Cisco Routers :: VPN Tunnel Between 2 RV042 / SSH Drop Packet

Dec 14, 2011

here's my setup :
office 1 :
rv042 hw3
ISP:Obtain an IP automatically
office 2 :
rv042 hw3
VPN tunnel between both rv042, everything's fine but when i try to ssh from office 2 to an office 1's server, my connection drops.
When it drops, i can still ping pc in office 1, this is really strange!if i change the office 2 ISP to another provider (obtain an IP automatically) everything's ok !
i try to use another PPPoE ISP for office 2 and it's doing the same thing!I've also tried other rv042 in both locations with the same setup and it's doing the same thing, so it's not a router issue.
i've tried older firmware and it's doing the same thing, so it's not a firmware issue!

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Cisco WAN :: 1841 / Packet Drop In Ipsec Tunnel?

Oct 23, 2012

I have a 1841 router connected to an ISP (currently SDSL EFM 10Mbps through an ISP modem, the router and the model are connected with a FastEthernet interface). On another location I have a linux server.There is an ipsec tunnel (3des-sha esp) between the router and the linux server (actually done with a crypto mac).The router has a hierarchical QOS policy on the egress interface.When sending traffic from the network inside the router to the linux host without the ipsec tunnel, everything is working fine and throughput is correct.When sending traffic from the inside network to the linux host internal ip through the ipsec tunnel, some packets are lost and the traffic throughput decrease.When sending traffic through the tunnel in the reverse direction (from the linux host to the internal network), everything is fine.I looked at the QOS statistics and the dropped packets counters don't increase. I looked at the egress/ingress interface statistics and no packets dropped there.I lowered the MTU on the egress interface, but it didn't solve the problem. I played by sending various ping icmp packets size, but even small packets are sometimes lost.I tried to check the router CPU, but it seems relatively fine (<= 10%)I captured the traffic on both side, and I see the packets emitted, and then I can see that some of the esp packets of the corresponding side are not received, so it looks like the cisco router is the culprit. This 1841 router is running: 1841 Software (C1841-ADVIPSERVICESK9-M), Version 12.4(24)T4,How can I troubleshoot where and why those packets are lost?

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Cisco Routers :: How To Establish Tunnel Between Rvs 4000 And Rv042

Dec 16, 2011

how to establish tunnel between rvs 4000 and rv042 ?

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Cisco Routers :: RV042 - VPN Tunnel Between Two Remote Locations

Jun 27, 2012

I have configured a VPN tunnel between two remote locations using static IP addresses on two RV042 routers. The tunnel seems to work but the problem is that when the two hosts attempt to ping each other only one can successfully ping. One PC with IP address can ping across the network but the second PC with IP address cannot. These are laptops seperate from the intranet used to test the tunnel. Someone had suggested NAT may be the issue so I enabled NAT Transverse on the routers but still no luck. The following is the results from a ping test.

PC 1
Pinging with 32 bytes of data:
Reply from bytes=32 time=116ms TTL=63
[Code] ......

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Cisco Routers :: RV042 VPN Tunnel For Multiple Subnets?

Aug 5, 2011

We have 4 RV 042 routers and  cisco router at HQ, we have Site to Site VPN tunnels in between, All branch offices are connected to HQ via S2S VPN tunnels 24 HQ Branch 1 Branch 2 Branch 3 Branch 4
now lets say i am branch 1, i can access network but cant access network, means i dont have branch to branch connection, it should be through HQ, means my RV042 at brnach  should fwd all traffic to HQ for another branches also. Under VPN tunnel if i try to configure remote destination its not allowing me it says network overlaping with local network, how i can sole it, I know how to do in cisco, we can permit those networks in access lists.

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Cisco Routers :: RV042 Hangs On Reset If VPN Tunnel Is Established?

Sep 15, 2011

I was hoping that the latest firmware would fix my (2) 'bugs', but it did not.  We are using the RV042s at our remote medical clinics as an end-point VPN router to our Nortel 1700 VPN router, replacing our old Nortel Contivity 100s.When I try and do a reset when connected remotely via the WAN interface, the RV042 hangs and will only reset by re-powering.

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Cisco Routers :: RV042 To RV082 Tunnel / NAT-T And Slow Performance?

Feb 18, 2013

I have an RV042 VPN tunnel with an RV082.The RV042 has a public IP Address obtained by PPPoE, the RV082 has a public IP Address obtained via Static IP.The problem I see is a really slow performance. Both internet conections are idle and the performance is about 2 or 3 kbyte/s My question are if I should I enable any of this:

- Agresive mode
- NAT Traversal
- IP Compresion
- Dead Pear Detection
How can I troubleshot this slow performance?

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How To Test Packet Drop

Feb 4, 2013

| | |
|_______ |________|

DUT has redudant connections to IXIA. Im pumping traffic from IXIA and traffic takes PATH A .. When I shut PATH A, i expect traffic to shift to PATH B within 100ms (example). How do I test this ?

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Cisco WAN :: Packet Drop In E1 Link?

May 22, 2012

I having a basic query in troubleshooting E1 link , here im facing packet drop in the link and we are testing by providing local loop and remote loop from the CSU/DSU at local point and at  remote point . I have tried  ping test while the loop is given at local point and remote point ie i have pinged my local serial interface IP address (eg -local  & -remote ) in Remote Loop  i could see no errors and drops and also the traffic on the interface output and input is the same(eg input rate 1000bps and output rate  1000bps) .My query is that when i am pinging the local interface IP does the icmp packet  travels till the loop point  and comes to the same interface(like a boomerang) .

ICMP packet
R1         Local CSU/DSU             |  Remote CSU/DSU (remote loop given )
O-----------O------------------------------O |--------------------------------------O R2

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Cisco Routers :: ASA5520 And RV042 - Tunnel Get Connected But No Ping / No Traffic Between Both End Network

Sep 13, 2011

I configured ASA5520 and RV042 for site-to-site IPSec VPN tunnel.Tunnel get connected, but no ping, no traffic between both end network.
======= -ASA--------public, static IP address------Cisco 2821--------Internet -RV042-----public, static IP address------Cisco 2821--------Internet
ASA5520 config:
name VPN
interface GigabitEthernet0/1
nameif NET
security-level 100
ip address


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Cisco Routers :: RV042 VPN - Create Tunnel But Unable To Connect Using Windows Connection?

Jul 18, 2011

Im able to create a gateway tunnel with two rv042 routers in different locations  ( i can see the tunnel connected in the router) but the quick vpn utility is not working , i also tried to use the pptp as server as an alternative( im able to connect using windows connection to the pptp server but whenever I browse any of the four ip's allowed for the pptp server \ it takes me to the documents of the local computer....I attached the configuration for one of the routers it is the same as the other end , just the information is flipped.
Message was edited by: Adrian Torres

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Cisco WAN :: ICMP Packet Drop On Nexus 7018

Mar 9, 2011

I am running ping between two Nexus 7018 over WAN link ,and I can see some set pattern of packet drop(7.40 % drop) with MTU size 1500.When I ping between my 6500 VSS pair and same Nexus 7018 over different SP WAN link on diffrent location , I am still getting same kind of packet drop (8% drop) with MTU 1500. Has any one else come across this issue with Nexus?

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Cisco Switching/Routing :: 6509 Randomly Drop Packet

Nov 1, 2012

My workstation( directly connected to 6509_1 switch. 6509_1 is gateway with ip Sometimes routing stop working, but after 3-5 minutes all back to normal.When issue occur i can't ssh to 6509_1, but i connect to second 6509_2 ( and i can ssh to 6509_1 from it.Then form 6509_1 i try to ping my workstation Wireshark on my workstation show that packet arrive. My workstation reply on it, but switch not accept it.How it possible? As I say after sometime all go back to normal without any changes. [code]

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Cisco Firewall :: 887VA-W Keep Getting Drop Packet Error Message

Jul 13, 2012

I have an 887VA-w connected at home. I am using ip virtual-reassembly an all interfaces (dialer and all internal VLANs), I am also using CBAC (currently setting up ZBF). The issue I am having is that I keep getting drop packet error messages and the reasons can differ. Below are some of the outputs I recieve: [code] I have done a show ip virtual-reassembly on all the interfaces and the counter is shown as 0.

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Cisco Switching/Routing :: Trigger Packet Drop On WS-C4948

Feb 25, 2013

I am running  (cat4500-ENTSERVICES-M), Version 12.2(53)SG2 on the switch. I have a scenario where I have 3 end user equipments connected to a Cisco 4948 L3 switch. At the switch end port 1/46, 1/47, 1/48 are the terminating points for these 3 devices . I have added these three ports to VLAN140 (switch port access vlan140 on the gig interfaces).

The device connected to 1/46 is the one I'm testing some signalling features on. My requirement is to have intermittent packet drop on this interface so that my signalling associations would go down now and then. I'm trying to simulate a real-time network congestion/latency/packet drop in a simple manner.

I do not want to shut/no shut the 1/46 intf to cause this. Some way to achieve intermittent packet drop on this gig1/46 intf ?

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Cisco Switching/Routing :: 3845 Output Packet Drop In Some Of Interfaces

Nov 27, 2011

In my cisco 3845 router I can see output packet drop in some of the interfaces.I suspect that router is processing packet beyond its mix throughput limit. Moreover when i run show int fax/y switching command I can see packet drop by RP process.

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Cisco Switching/Routing :: 3950 - High Latency And Packet Drop Towards Access Switches?

Jan 27, 2013

My network Infrastructure consists of 2 core switches(cisco 3950, 24 port) and 3 access switches (cisco 2960G, 48port). No distribution layer.Both Core switches are connected to the BVI of a VPN router.PVST is running in all switches. The STP results are all good. We have 3 VLAN's in the LAN an IP routing is enables in the core switch. The network diagram is attached.
The issue we are facing is that , we get intermittent packet drops while pinging towards the access switches, and there is always a higher latency towards these assess switches.These issues are present even with no other users using the LAN. But these issues are not present while pinging towards the GW.
I guess, it is because of this, we have issues the accessing file server in the LAN. How do we go ahead with the troubleshooting. Will upgrading the IOS resolve this.The present version details is..
WS-C2960G-48TC-L   12.2(44)SE6           C2960-LANBASEK9-M

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Cisco Switching/Routing :: 6500 Ping Packet Drop From Core-Switch To Directly Connected Server

Oct 24, 2011

I have an Cisco 6500 CS and there is a Cisco Unified Communication Manger Server connected directly to the Core Switch.I tried to change duplex and speed ( fix and auto ) for both sides, but the same problem.

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Cisco VPN :: Packet Lost In VPN Tunnel Between ASA 5510 And ASR 1004

Jun 28, 2011

i just configued a L2L tunnel between ASA 5510 and ASR 1004. tunnel is up but got serious packet lost (more than 70%) and isakmp always up-down intermittently.i compared parameters on both sides again and again but no luck. [code]

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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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Cisco Switching/Routing :: 887 Router - 50% Packet Loss On GRE Tunnel

May 22, 2013

We have a site were we have a 887 cisco hsiung a GRE tunnel
When pinging anything froom the tunnel source to the tunnel dest on the local lan we get a  50% packet loss
Protocol [ip]:
Target IP address:

replicated the setup exatly in our lab  and it works 100% with exactly the same config.

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Cisco VPN :: 2921 - IPSec Tunnel Random Packet Drops

Mar 15, 2013

I'm trying to troubleshoot a random packet drop issue for an IPSec tunnel between two VTIs. For over a month, we didn't see any issue, and starting today, we have up to 30% packet loss across an IPSec tunnel.
After some analysis, I concluded that the packet loss happens somewhere on the path from the uc520 to the 2921. Packet counts show up correctly on the uc520 physical egress interface, but the packet count is low on the ingress interface on the 2921.

Pings outside the tunnel along the same path are fine.
I also cleared the tunnels on both ends and after they reestablished, the issue was still present.
Any pointers on finding where the packets get lost?
rr-hq-2921#ping source g0/1 rep 100         
Type escape sequence to abort.
Sending 100, 100-byte ICMP Echos to, timeout is 2 seconds:


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Cisco VPN :: VPN Tunnel Between ASA5550 And RV042

Jul 5, 2012

we are trying to establish VPN tunnel between ASA5550 and RV042. The tunnel is connected  but I cannot access any resources that are behind ASA5550. I can ping the servers but that is about it.

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Cisco VPN :: RV042 Tunnel Inactivity Disconnect

Oct 16, 2011

I have VPN Gateway to Gateway VPN tunnels set from my central office to four remote sites. The tunnels have always been problematic. Started out with five Linksys RV042 v2 devices these had problems with handshake, sometimes would disconnect during this process and had to click disconnect button on either device and this wouold force the tunnel to rebuild. Recently upgrade central device to a Cisco RV042 v3 device. Good news is that this seems to have corrected the handshake issue but now each of the remote sites are having problems during periods of inactivity losing tunnel. The staff at the remote site indicate that they have to close out application and restart router to rebuild the tunnel.

All tunnels are Gateway to Gateway static IP addresses. They all will connect and behave as expected until they reach a certian period of inactivity. I have searched all over Cisco, Linksys, and Google have seen problems similar but no consistant or logical solutions so I thought since I am slowly upgrading my network from my initial equipment which was truely purchased based on cost alone to adding more Cisco equipment. However since this is among the first of my upgrade moves and the improved equipment is creating more problems than my older less expensive equipment I needed a solution to the problem before submitting additional PO's to upgrade switches and firewall products.

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Cisco VPN :: RV042 - Cannot Route Traffic In The Tunnel

Jun 6, 2011

I have a two RV042 VPN Router, I successfully connected the IPSEC tunnel. I cannot route Traffic in the tunnel. See the diagram.
MAIN Network 
RV042a     WANa       <<------------------------------->>    WANb    RV042b
 a.a.a.2                                                                            b.b.b.b 
In this manner the network of b.b.b.b wil connect to the Main Network 10.252.x.x, unfortunately I can't pass traffic to RV042b going to RV042a. Everytime I trace the route, the traffic goes outside the Internet not to RV042a.

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Cisco Firewall :: VPN Tunnel Between 5510 And Rv042?

Nov 27, 2012

I don't know if this is in the right section, but I cannot set up a vpn tunnel between an asa 5510 and a cisco rv042 router. I believe the problem is because i need to set up a nat exempt rule on the rv042 route but don't know how.

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Sep 13, 2012

configure ip-sec vpn tunnel between ASA5525x and RV042

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Oct 17, 2012

I am using a Cisco RV110W (Firmware 1.2.09) in a branch and I would like to create a VPN Tunnel to another site that has a Cisco RV042 (firmware v4.2.1.02)
What would be the correct Configuration? the current configuration I am using is
in the RV042 i am using
Check Enable 
Local Group Setup
Local Security Gateway Type : IP Only
IP Address : RV042 Pulbic IP address


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Cisco VPN :: RV042 / Establish A IPsec Tunnel To A Large Organization

Jul 18, 2012

I have a client that needs to establish a IPsec tunnel to a large organization. They will not forward any traffic to an IP using private reserved IPs. However I am not finding another way to accomplish this. I tried ipsec to the router and using a second IP to a 1:1 Nat but it will not pass the traffic and would seem really insecure from the public internet. 1:1 Nat does work from the public internet but not over the tunnel.I have an RV042 a /29 block of IPs. I am at a loss of how I can accomplish what they want without allowing a private IP.

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Jul 24, 2012

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Cisco VPN :: PPTP Tunnel To Linksys RV042 Not Working Through 2620 Router

Jan 9, 2012

I have a remote location that has a Linksys/Cisco RV042 router [URL] that allows PPTP connections based on username and password combinations. There are no intermediary routers between this device and the internet - only a DSL modem. A secondary WAN connection is not present.
I am able to dial into this VPN using the Windows XP and Windows 7 dialers from any of my local free-wifi locations(e.g. Starbucks). I WAS able to connect to this VPN connection from my house when my home router was a Buffalo brand router.
I have replaced the Buffalo router with a 2620(non-XM) that is connected in ROaS fashion to a 2950 switch. I need some guidance on what in my config is not allowing me to connect to this remote site.
Home network info: Local subnets : 192.168.x.x
Remote network info: Local subnet : 10.214.x.x
The Windows XP dialer client indicates that the username and password challenge is where the connection fails. It ultimately gives me the error code 619. I have performed a Wireshark packet capture of an attempt to connect from ip This packet capture shows multiple "Configuration Request" packets being exchanged between the two endpoints, but does not ever show an exchange of authentication.
My nat translation table shows an entry for both a GRE tunnel as well as port 1723 between and the WAN port of the RV042 when attempting to establish this VPN.
I have attached my 2620 configuration for your review.

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Apr 2, 2012

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Dec 7, 2011

i have 2 rv042 with a vpn tunnel between them.the problem is that i can't access https over the VPN !if i telnet 443 through the VPN, it's not working either. if i telnet 443 in my network it's working so it's reall the VPN tunnel the problem.

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