Cisco WAN :: 2901 - Configure Router Overload NAT (IOS 15)
Jul 5, 2011
I am attempting to configure a Cisco 2901 router using IOS 15 to properly perform NAT/PAT translation between LAN and the internet connection. I've configured DHCP pool for the local interface (GigabitEthernet0/1), which works properly. The WAN interface (GigabitEthernet0/0) is configured to obtain its own IP by DHCP from the ISP. I can work on the LAN computers and I can access the internet directly from the router (using, for example, telnet and router's ping commands). The problem is, NAT does not work properly and connection from the LAN interface does not reach the WAN interface.
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Oct 2, 2011
I have a 2901K ISR router IOS Version 15.0(1r)M12 and I will be using this as a internet router, The WAN interface will get dynamic IP from the ISP, so I need to configure PPOE. I am referring the following link for setting up PPOE. [URL] However I am unable to define PPOE protocol as shown below
INTERNETRTR(config)#!!!!! Configure Router as PPPoE Client to the ISP
INTERNETRTR(config)#vpdn enable
INTERNETRTR(config)#vpdn-group 1
INTERNETRTR(config-vpdn)#request-dialin
INTERNETRTR(config-vpdn-req-in)#protocol ?
l2tp Use L2TP
INTERNETRTR(config-vpdn-req-in)#
Any link for setting up PPOE on 2901 series router.
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Feb 1, 2011
i have trouble to get the serial card (2nd genteration T1 card) on up/up state on a 2901 router. the SP guy who installed the rj48 at the demarc says it was tested good. For some reason, it is on up/down state no matter what i tried.
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Mar 10, 2012
I am attempting to configure a Cisco 2901 router using IOS 15 to properly perform NAT/PAT translation between LAN and the internet connection.
My Configuration:
interface GigabitEthernet0/0
ip address dhcp
ip nat outside
ip virtual-reassembly
no ip route-cache
duplex auto
speed auto
no cdp enable
no mop enabled(code)
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Jan 10, 2012
I use a C892 router with the IOS c890-universalk9-mz.152-1.T.bin. I just ran the command "debug ip packet 151 detail" and then the router stopped to work because it was overloaded. The ACL151 I used is as follow:
Extended IP access list 151
10 permit ip host 10.1.1.1 host 91.1.1.1
In the syslog then I got hundred of messages from IPSec:
Jan 11 09:43:35.677: IP: s=10.80.10.254, d=10.64.19.99, pak 8A7453CC consumed in output feature , packet consumed, IPSec: to crypto engine(70), rtype 1, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
[code]....
For me it seems just like that this ACL is not applied and that I have a debug then for the whole traffic.
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Feb 18, 2013
My collegue and I have been trying to figure out why we are unable to get this ASA to NAT Overload correctly. I'm sure it is something stupid, and the config may have gotten a little dirty as we tried to change options and make it work. FYI, we can ssh from the WAN into the device to configure it. It is communicating externally, but it isn't natting.
ASA Version 8.6(1)2
!
hostname ASA5512-X-Remote
enable password ********** encrypted
passwd ********** encrypted
names(code)
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May 19, 2011
There is a new office which is going to be on a separate internal subnet (192.168.254.x), and need this to be port address translated to one public address (212.23.51.108). Ive given it a go on the ASA5510, but not sure if Im doing this right.
3 of the internal addresses need port redirection:
192.168.254.10 - public port 33510 - private port 3389
192.168.254.11 - public port 9940 - private port 443
192.168.254.173 - public port 3390 - private port 3389
port 80 and 443 opened for 192.168.254.10
I have a test pc setup and connected to the internal 192.168.254.0 network (gave it static of 192.168.254.10), it is reaching the internet, and its public IP is seen as 212.23.51.108, however how do I test to see if port 80 or 443 is open for this ip?
Tried using the cli but gave up and looked at doing int in ASDM, however cant see the option in ASDM for NAT overload, so ive tried configuring this with Dynamic NAT which looks about right.....
This is the relevant config so far as far as I can see.
global (outside) 2 212.23.51.108
nat (inside) 2 192.168.254.0 255.255.255.0
nat (inside) 2 access-list inside_nat_outbound
[code]....
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Aug 30, 2012
I have 3 routers all running OSPF. each of the three routers have 2 networks they are advertising..NAT Overload breaks OSPF Adjacency
[code]...
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May 18, 2011
I have the folowing nat configuration on my catalyst 6509-E with a sup720-10G that does not work, and gives a erros messague:
ip vrf testes
rd 6900:5
interface Vlan1111
description liga
ip vrf forwarding testes
ip address 192.168.63.91 255.255.255.248
ip nat inside
[code]....
This configuration generates the folowing error:
NAT: translation failed (A), dropping packet s=128.2.21.21 d=192.168.63.185
If i change the nat overload to a static nat, everything? Is there any wrong with this configuration ?
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Apr 26, 2011
Broken Pat/Overload after upgrade from 1711 to 891
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May 6, 2013
We have an ASA 5505 and we keep getting short bursts of ICMP packets (5000 in one second) They will do this and it just simply overloads the ASA and it crashes.Is this since it is 1000 past the 4000 connections per second capacity of the ASA 5505 or do we have a setting wrong some place that could prevent this type of overload from happening? We are looking to prevent DoS and other attacks that prevent even a short loss of connection since the servers are getting attacked daily and we have voice streaming on through the ASA. [code]
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May 1, 2013
I have a cisco 2821 router. I currently have it setup to accept vpn connections from a cisco client which uses the 172.16.4.0 subjet for vpn connections. I also have nat overload setup for my local lan of the router so my internal servers on the 172.16.3.0 subnet can reach the internet. Every thing works great for that setup.However I have tried several methods I found for split tunneling and they have weird problems with the nat overload in place. If I take away nat overload the split tunneling works. If I take away split tunneling the nat overload works. I can't seem to get them to work at the same time.Config is below. This is the vpn/nat overload config with no split tunnel.
Current configuration : 2236 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
[code]....
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Mar 17, 2011
I have one router 1841 in which i configured PBR for internet traffic from LAN. I hv two ISPs few server are configured for ISP1 and few for ISP2.I planned to shift my existing setup at 2901 G2 router. when I am configuring the same config on this router so traffic is passing through only from one ISP not from other, if I troubleshoot so I see that the interface which is connected with ISP2 is not getting any input/output packet.
Config is here:
==========
interface FastEthernet0/0
description ****** ISP2 ******
ip address 203.xx.xx.110 255.255.255.248
[Code].......
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Apr 18, 2011
I have a 2901 ISR G2 router, with IOS 15.0.1M3 , this router is not working with static NATing, I have tried to configure this router with one internet link and make few static translations with it. But this configuration is perfectly working with 1841 ISR router.
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Feb 28, 2013
I'm trying to run the ISM-VPN-29 in a 2901 router. Cisco says that the SECK9 and HSECK9 licenses are needed to operate this ISM. However, they also say that the HSECK9 license is not available on the 2901. I'm running the SECK9 license but it's still not working.
This link, table 5 states that the HSECK9 feature license is for 2921 and 2951 only:[URL]This link states that it is a requirement to run the card, and also that the card works on the 2901:[URL]
I am running 15.3(1)T IOS.
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Dec 24, 2012
how to install VIC3-2E/M in cisco router 2901 & what precaution should have to be taken.
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Jul 1, 2012
I have a 2901 router and I would like to enable the following feature router mobile. [code] I used c2800nm-advipservicesk9-mz.151-3.T1.bin on a 2811 and this worked without any problem.Is there a possibility that there is some kind of license associated with this feature on a 2901?
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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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Feb 18, 2013
I have a client who would like to create a two VPN tunnels from one cisco 2901 router. One to the HQ and one to the DR. Is this possible?
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Jan 13, 2013
I have just received a new cisco 2901 and started on its configuration. when I started configuring VPN tunnels, I saw that non of the crypto commands are available.
The router runs on iOS 15.1.From what I read, people refer that the router needs to past a license activation or something like that. When I run show verison - i do see "none" under most of the categories.
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Jan 10, 2012
i need to know how many links i can using with load-balance on the same router ? i have router cisco 2901 , 3 providers , every provider having 4 links can i load balance between 12 links ? i am using static route
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May 22, 2011
why router going to shut down mode after 15 or 30 min? Here is the #show tech support command. find the attached document.
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Dec 22, 2010
I have configured PBR on my 1800 series router, it is working perfect. Now I am changing my router from 1800 to 2901 router with the same config, so the PBR stop working and I am not getting hits in the second WAN interface. [code]
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Sep 19, 2012
I am trying to configure a 2901 router to act as NTP server on my network.This set "ntp master" in the router.I have no possibility to access an NTP server on the Internet.Now I want to configure a Windows 2003 DC to update the time from the NTP Server (router 2901).In Windows 2003, the registry value "Ntp Server" may have to be IP addresses or FQDN? (In my case I put router_ip_address, 0x1) 0x1 = use this "SpecialPollInterval" to update the time? Where you can find that these actions mean "next action is 3"? In Event Log in Windows 2003 DC receipt Event ID 35:The time service is now synchronizing the system time with the time source ROUTER2901_IP (ntp.m | 0x1 | W2K3_SERVER_IP: 123 -> ROUTER2901_IP: 123).Configure "Special Poll Interval" in 10 seconds.But the time on the Windows Server 2003 DC continuous five minutes ahead of time compared to the 2901 router.
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Feb 18, 2013
I need to break into a 2901 router to recover the passwords. Cisco's methodology for password recovery on 2900 seriews routerssays to remove the compact flash card and reboot into RMON. There is no external compact flash card on a 2901. Is there acompact flash card inside the box? Or can you use the older method of rebooting and then hitting ctl+break to boot into RMON?
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Jul 6, 2011
I've been looking to see if its possible to create a GRE tunnel between a Cisco 2901 with 3 adsl WIC cards and a Cisco ASA.The Cisco 2901 is at our remote office and we have 3 adsl lines for resillience as they tend to go down alot.The Cisco ASA is at our Head Office sitting behind our ISP's managed router.
The desired end result would be to have three GRE tunnels, 1 for each DSL line terminating on the ASA at head office and use EIGRP routing protocol to move traffic across to another tunnel should one fail, and encapsulate all of that with IPSEC.
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Jan 16, 2013
Router : cisco 2901 with securityk9 licence
I used this manual : [URL]
Im trying to change de login page but the command doesn't work : ip admission proxy http login page file disk1:login.htmThis is what I see when I type (config)#ip admission ?
absolute-timer Absolute Timeout in minutes
auth-proxy-audit Authentication Proxy Auditing
auth-proxy-banner Authentication Proxy Banner
[Code].....
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May 2, 2012
i'm interested if it's possible to set the NTP server via DHCP on an 2901 Router with 15.2(2) image.
i configured the interface gigabit 0/0 as dhcp client. The DHCP Server sends to me DNS, Default GW and NTP. All is working fine, but the NTP will not be configured. i tried to add an DHCP option request, but there is no NTP (42) value. [code]
is there any way to add the value NTP (42) for the DHCP request or isnt it possible?
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Dec 5, 2011
i want to use the cisco 2901 router with two adsl cards(EHWIC-VA-DSL-B) and would like to know if that possible without any restrictions with the ip base license.
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Jan 19, 2012
I want to configure a bsc network with a cisco 2901 router, but bstun commands are not enabled. I've already found a lot of tutorial about "How to configure bstun network" but none about how to enable it.
"show bstun", "show bsc", "bstun peer-name", etc. return "% Invalid input detected at '^' marker."
Here my "show version" :
Router#show version
Cisco IOS Software, C2900 Software (C2900-UNIVERSALK9-M), Version 15.1(4)M2, RE)
Technical Support: [URL]
Copyright (c) 1986-2011 by Cisco Systems, Inc.
[Code].....
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Jul 25, 2012
I have a repating 2901 router failure when people attempt to download Apple Mac OS X Moutnain Lion upgrade from App Store.
The 2901 just hangs following getting a series of ZBFW packet drop failures:
001928: Jul 26 22:37:18.783 UTC: %APPFW-4-HTTP_PROTOCOL_VIOLATION: HTTP protocol violation (0) detected - session 192.168.223.109:49310 184.25.254.67:80 on zone-pair ZP-PRIVATE-OUT class ccp-protocol-http appl-class ccp-http-blockparam
[Code].....
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May 30, 2013
I would like to know both Cisco 2901 or 2921 router and Cisco 5505 ASA can build site to site VPN.
1) what is the different to build site to site VPN between router and firewall ?
2) which is the best choice if using in site to site VPN connection ?
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Jan 20, 2013
Everything in my network works as a charm. Every host in my vlans can access and ping the internet with no problems. But, my main router does not ping the internet (Pinging either ip "173.194.71.104" or domain "www.google.com" do not work). I don't know how is that possible since my hosts can ping the internet. Below is my main router confiurations
!
hostname Internet_Router
!
boot-start-marker
[Code].....
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