Cisco WAN :: Network Slow Down With DmVPN Tunnel On 2811 Router?
May 15, 2013
We are facing network heavy and slow performance at one of our remote site, we are using Cisco2800 series router with same IOS on either of the sites.Our WAN network is running on BGP with EIGRP configured and tunnels were configured on either of the sites. As part of the testing I have removed the tunnel to see the performance was ok from Head office to remote branch and the WAN network is getting heavy and slow down when we put the tunnel back in hub and spoke.
quick info
Cisco 2800 Series router
IOS: (C2800NM-ADVIPSERVICESK9-M), Version 12.4(15)T1, RELEASE SOFTWARE
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Nov 15, 2011
I configured a 2811 series router for dmvpn. My two tunnels are up but one of the tunnel is flapping with this message.
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Nov 20, 2010
I´m trying to config a wccp web-proxy in a ISR 2811 at branch network. I have an Iron Port at Head-Quarter.
The idea is that the users at branch network, transparently forward http traffic to Iron Port at Central-Office and from them go to Internet.
The communication between sites is over DMVPN. I have two GRE tunnels running OSPF.
The Iron Port is configured as wccp v2 transparent redirection with forwarding method L2 or GRE an retunr method as L2 or GRE.
I receive packets on the branch router "Here I Am" but it get a message on debug:
Nov 21 19:26:07.067 GMT-2: WCCP-EVNT:D10: Here_I_Am packet from 172.16.10.10 w/bad fwd method L2, received indirectly via Tunnel1Nov 21 19:26:07.067 GMT-2: WCCP-EVNT:D10: Here_I_Am packet from 172.16.10.10 with incompatible capabilites
Nov 21 19:46:07.035 GMT-2: WCCP-PKT:D10: Sending I_See_You packet to 172.16.10.10 w/ rcv_id 0000004F
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Aug 30, 2011
setting up IPsec for a DMVPN between a 2811 and 2951s in a test lab. I have enabled IPsec on the hub (2811) but I am unable to do so on either of the 2951s. After researching, it seems that I may have the incorrect IOS for this, but I am at a loss which IOS I should be using. Currently the 2951s are on "c2951-universalk9-mz.SPA.151-2.T2.bin" and the only crypto options are(config)#crypto ?
ca Certification authority
key Long term key operations
pki Public Key components
while on the 2811 I get:
WIN-T(config)#crypto ?
ca Certification authority
call Configure Crypto Call Admission Control
ctcp Configure cTCP encapsulation
dynamic-map Specify a dynamic crypto map template
engine Enter a crypto engine configurable menu
gdoi Configure GDOI policy
[code]...
These are all hand me downs?
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Feb 8, 2011
We have about 200 spokes (2811 routers), each one connected to two hubs(7206VXR with NPE-G2) via a separate DMVPN. DMVPN is over MPLS cloud provided by the local operator. On the hubs we get very frequently these type of messages
.Feb 9 16:00:10.402: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 200: Neighbor 10.X.X.X (Tunnel3) is down: Interface Goodbye received.Feb 9 16:00:11.658: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 200: Neighbor 10.X.X.X (Tunnel3) is up: new adjacency
On the spoke
Feb 9 13:36:48: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 200: Neighbor 10.X.X.X (Tunnel0) is down: holding time expiredFeb 9 13:36:51: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 200: Neighbor 10.X.X.X (Tunnel0) is up: new adjacency
I think the default eigrp hello and holding timers (5,15) are not suitable since these are wan links.
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Apr 25, 2013
i have a general Question regarding buildings SA´s between two peers.Can I establish more than one SA between two Peers with the same IP Address?Actually I have 3 DMVPN´s running in parallel in different VRF´s using the same SA.They have all the same IPSEC encryption AES256.Now I need to reduce the encryption to 3DES in one of the three DMVPN´s.Is that possible or do I need a differnet IP Address so that the SA Pair is unique?Thats how I stared, with a Phase 2 failure that it is not acceptable.
crypto keyring preshared
pre-shared-key address x.x.x.x key ....ncvnbxcnbLsaYiKtxc4ex4U99Tn...
pre-shared-key address x.x.x.x key ....qerqwerJLsaYiKtxc4ex4U99Tn...
pre-shared-key address 0.0.0.0 0.0.0.0 key ....JLsaYiKtxewrc4ex4U99Tn...
[code]....
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Jul 8, 2011
We have a 6 spoke DMVPN setup. Five of the six spokes work fine. On the 6th spoke, a 2911, we have created a Tunnel0. Other spokes and the hubs can ping it's ip, but it can't ping itself. When we do a show interface it shows the Tunnel 0 is up, but the protocol is down. What does that mean?
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May 12, 2011
Scenario:
Central Router (WAN: 1.1.1.1) <--> Internet <--> (WAN: Dynamic IP) Branch RouterTunnel 172.31.254.1/26 Tunnel 172.31.254.9/26
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 1.1.1.1 source GigabitEthernet 0/0 repeat 1000Type escape sequence to abort.Sending 1000, 100-byte ICMP Echos to 1.1.1.1, timeout is 2 seconds:Packet sent with a source address of 192.168.0.100!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!(...)!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!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 172.31.254.1 source Tunnel 3 repeat 1000Type escape sequence to abort.Sending 1000, 100-byte ICMP Echos to 172.31.254.1, timeout is 2 seconds:Packet sent with a source address of 172.31.254.9!!!!!!!!!!.!!!!!!!!!!.!.!!!!!!.!!!!!..!!!!!!..!!!!!!!!.!!.!!!!!.!!!!!!!!!!!!.!!!!!.!!!.!!!!!!!!!!!..!!!!.!.!.!!!!!.!!!!!!!!!.!..!!!.!.!!!!!.(...)!!!!!!.!!!.!!!!.!!!!.!.!!.!!!!!!!!!!!!!!!.!!.!!!!!!!!!.!!!.!!.!.!!!!!...!!!!!!!!!!..!!!!!!Success rate is 79 percent (795/1000), round-trip min/avg/max = 40/43/568 msbranch#
Central:
interface Tunnel0 description Testing (DMVPN) bandwidth 10000 ip address 172.31.254.1 255.255.255.192 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
Branch:
interface Tunnel3 description Testing (DMVPN) bandwidth 2000 ip address 172.31.254.9 255.255.255.192 no ip redirects ip mtu 1400 ip nhrp authentication testing ip nhrp map multicast 1.1.1.1 ip nhrp map 172.31.254.1 1.1.1.1 ip nhrp network-id 1 ip nhrp holdtime 300 ip nhrp nhs 172.31.254.1 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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Apr 23, 2012
So in our DMVPN network, we have this Cisco 3845 hub router that is connected via a DS3 to the Internet, and our spoke sites usually have a broadband connection that typically have a maximum of 1Mbps upload capacity. We are getting ready to add a few more sites to our network that are connected to the Internet with 10Mbps upload speeds (and 50Mbps download). Spoke site routers are usually 800 series ISRs. We have seen spikes of 8-10Mbps on the hub router so far. So the question is that a site with 10Mbps upload speed transmit to the full capacity over a DMVPN tunnel or is it limited by other factors? What are those factors?
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Nov 22, 2012
I am having a hard time trying to configure DMVPN with the tunnel being sourced via a loopback interface. All routers are Cisco 886 routers which don't have L3 ports.That is why I used SVI interfaces, and have configured the L2 ports (Fa0, Fa1, etc.) with the command switchport access vlan.The problem is that I am receiving Invalid SPI error's only on the Hub router and I have no clue what could be the problem, because they use exactly the same parameters for IPsec. [code]
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Mar 21, 2013
I have a setup where a spoke (cisco 1841) is sending a multicast feed to a hub (cisco 2951) via a DMVPN tunnel on the Internet. The feed arrives on interface fa0/0 of the cisco 1841 and is forwarded to the tunnel interface. It is about 160,000 kbit/s and 18 pps. This always looks the same:
cisco2951-1-hub#sh run int tu10
!
interface Tunnel10
description DMVPN TUNNEL
[Code]...
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May 3, 2013
One of the customers has deployed Cisco 7609S in their infrastructure for Branch/RO connectivity. When we tried to configure per-tunnel QoS with DMVPN for MPLS connected sites, we came to know that Cat 6500 and Cisco 7600 series routers don't support this feature.
Now, we are looking for suitable replacement of Cisco 7609S. I found a document for configuring above feature on Cisco ASR 1000 series routers, but it has many restrictions always.
We are now looking for
(a) suitable platform in the league of Cisco 7609S which support above feature.
(b) suitable technology replacement of DMVPN with minimum restrictions.
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Jun 27, 2011
I am trying to spec out some routers for a small DMVPN network.I was thinking 2801's for my hub routers.will these run DMVPN out of the box or do they need additional hardware modules?according to the below linkyou need a "AIM-VPN/SSL-2" module in order for it to work, but then according to"The Cisco 2800 Series supports IPSec Digital Encryption Standard (DES), Triple DES (3DES), Advanced Encryption Standard (AES) 128, AES 192, and AES 256 cryptology without consuming an AIM slot."
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Mar 10, 2013
I have working internet behind cisco 2811 on all vlans however upload speed is very slow and ftp server download is slow and times out, previously when directly connected to modem/router was fine? This is router config below:
Current configuration : 2229 bytes
!
! Last configuration change at 02:21:18 UTC Tue Mar 12 2013
version 15.1
service timestamps debug datetime msec
service timestamps log datetime msec
[code]....
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Sep 7, 2011
I'm seeing on an IOS VPN Tunnel interface which keeps going down and then back up...
We have a Cisco 2811 acting as a VPN Hub router on the backbone, which connects to various client sites over VPN. Of the 7 VPNs configured so 6 work well and are generally trouble free. The VPN interface on the other VPN keeps going down ,multiple times throughout the day, just recently the client has been noticing loss of connectivity. The remote router is managed over the VPN so there is always some kind of traffic over it.
*Sep 7 06:40:53.631: %LINEPROTO-5-UPDOWN: Line protocol on Interface Tunnel111, changed state to down
*Sep 7 06:41:23.991: %LINEPROTO-5-UPDOWN: Line protocol on Interface Tunnel111, changed state to up
[Code]......
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Jan 10, 2011
ISP on each circuit cannot provide more than 3MB, so soon will get three circuit each of 3MB. ISP recommends to terminate all the links on Layer2 switch and have a trunk to the Router. I need all experts opinion on this proposed setup. We currently got 2811 with two GigaEthernet ports. We plan to have three GRE over IPSEC Tunnels (One tunnel for each circuit) to load balance/load Share/redundancy.
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Jun 10, 2013
We have two Cisco 2811 Routers setup with a GRE tunnel that we would like to constrain the bandwidth on to replicate a satellite connectinon of 400 kbits. We tried the bandwidth command 400, but from what I understand that is only for routing metrics and not actual speed of the interface.
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Aug 5, 2012
A multipoint GRE (mGRE) and IPSec tunnel is built between two routers. The topology of the device is briefied below:Configuration in End Router: This is a cisco 2811 router. Amoung 2 ethernet interface ,one is using for LAN and one is for WAN. In WAN part , we have configured mGRE (Tunnel1 and Tunnel 2)by creating sub-interface of the router. From the interface ,we terminating the link to MPLS cloud from there its pointing towards our core router.From End router we are advertising the path through EIGRP and from the cloud BGP advertisied to the core router.[code]
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Dec 18, 2011
I recently inherited a small network. There is an existing 1.5mbps Internet connection (fa0/0) (includes MPLS as well/same provider). We added a new ISP that allows for 50mb down/5mb up. I added the new ISP to fa0/1 and modified the NAT overload statements accordingly. I alo changed the default route to ONLY use the new, faster ISP connection. Using speedguide.net, I am only able to get 6 to 10mb down, most of the time. if I plug a laptop into the cable modem then I get 37 to 50mb down. Why the 2811 is so slow?
I have attached the config and various show outputs (nat, sh ver, memory, etc.). the file called "latest logs" contains a "sh ip traffic, sh int switching and a sh proc cpu sorted". [code]
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Feb 21, 2013
I have my router connected to my ISP, but for some reason I am getting really slow internet connection compared to a home Linksys router. I can only think it may be to the fact my port is set to auto speed and auto duplex.
Sometime the websites are fast, other times slow. Cannot seem to pinpoint the reason since my code is so basic.
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Jun 8, 2011
I got a stange vpn problem, just added a new vpn tunnel to our ASA5510 and then the users report that the traffic through the tunnel is very slow, when I try it myself I get a speed like 50kb/sec to the internal server.If I use our regular tunnel or any other tunnel the speed is just fine. I´ve added the new tunnel in the same way as the other tunnels, that is thorugh ASDM vpn wizzard.
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Apr 26, 2013
I have 2 Cisco routers , 1841 and 2811 , I need to setup site to site VPN , but i dont now some how it just does not seems to be working ,
Find attached the Configuration along with the
<----- 172.31.1.0/24----- DG:172.31.1.1>Cisco 2811<Dialer1 -----//Internet//----------Dialer1>Cisco1841---< DG:10.236.5.254-------------- 10.236.5.0/24--->
Find attached command executed on each router in the below order
1) show ver
2) Show run
3) show logging
4) show crypto ipsec sa
5) show crypto isakmp sa
Debugging enabled on routers are
1)Debug Crypto Isakmp
2) Debug Crypto Ipsec.
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Jan 8, 2013
I am experiencing slow throughput on a L2L IPsec tunnel that we have between one of our offices on the west coast (WC) US and another on the east coast (EC) US. The tunnel endpoint on the WC resides on a 5510 and a 5545x on the EC. The DIA circuit speed on the WC is 45 Mbps and 200 Mbps on the EC. The throughput of this IPsec tunnel is maxing out at approx. 4 – 5 Mbps. The utilization of the DIA circuits at both offices is under 5% when running various FTP test transfers. Both devices have low memory and CPU utilization.
We have a 2nd office on the EC (45 Mbps DIA) which I built a tunnel on a 5510 with the WC office and it is experiencing the same slow throughput. In covering all my bases we have a colocation facility on the WC and in building a tunnel between the 2 WC offices I WAS seeing close to full line rate speeds over the tunnel. Additionally, I built a tunnel between the 2 EC offices and I saw full line rate speeds. With the physical distance between the WC & EC offices I would expect some loss in throughput speeds but I would not expect it to drop as low as 4 – 5 Mbps. In thinking something may be up with the 5510 in our WC office we shipped a 5505 to the WC office and we built the same IPsec tunnels on it and it is experiencing the same.
In working with our support vendor to try and solve the WC <-> EC throughput issue they had me change the MTU, TCP mss, DF-bit, types of encryption/hash on the IPsec tunnel but nothing has resolved it. We are not showing fragmentation or PMTU issues on the tunnel. In contacting the ISP of our WC office they mentioned that they do not have any type or rate limiting in place. Our WC ISP had a CCIE review our configurations but nothing was found.
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Nov 24, 2011
There use to be Cisco 851 routers, but lately these routers are replaced with Cisco 861-K9 routers, and these 861 routers doesn't support DMVPN, instead 851 use to be.
Is there any license file we can upload in 861 router for DMVPN capability, if yes may i know the SKU # for that. We have some customers having 6-7 locations and they are planning to have 2 more locations, we implement already DMVPN in there network, if we go with the 87X or 88X router there price is almost double the price of 861.
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Aug 18, 2011
I have a asa and Cisco 2811, needs to build a site-to-site ip sec tunnel between them. Due to a requirement need to encrypt inside traffic, i need to apply on the inside interfaces on both devices to build the tunnel.
I don't see a problem but just want to check if it would work on terminating on Inside interfaces on both ip sec peers.
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Aug 7, 2012
how we can select a network module for 2811 router?gigabit or ethernet Hwic?
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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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May 24, 2012
I have to configure router 2811 for Data and Voice network.However I have only one Fast Ethernet interface. [code]
what else do I need to configure on switchport on which Avaya phones are connected.And is there any extra command, i need to configure on the router and 2950 switch.
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Aug 7, 2011
We have ASA 5540. We setup Site-to-Site VPN and Remote Access VPN (Cisco VPN client). If are running full tunnel on the Cisco VPN client, the internet access is slow. For example, when we are running full-tunnel, the internet speed is 16 Mbps based on Speedtest.net. When we go to Speedtest.net, some of the graphics do not load. If we are running Split-tunnel, the internet access speed is 78 Mbps based on Speedtest.net and the Speedtest.net web site loads all the graphics.
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Sep 10, 2012
What router would you choose to setup 1500 dmvpn tunnels (mGRE/ipsec)? so this router will be my hub and the hub will have 1500 tunnels.this router with this many tunnels will have to be able to provide excellent service to all spokes/tunnels.the spokes will mainly use the tunnels for business, transfering small files and some email I would say they may transfer 500megabyte of data per day but that's the absolute maximum.
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Apr 15, 2013
Trying to setup a DMVPN on out existing equipment that is currently running all point to point vpn connections. basicly its not working. my best guess is something with the config is interfering but i'm not sure the remote router (881) is always comming back with MM_NO_STATE and the main router(2901) is either MM_NO_STATE or MM_SETUP.
I added the config for the 881, 2901 and a debug crypto isakmp and debug crypto ipsec from both routers. I have verified the Keys are correct and it is not blocking port 500. if i issue a sh crypto isakmp policy they are the same on both routers. if you need me to post anything else i will, one note i removed the configs that were part of the point to point tunnls on the 2901 router.
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Jun 21, 2012
I configured dmvpn at cisco router 2900. one hub router and 3 spokes. all of them are working normally but tomorrow i see one error at at one spoke router.
error:
Maximum Tx Bandwidth limit of 85000 Kbps reached for Crypto functionality with securityk9 technology package license
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Jan 20, 2012
I have setup DMVPN and EAZYVPN on one router. Tunnel interface on Spoke one and Spoke two are up/up and show crypto ISakmp sa shows both tunnels are in idle. However, tunnel to Spoke one(10.10.1.1) keep bouncing on and off(see below). Every 30 sec or so, the tunnel gone back to IKE phase while tunnel for spoke two(5.5.5.1) still leave active. THe configuration on the HUB side is the same for both spoke!! show crypto ipsec sec shows both side has the same life time(IOS default). Could that be an IOS debug on the spoke one?
Hub :
Cisco IOS Software, 2800 Software (C2800NM-ADVIPSERVICESK9-M), Version 15.1(3)T2, RELEASE SOFTWARE (fc1)
HUB#sh crypto ipsec security-association
Security association lifetime: 4608000 kilobytes/3600 seconds
Spoke one:
Cisco IOS Software, C2600 Software (C2600-ADVSECURITYK9-M), Version 12.4(8), RELEASE SOFTWARE (fc1)
[code]....
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