers that display a low ping (although often I won't see any, when I refresh.. there they are). I'll see a server with 30 ping, join it, and be at 200. I'm mainly trying to play Chivalry Medieval Warfare.It's entirely unplayable. Not only is it impossible to properly time parries anymore, but I also get a lot of rubberbanding. I've tested the internet here, and the speeds are accurate. 10 mbps down, 1 mbps up. I am connected to a Linksys E1200 router. I've tried everything I can possibly think of.I went into the router setup, disabled the firewall, added myself to a DMZ, tried to forward every port for steam (although it didn't seem to recognize it as a program)... rebooted the modem, my computer, the router, tried a different Ethernet cable.. nothing is working. It's very depressing. Nothing has changed on my own computer in the move.

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