Cisco WAN :: 3845 Bandwidth Limitation On DMVPN Tunnel Interfaces
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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Oct 20, 2011
I have the following setup:
Cisco 1921 is my core router and connected to it is a 30 Mbit fiberline
VLAN1
VLAN2
Now, the thing is that i want VLAN2 to have a 5 Mbit bandwidth limit to Internet but full speed to VLAN1.
I have played around with Rate limit without success.
I also have access to cisco switches that can limit the bandwidth.
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Feb 12, 2012
I have a cisco 2950 switch, connected with 4Mbps of internet and number of users will access the internet. There is no restraction on bandwidth limit for users, if any body use high download the remaining users are facing the slow browsing problems.
So, if i can put a bandwidth limitation for every users the problem will be solved. how to restract the bandwidth on user bases.
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Feb 21, 2013
I'm intending to purchase a switch for work,and I need to limit the bandwidth of one of the ports to 25 Mbit upload and 25 Mbit download (we have 100/100 Mbit connection and the customer is only paying for 25). I been trying to find information on how this could be "properly" done and what kind of switch I need to buy. As far as I have understood, most L2+ switches support outbound rate limiting, but not inbound, and as I only want the customer to have 25 mbit up and down, I need both.
I been looking at a Cisco Catalyst 3560 switch, and I'm first and foremost wondering if I can limit the inbound AND outbound bandwidth on this switch? Perhaps it can even be done on a simpler, cheaper, switch - as I rather not spend more money then necessary?
Lastly, how to do it, limit the inbound and outbound bandwidth on a single port (perhaps on the above mentioned switch, if possible), to 25 Mbit?
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Feb 4, 2013
We have 2 Hubs (Cisco 7200 - 2 for redudancy). Every customer have a Spoke (Cisco 881). The Spokes are 24/24 connected to the 2 hubs (2 dmvpn tunnels) to give us the access to our equipments of monitoring and for support. Every Spoke have a NAT table with a specific NAT range for every Spoke. Like this we can reach every devices with a unique IP inside the VPN.For example:
- Spoke_001 have a NAT IP range of 10.80.0.0 255.255.254.0
- Spoke_002 have a NAT IP range of 10.80.2.0 255.255.254.0
...
To connect to the hubs with our laptops, we are using the Cisco VPN client. We have different profiles created in the hubs:
- Admin profile with an ACL that allow the connectivity to every Spoke
- Integrator profiles: that allow the connectivity of one integrator to some defined Spokes.
So the integrator profile looks like this in the hub
crypto isakmp client configuration group [NAME]
key [PASSWORD]
domain [DOMAIN]
pool [NAME]
acl [NAME_VPN_Split]
[code]....
The problem is that if we can't summarize an ACL in less than 50 lines, we will have to create a second profile and to know wich one to use for wich network...
Version:
ROM: System Bootstrap, Version 12.3(4r)T3, RELEASE SOFTWARE (fc1)
BOOTLDR: 7200 Software (C7200-KBOOT-M), Version 12.3(15), RELEASE SOFTWARE (fc3)
System image file is "disk2:c7200-advsecurityk9-mz.151-4.M2.bin"
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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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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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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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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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Jan 24, 2011
I have 2 routers ( Cisco 3845's) both running identical IOS's. Each router has identical 5 networks on it with one network each being different.I have HSRP set up on the identical 5 networks.Your standard Fail over senario.ON one of the routers one network is not seeing the other router in the same network, Will not Ping or traceroute.And HSRP stopped working ( both were thinking they were active. which of course brought the network to a halt. Non of the interfaces has any ACL on them, They are plugged into a Brand new Cisco 3560v2 switch. I have switches out the cables to eliminate that as an issues.
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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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Feb 6, 2012
I have a 3845 Router with three connected interfaces, one to my WAN, one to my LAN and another to my wifi zone. I want to limit the amount of WAN bandwidth the WIFI zone can take to say a max of one third and not restrict WAN bandwidth from the LAN at all.
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Nov 3, 2012
We have a Cisco 3845 router and on the G0/0 interface we have our public switch with multiple public IP addresses (servers, routers, etc..) and on the S0/0 interface we have a DS3 Internet connection. I need to limit the bandwidth from the Internet (download) to one of the IP addresses on the G0/0 interface. I'm thinking of limiting to 256K and really need info with either a policy map or something equivalent.
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Jun 1, 2011
I am trying to get ride of an old traffic management appliance and would like to replace it by a simple Cisco 3845.
The configuration is really simple:
Customers -- Router 3845 -- Internet
I want to be able to provide bundles to customer such 64kps garanteed/ 2mbps MIR (retail) and 2mbps garanteed no MIR (business).
I need also to specify to the router the total internet bandwitdh available (example: 20mbps symetrical).
This configuration will work ? Should I worry about any performance issue if I start to have a lot of customers ?
ip access-list extended Cust1
permit ip any sub_Cust1
permit ip subCust1 any
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Feb 10, 2012
I have two vlan interfaces, how to limit bandwidth on them ?I need than speed on each will be direrent.
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Sep 18, 2012
on our cisco 3845 router we have recently applied a qos policy on a fast ethernet where our MPLS link is connected. We have already having a GRE tunnel over the fast Ethernet with one of our site. Now we are observe the application working slow over the GRE tunnel. When we have removed the qos policy from the MPLS link the application are working fine.My question is why it is happning on the gre tunnel. So how to overcome the problem. Shall we need to apply the qos policy on the GRE tunnel alos ?
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Dec 7, 2011
I need very Urgent Time based Bandwidth limit on subinterface in Cisco 3845 Router.At Present 3Mb input/output rate-limit of our one of the client now they need between 9:00 to 20:59 3 Mb and between 21:00 to 8:59 they need 9 Mb bandwidth, please see current b/w limit config of our client in my router subinterface.
interface GigabitEthernet0/1.12
description *** xyz ***
encapsulation dot1Q 12
ip address 10.11.12.13 255.255.255.248
rate-limit input 3072000 576000 1152000 conform-action transmit exceed-action drop
rate-limit output 3072000 576000 1152000 conform-action transmit exceed-action drop
Now how can i achive of my requrement to time based b/w limit.
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Aug 26, 2012
We have a Cisco 3845 router for Site 2 Site VPN tunnels to external business partners. The IOS is (C3845-ADVIPSERVICESK9-M), Version 12.4(15)T8.One of our partners is doing a DR test and needs to have us swing the VPN traffic to another peer in a test location temporarily. I plan on adding the test hosts to our existing encryption ACL, but instead of building another crypto map, I was wondering if I can add a secondary peer to the existing one?
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Dec 28, 2011
I have two routers at our core data center, a 3845 and a 3640. These are configured with GLBP. There are 4 remote sites:
Site #1: One T1 link to the 3825
Site #2: One T1 link to the 3825, and One T1 link to the 3640
Site #3: One T1 link to the 3825, and One T1 link to the 3640
Site #4: One fractional T1 link to the 3825, and One T1 link to the 3640.
My question regards site #4. If i understand correctly, GLBP works on the premise of "host" balancing, and not true "load" balancing. The reason I ask is that the large majority of our WAN traffic is from our Exchange server to our remote sites. In the case of site #4, our exchange server is sending traffic on the fractional T1. Is there any way with GLBP to either split this traffic from a particular host across two links in a round-robin fashion, but leave other hosts to travel wherever the router sends them, or, to force at least our exchange server to use the full T1, rather than the fractional?
I've read up on the weighting mechanism, and it appears that tracking an interface has nothing to do with bandwidth use. If I understand correctly, if I were to track the Site #4 PPP to the 3640, and give a weight of 10 to glbp on there, it would really only take affect if the interface is down. It will have nothing to do with host AVF election.For the record, exchange traffic is constant to this site, so there is no chance for the host connection to reset and potentially elect to use the larger pipe. I would like to "tweak" this to make better use of available bandwidth.
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Aug 31, 2011
I want to implement QoS on our Core router but the core router makes use of GRE Tunnels to remote branch locations.so far all QoS techniques i want to use cannot be implemented using tunnel interfaces.
the core router is a cisco 7604 router with IOS version 12.2 (33)SRE while the remote locations have ISRs (2821).
Which QoS technique to use with respect to GRE Tunnels as there are times of congestion due to heavy network traffic to those remote locations.
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Sep 19, 2011
I am trying to implement RBSCP on two 3845s running 15.1(4)M1 Adv Enterprise over a satellite link. The "show" commands all look correct, but whenever I policy route my machine through the RBSCP tunnel I dont even make it to the opposite side. However, if I remove the "tunnel mode RBSCP" command so it acts like a regular GRE tunnel, I route through it just fine. So I know its not a NAT, routing issue. [code]
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Apr 11, 2011
We have just installed our first 2951 router, and were suprised to see in our Netflow collector that Tunnel interfaces appeared even though we did not configure any, I have seen other posts talking about PIM tunnel when using Multicast, but we dont use multicast and the tunnel is GRE questions are, where do these interfaces come from? how do they pick up an IP address? can we shut them down? IOS is 150-1.M4 loopback interface ip address is 172.16.224.238 ( tunnel source) see output from sh int below
Tunnel0 is up, line protocol is up Hardware is Tunnel Interface is unnumbered. Using address of Tunnel1 (172.16.0.1) MTU 17912 bytes, BW 100 Kbit/sec, DLY 50000 usec, reliability 255/255, txload 99/255, rxload 1/255 Encapsulation TUNNEL, loopback not
[Code]......
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Feb 16, 2012
I have two Cisco 3845 routers which receive a multicast stram via a tunnel interface, i.e Tunnel163 (PIM Dense mode is enabled). These routers are both connected to a LAN segment (FastEthernet0/1/0) where receivers are. [code] Router1 is the assert winner (highest IP address), it sees igmp joins request, but it's pruning the interface. It happens sometimes and it lasts until I manually issue clear ip mroute.Unfortunately I cannot migrate to Sparse Mode.
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Oct 1, 2012
I have two Cisco 2941's going over a IPSEC VPN. I need to push the same network over this connection. For example i need 192.168.255.0 / 25 on my side and i need to plug in a laptop on the far end 2941 with the same network. I have built GRE tunnels before and i found a configuration online to brdige interfaces over a GRE tunnel.
when i get to adding the bridging to the configuration which i will show below i get an error. Please see below. Also when i try to add the same briding command on the GRE tunnel which is needed it doesnt show the bridging command as being available. The Cisco 2941's are both using version: mwr 2941-iprank9-mz.124-20.MRb1.bin.As i stated the only end result i need is to be able to configure a path from point A and B and have the same network on each end.
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Mar 23, 2013
I have a task of setting up bandwidth limit on the 2811 router Fastethernet interfaces.The scenario is:We have a 4MB Internet connection and would like to allocate bandwidth usage to users.
Fastethernet 0/0 needs to be set with 256KB output and 2048 input. This is going to be connected to a wireless router. Fastethernet 0/1 needs to be configured with 2048 output.I could also use SDM if that's easier than using CLI.
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Feb 28, 2010
We have point to point metro ether net link terminating on 7204VXR router.On this point to point link we are configuring GRE over ip sec. Problem is when the traffic exceeding 8mbps we started getting packet drops. from the Cisco documentation it seems the tunnel bandwidth is by default 8mbps and there is parameter like Inherit/receive but those actually not change the tunnel interface bandwidth.If we just give tunnel bandwidth with bandwidth mentioned it allows me to give option of 100mbps but again the tunnel interface bandwidth remains 8mbpos only and probably that 100mbps is useful only for routing decisions.
i am using advance security 12.4.15T12 image. Whether this is a limitation or any other way to go beyond 8mbps for the tunnel interface (7204VXR-NPEG1 processor)
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Jul 16, 2012
what is a maximum number of configurable gre tunnel interfaces on CISCO2921-HSEC+/K9 router?
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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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May 13, 2011
I have a Cisco 1941 router with the Security license running IOS c1900-universalk9-mz.SPA.151-4.M.bin. Is there a "tunnel bandwidth" command like with routers that have the Advanced IP Services license? My concern is being able to adjust the bandwidth to a value greater than 8 Mbps...
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May 19, 2011
We have a major poblem going on with our VPN router.We have a 7206vxr router which has an mGRE tunnel forming EIGRP neighbourship with about 800 remote locations using GRE over IPsec.
We have a problem where the EIGRP neighbourship keeps flapping intermittently and this happens to 30-40 locations at one time and very frequently.What I noticed was that the GRE tunnel transmit bandwidth was showing as 8 Mbps. I guess there is an option to change it.Will this 8 Mbps limit cause any issues of EIGRP neighbourship flaps and will increasing the bandwidth useful.
We are also seeing output drops on the tunnel interface.
pcvpnstore#sh int tu0Tunnel0 is up, line protocol is up Hardware is Tunnel Internet address is 10.254.254.254/16 MTU 17912 bytes, BW 30000 Kbit/sec, DLY 50000 usec, reliability 255/255, txload 244/255, rxload 110/255 Encapsulation TUNNEL, loopback not set Keepalive not set Tunnel source x.x.x.x (GigabitEthernet0/2) Tunnel protocol/transport multi-GRE/IP Key 0x328CDF, sequencing disabled Checksumming of packets disabled Tunnel TTL 255 Tunnel transport MTU 1472 bytes Tunnel transmit bandwidth 8000 (kbps) Tunnel receive bandwidth 8000 (kbps) Tunnel protection via IPSec (profile "dmvpn") Last input 00:00:00, output never, output hang never Last clearing of "show interface" counters 00:17:06 Input queue: 0/800/0/0 (size/max/drops/flushes); Total output drops: 732
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