Cisco VPN :: 2821 Tunnel To Snapgear SG560
Oct 24, 2011
So i am trying to test out a vpn config to establish an IPSEC tunnel between our 2821 and a snapgear product. I have the tunnel built, it comes up but I am not able to pass traffic between the two networks. The 2821 end is 10.30.254.x and the snapgear end is 10.30.200.x I thought it was an issue with the acl, but that looks like it is allowing communication between the two subnets. I know I am missing something simple, but I can not for the life of me find it.
urrent configuration : 7866 bytes
!
! Last configuration change at 17:49:21 Chicago Mon Oct 24 2011 by admin
version 15.1
service timestamps debug datetime msec
[Code]....
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Jan 23, 2012
i have 2 routers, 2821 and 2811. they are connected via GRE over IPsec, and all of the traffic from 2821 is being routed to 2811 with a default route to its tunnel interface. 2821 needs to access internet through 2811 valid ip address, my question is that how should i nat the traffic on 2811 so that 2821 can access the internet?
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Nov 7, 2010
We have around 20 VPN tunnel via Cisco Router 2821 (Intranet) and around 30 VPN tunnel via Cisco ASA (Internet) with 3rd Parties/Vendors.I wanna know if there is any monitoring tools from Cisco or any others providers who can give me information/trend report about VPN tunnel Up/Down time, Volumns of Traffic, Protocols etc.
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Jun 9, 2011
we have a DMVPN Phase 2 setup in a hub and spoke design using a single head end device (Cisco 2821) and 30 spokes the majority of which are 1801's, all spokes have the same configuration and underlying transport (DSL). DSL circuits are terminated directly on the ISR.
We have a strange issue where by one of the spokes drops the tunnel every 4 or 6 minutes almost down to the second as per the output from "crypto logging session" This seems to vary between both time frames.
EEYSRO01# sh logg | include CRYPTO-5-SESSION_STATUS
Jun 10 12:48:36.624: %CRYPTO-5-SESSION_STATUS: Crypto tunnel is DOWN. Peer 213.**.**.**:500 Id: 213.**.**.**
Jun 10 12:49:06.697: %CRYPTO-5-SESSION_STATUS: Crypto tunnel is UP . Peer 213.**.**.**:500 Id: 213.**.**.**
Jun 10 12:52:36.718: %CRYPTO-5-SESSION_STATUS: Crypto tunnel is DOWN. Peer 213.**.**.**:500 Id: 213.**.**.**
Jun 10 12:52:37.030: %CRYPTO-5-SESSION_STATUS: Crypto tunnel is UP . Peer 213.**.**.**:500 Id: 213.**.**.**
[code]....
We also have other errors that proceed to the tunnel Up/Down events
Jun 10 14:35:15.716: IPSEC(crypto_map_check_encrypt_core): mtree says we have SA but couldn't find current outbound SA. dropping pak. pak->cryptoflags=0x2000820
Jun 10 14:35:15.716: IPSEC(crypto_map_check_encrypt_core): mtree says we have SA but couldn't find current outbound SA. dropping pak. pak->cryptoflags=0x1000820
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Apr 18, 2013
We are setting up an old office building as an offsite data center. The network cosists on a PIX 501 firewall and a 2811 router. I am attempting to setup a GRE tunnel over IPsec back to the main office. The main office consists of a PIX515, a 2821 router, and a 2921 router.
There is also an ASA5510 in our main office that is used as our primary connection for all of our external services and as a GRE endpoint for our other offices. The PIX515 is used to connect our main office clients to the internet and we would like traffic between it and our offsite data center to go across it as well. The default route is to use the ASA. We used policy based routing on the 2821 and 2921 routers to direct the appropriate traffic to the PIX515. Right now I am not able to get the tunnel setup. It appears that the offsite datacenter is sending packets but is not receiving any when I issue the “show crypto ipsec sa” commands on both firewalls. I will show the output of that command below.
Main Office The external address 198.40.227.50. The loopback address 10.254.10.6 The tunnel address 10.2.60.1
Offsite Datacenter The external address 198.40.254.178 The loopback address 10.254.60.6 The tunnel address 10.2.60.2
The main office PIX515 Config :
PIX Version 7.2(2)
!
interface Ethernet0
mac-address 5475.d0ba.5012
nameif outside
security-level 0
ip address 198.40.227.50 255.255.255.240
[code]....
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Mar 14, 2013
i've configured Cisco VPN CLient on a router 2821, and it is working fine.I could access inside resourses normally>the problem is that when i connect with VPN i lost connectivity to internet? What is wrong with my configuration? Below the running config of the router.
CISCO2821#sh run
Building configuration...
Current configuration : 5834 bytes
!
version 12.4
[Code].....
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Jan 9, 2011
i have a 7201 router with NPE-G2. i have a design which i have the option to send all the traffic through a GRE tunnel or a L2TPV3 tunnel.which method is more CPU consumption ?
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Sep 23, 2012
I'm in process of purchasing a new Cisco routers for our branches that will be used primary to enable IPSec virtual tunnel interfce with "tunnel mode ipsec ipv4". does the default IOS IP Base supports this feature? or i need to purchase DATA license or SECURITY license?
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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
[Code].....
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Jul 24, 2012
Environment :linksys wrt300n v1.1 which can have ddwrt-mega. Willing to tunnel all lan's outbound traffic through an ssh tunnel.
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Jan 23, 2012
There are a few situations were I'd like to be able to use the locally configured account on a device but still have ACS in place.I want to complete this WITHOUT adding the locally configured account into ACS.I have tried setting the advanced option under Identity for if an account is not found to "Continue" however this causes the account to be allowed as long as a password is typed (any password, as long as its not blank).
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Dec 6, 2011
I have router cisco 2821 wit IOS version 12.4(25d) I also have Cisco AIM-VPN/SSL-2 Encryption Module for this router.I inserted this module in AIM slot 0 but can not see it. [code] What should I have to change to enable this module?
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Mar 27, 2013
I have an existing C2821 router (2 onboard GE + 1 HWIC-2FE) currently. Like to add another 1 HWIC-2FE. Saw this doc on Cisco website which states Max of 2 HWIC-2FE for Cisco2821. Want to confirm this is indeed so as another link states max of 1 HWIC-2FE.
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Jan 19, 2013
I have configured Clientless SSL VPN on 2821 router with IOS12.4//Its running fine and I am able to open local portals I have mentioned in the SSL URL List.
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Aug 11, 2012
I have a cisco 2821 router and it has an advanceip image in the flash each time on reboot it gives the message software forced crash and checksum error and finally goes into rommon. i tried xmodem and tftpdnld -r but same problem persists. I even changed the CF with a working router's flash but the same problem occurs.I also loaded an ip base image of about 13Mb size and all the same problem repeats with it.
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Aug 16, 2012
want to view the Log on the Cisco 2821 router for any issue occur.
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Apr 6, 2011
I'm trying to install ios into my cisco 2821 which boots in rommon. Apparently the ios is corrupted, I have set the IP_ADDRESS, IP_SUBNET_MASK,DEFAULT_ GATEWAY, TFTP_SERVER, TFTP_FILE but anytime I issue the 'tftpdnld' and confirm to continue, the process will time out give this error message" ARP: address resolution for 10.203.8.49 timed out.ARP failed with failure code 1. TFTP transfer aborted.
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Feb 17, 2012
I get from my ISP 50 Mbps upload/download link via BGP. I tried to test today the speed by downloading around 10 torrents simultaneously and I use PRTG Network Monitoring to view port traffic speed. According to PRTG Reports the maximum rate of speed I get is 20 Mbps. I use Cisco 2821 ISR on my side.
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Mar 16, 2011
I have multiple VPN endpoints setup on our Cisco 2821, an SSL VPN, a site-to-site VPN, and a Web VPN for windows users. For whatever reason, the web vpn service periodically fails. The only way I've been able to bring it back up is to reload the router. Is it possible to restart the service itself?
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Nov 25, 2012
I have a DMVPN network with 2 hubs (2821's). This setup is used for VoIP applications over the Internet for teleworkers. At the main hub site I used to have only 1 Internet feed which was DSL with a static IP. Now I have 2 WAN feeds for this site - 1 FTTB w/ PPPoE & the DSL with static IP. Since this site also hosts a PRI, I want all voice communications to go through the FTTB link instead of the DSL for obvious reasons, but keep the DSL as DMVPN Hub for all NHRP lookups as this link has a static IP address & is very stable. We originally put the PRI router as a DMVPN spoke which connected through the FTTB link, with another router acting as the DMVPN hub on the DSL link. This was obviously a waste of machinery. I want to combine both routers into one. So I tried something like this (don't laugh):
Gi0/0 to FTTB (Dialer1 connects to Internet)
Gi0/1 to DSL (Public IP towards 877 demarc)
Tun0 attaches to Dialer1 public IP and connects to other spokes, no VRF
Tun1 attaches to Gi0/1 public IP and acts as DMVPN hub (ip nhrp map multicast dynamic) under VRF "Hub"
EIGRP AS 1 is set up twice, once under router eigrp 1, and the other using router eigrp 2 using an address-family under the Hub VRF.This kinda works but obviously Tun0 & Tun1 do not speak to each other. I also had to remove the ip nhrp map instruction that pointed to Hub1 on Tun0, as this was causing a weird condition in the router where it was repeatedly trying to connect a tunnel to itself, and crash the router because the NHRP process would go haywire. So my users must rely on the Hub2 to get a NHRP lookup for the PRI site. If Hub2 goes down, everything works in the network except for tunnel connections to the FTTB link. I'd rather not have to configure 2 tunnels on each spoke router unless I really have to.
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Nov 30, 2012
URL What changes are needed to the 2821 config that is behind another Cisco router? And what static ports should be opened on the MAIN Cisco router that is in front of the 2821?
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Nov 8, 2011
I am looking for information on how to properly configure rate limits on a Cisco 2821 so that I can set different Service levels by IP address. For example I want to limit a block of IPs to 1 Mbps Down and 512 kbps Up. I am doing point to point networks from our router (ISR 2821) to another router that is assigned a static IP. The other router connects to our router through a Fast Ethernet port on a NM 16 port switch card. The routing end point for the network is on a VLAN interface. Currently we are using bonded T1's but are about to turn up a Metro-E circuit.
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Sep 25, 2012
how many NM modules can be inserted into cisco 2821?
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Sep 12, 2011
I have 1 2821 router with several IP addresses from a single provider. The IP addresses are not contiguous.I would like to NAT different internal subnets to different external IP's. i.e. map 10.1.1.0 to x.x.220.68 and 10.1.2.0 to x.x.220.70 and 10.1.3.0 to x.x.105.184.
I currently have ip nat inside source route-map SDM_RMAP_1 interface GigabitEthernet0/1 overload that translates everything to x.x.105.184.What would be the best way to setup the NAT statements to be able to divide up the subnets?
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Dec 19, 2010
I will be getting a WAN connection to a few offices and I have a need to control routes recieved and advertised to/from them. The service provider will be placing a CPE device on-site and will support OSPF with my edge router; in this case a Cisco 2821. That 2821 router will ideally be configured with OSPF routing toward my two core switches.
-> C2821 to NOT have the full routing table from the Core switches
-> Only needs knowledge of two routes from the Core switches and routes from remote offices.
-> Controlled routing advertisements. I do not control the remote offices and would like to ensure they do not accidentally advertise routes into my enviroment that could create a conflict.
I'm assuming the Service Provider will be running BGP on their CPE router, which will mean that the OSPF routes recieved by my Cisco 2821 edge router will be OSPF E2 routes. So if thats the case the 2821 would need to advertise E2 routes.I'm not sure if I should be configuring the 2821 in Area 0...because its meant to be a WAN edge router; but if I configure it in another area...say 200...the Service Provider may configure his CPE router in Area 0...which I'm guessing would pose a problem as the 2821 would be lodged in between two area 0s?
From the reading I've done it sounds like I could use NSSA...but I'm not sure if this is the best design.
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Apr 17, 2013
Our router 2821 reboots each time vpn traffic is called : - vpn connects without problem - as soon as you launch rdp, ftp or anything else traffic => the router reboots itself Consequence : no more phone, no more internet during the reboot process. A call can be cut when it happens.
Below is the show context log :
CUCME#show context
System was restarted by error - a System Error, PC 0x4046A374 at 10:18:43 CEST Mon Apr 15 2013
[Code].....
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Apr 7, 2011
We are using a 2821 Router as our boundary router. It has installed into it a 9 port HWIC for layer 2 switching as well as allowing the router to communicate on the Network Management VLAN. All of the devices on the Network Management VLAN are segregated from the managed traffic, which unfortunately also doesn't allow them external NTP services. Can the router be programmed as a NTP server so that all of the network appliances can utilize it for NTP from either it's NM Vlan IP address or from a loopback address?
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Nov 6, 2012
I have one 2821 router. Which ios will support both voice and vpn?
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Jul 19, 2011
Where can I find information regarding the details and upgrade path for the 2821 Intergrated services router. We are looking to upgrade from 12.4 (c2800nmc-spservicesk9-mz.12.4xxx.bin) to 15.1. Is their a spefici location to look for in the download or IOS area for upgrade paths?
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Mar 16, 2012
On a cisco 2821 running 15.1(3)T1 From this cisco DOC, common use of secondary IP addresses on an interface are
•There might not be enough host addresses for a particular network segment. For example, suppose your subnetting allows up to 254 hosts per logical subnet, but on one physical subnet you must have 300 host addresses. Using secondary IP addresses on the routers or access servers allows you to have two logical subnets using one physical subnet.
•Many older networks were built using Level 2 bridges, and were not subnetted. The judicious use of secondary addresses can aid in the transition to a subnetted, router-based network. Routers on an older, bridged segment can easily be made aware that many subnets are on that segment.
•Two subnets of a single network might otherwise be separated by another network. You can create a single network from subnets that are physically separated by another network by using a secondary address. In these instances, the first network is extended, or layered on top of the second network. Note that a subnet cannot appear on more than one active interface of the router at a time.
On the WAN interface I've added two Secondary Public IP's (from the same subnet) to use for NAT to internal hosts. Is this a common scenario or is there a more typical way to acheive this. This assumes, I do not want to put a Public IP on an interface on the internal server.
interface GigabitEthernet0/1
description WAN$ETH-WAN$
ip address x.x.x.1 255.255.255.240
ip address x.x.x.2 255.255.255.240 secondary
ip address x.x.x.3 255.255.255.240 secondary
[code]....
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Apr 19, 2010
I have a 2821 router with two T1 WICs and have the need to route FTP down one T1 and all other TCP traffic down another T1. All traffic is going to the same remote IP address. The remote sites are in different states, and I assume that the remote subnet is being bridged between the states. It's kind of a weird set up, but it's not my design.
Anyway, can I use a route map to split off FTP traffic to host A and send it down one T1 and have the rest of the IP traffic to host A go down the other T1? I also need to be able to have all traffic use one T1 in case the other T1 goes down.
My first thought was to static all IP down T1-1, then route map FTP traffic down T1-2, then have a floating static for all IP traffic down T1-2 with a higher metric. But something would have to track the T1 interfaces and I'm not sure if route maps or static routes can do that. Any thoughts on this?
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Aug 28, 2012
Teh following output is generated by sh context
System was restarted by bus error at PC 0x41FE4988, address 0x813B at 10:07:23 EEST Wed Aug 29 2012
2800 Software (C2800NM-ADVIPSERVICESK9-M), Version 12.4(20)T1, RELEASE SOFTWARE (fc3)
Technical Support: [URL]
Compiled Wed 24-Sep-08 14:37 by prod_rel_team
[Code]....
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Mar 12, 2013
I have two routers 2921 and 2821. Also 2 WAN Links from two Different ISP's. Presently I am using Static Routing with PBR for traffic shaping.
Now I want to use BGP Routing in my network. What is the requirement for using BGP. Does ASN need to buy or the ISP will provide ?
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