Cisco WAN :: 2821 - Split Outbound Data Traffic
Feb 29, 2012
I have hooked up to the Cisco 2821 router a T1 on Serial and Cable Modem to GigEth0/1 and I want to split outbound traffic so that all regular users will use G0/1 interface for web traffic and the rest of the traffic stays with the T1. I am having an issue where the users on the network are not able to use the internet when using the following config:
!
interface GigabitEthernet0/0.10
description Data
encapsulation dot1Q 50
[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 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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Nov 7, 2012
Is it possible to split data flows on a single T1. Say 1 Flow on time-slots 5-6 and another data flow on time-slots 10-14. If one was data and the other voice would this work?
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May 24, 2011
How do i terminate a split cat5 for data and voice at the patch panel end?
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Dec 11, 2010
We have cisoc 2821 at one of branch and created five sub inetrfaces for different vlans.Output of Show interface shows very frequent increase in the input error count.I have changed the physical cable and switch port on the other side.But still error rate is increasing.When the traffic is less error rate is low but with high traffic it is increasing drastically.My router process is very less(4%) only.What could be possible reason. [code]
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Dec 6, 2012
I have two ISP, I want to divide Inbound to ISP1 and Outbound to ISP2.
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Feb 28, 2011
We're running 8.3(2) in the ASA5540. Users all over our enterprise connect to a business partner's application through the ASA/VPN. We have a class-b address space, and since the users are spread out all over the place, I have the entire class-b space as the local object in the ACL that allows traffic through the VPN tunnel.
The business partner has concerns that our entire address space is available to access the VPN tunnel. So I thought, to alleviate their concerns, to PAT all of our connections outbound to a single IP address.
How is this done in 8.3(2)? We use ASDM to configure the 5540. For example, say our class-b is 159.12.0.0 and the PAT'd IP address will be 199.30.36.6.
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Jun 11, 2013
I have a Cisco 2911 Router and I need to split the traffic from my Lan (Gi0 / 0) by ISP1 (fa0 / 0) and that of my servers (Gi/0/0) by ISP2 (fa0 / 1). [code]My problem comes when wanting to communicate with my remote networks that reach the int Gi 0/1, because when my network to match the policy- route internet sends me all the way.
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Oct 14, 2012
I have a LAN with several linux boxes (Fedora 17, both 32 and 64 bits), as well a a WInXP box. All of these are connected to the same switch, which is connected to the inside port of my PIX 515.
For a few sites (mozilla.org happens to be one of them), for http access, the tcp connection is established, but the "GET" request - or anything else for that matter - will not go through the PIX (from inside to wan). I have verified this by first, using wireshark to watch the packets being sent out from the client box, then by using the trace function in the PIX to see that the packets ARE arriving at the inside interface, but ARE NOT sent out of the wan interface.
This is for the linux boxes ONLY. When I do the same thing with my WinXP box, all works: in the PIX trace, I see the packets arrive at the inside interface, and leave the wan interace. And access to these sites are okay.
(What's a bit weird, although somewhat expected, when I connect my android phone to my LAN via WiFi, it too is unable to reach those sites - but then again, android is linux, right?)
In addition to the tracing, I have narrowed this problem down by connecting a linux box directly to my DSL router, then replacing the PIX with a simple router/gateway. Both of those solutions work.
Some background:
I have been using this PIX for about 10 years now, with the same configuration (except IP addresses). Only in the last several months has this problem started to show up.
I got this pix from a dead company at a really great price (free), so I'd like to keep it, and not have to spend money on something else. I don't have any support license, and have not been able to get any software upgrades. Here is its version info:
taz(config)# sho ver
Cisco PIX Firewall Version 6.2(2)
Cisco PIX Device Manager Version 2.0(2)
Compiled on Fri 07-Jun-02 17:49 by (code)
Serial Number: 405200362 (0x1826ddea)
Running Activation Key: 0x38ac31f3 0x0630df47 0x9a77b805 0x8bc39a60
PS: Since this PIX is at its end of life, I was wondering if any of the software upgrades would be now available without a license?
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Apr 4, 2013
We've got a proyect that requires a few thin clients to connect to a remote PCoIP server.
Looking to the documentation, the only port required to be open through Firewalls is TCP/UDP 4172, however, we've seen (making interface captures) that it somehow also uses ESP (IP protocol 50).
We've got a static NAT translation translating those thin clients to a public IP address, we've created ACLs to allow inbound (shouldn't be necessary as our user is connecting to a remote server) and outbound traffic for TCP/UDP 4172 and ESP and I cannot make it work.
I've also enabled IPSec pass-through Inspection to no avail.
how should we configure our ASA to enable this kind of traffic?
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Mar 10, 2011
I've had a Cisco ASA 5505 firewall connected to a cable modem (Virgin Media, UK) for the past 3 years. In the last 6 months or so I have noticed that the ASA would drop the outside (internet) connection intermittently, usually at least once every 1-2 weeks - the interface still shows as being up but no traffic crosses it, and computers on the inside network abruptly lose internet connectivity. Rebooting the ASA or administratively shutting down the interface and bringing it back up again would cure the problem straight away until the next time it happens.
In the last couple of days however despite nothing having been changed in the configuration the frequency of this connection drop has increased to the point where I would lose access to the internet within an hour of rebooting the ASA. It does not seem to matter whether or not there is traffic currently going out or not, inside computers just appear to suddenly lose internet connectivity.
I have tried the following without success:
1) I completely wiped the configuration (configure factory-default)
2) I changed the port the cable modem was connected to (eth0/0 -> eth0/7, changing switchport vlan accordingly)
I thought perhaps 2) had fixed it but it lasted a whole 2 hours before I woke up this morning to find that none of the internal equipment had internet access despite the fact eth0/7 was showing as up/up in ASA CLI.
This morning I manually set the eth0/7 port to "speed 10" (10Mbps, full duplex). It was previously set to be auto-negotiation (default) on both speed and duplex. As of this post it has managed to keep the outside connection up for 3 hours - but I'm not optimistic that it is fixed.
Interface counters have never shown any collisions, errors, etc - only packets input and output as expected.
Since the problem persisted across ports (eth0/0 -> eth0/7) I'm wondering whether or not the problem could either be faulty memory, or some kind of speed/duplex incompatibility between the cable modem and ASA.
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Apr 14, 2013
Cisco 2811 runs ITP IOS. On that router we run the SMPP service. A client on the network connects to this service, and we need to capture the traffic for debug.
I've tried traffic-export, but I cannot see any outbound traffic. Is there any way to capture the outbound traffic?
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Aug 21, 2011
A recently added outbound rule has left my SMTP communications broken. I have since removed the rule, and had Cisco do some damage control, but it's still dropping some of the SMTP traffic. I get a number of NDR messages each day like the one below:Your message did not reach some or all of the intended recipients. Subject: RE: Christopher, Curt Sent: 8/19/2011 9:38 AM The following recipient(s) could not be reached:
[URL]
on 8/21/2011 9:49 AM
Could not deliver the message in the time limit specified. Please retry or contact your administrator.
<630.SM.Local #4.4.7>
Your message did not reach some or all of the intended recipients. Subject: RE: Christopher Curd Sent: 8/19/2011 9:38 AM The following recipient(s) could not be reached: JWillar@email.com on 8/21/2011 9:49 AM Could not deliver the message in the time limit specified. Please retry or contact your administrator. <630.SM.Local #4.4.7>
I've attached an image of my configuration (ASDM GUI). The part of the image highlighted in green are the SMTP rules. The part highlighted in yellow is another rule that I added about a month ago to block a SYN attack. This rule may be part of the problem because of the order it is in the list. Not sure, though.
I have had two Cisco techs Putty into my ASA to check things out. I think they've done all they can. I wonder at this point if it be wise to just reload the last good running-config I have prior to the Outbound rule being added.
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Nov 26, 2012
I am attempting to block outbound traffic for a specific PC on my LAN using the ASDM.
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Aug 25, 2011
What we are trying to accomplish here use two ISP's (one cable and one T1), use the Cable line for site-to-site VPN and use T1 line for all internet traffic. We currently use the following configuration: Cisco 2820 routers terminating the T1 -> HP switch -> Cisco AS 5510 port 0 -> port 1 to LAN switch (Nortel 5510)We want to force all VPN traffic (using 10.0.0.0/24 subnets - 10.0.1.0, 10.0.2.0, etc) through a cable connection, perhaps on port 2 of the ASA, then all non VPN traffic goes to the T1.
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Jul 31, 2012
I have an ASA 5505 current f/w & the security plus license (to get the 3 nameif interfaces). Can I split traffic between two ISPs, (VPN traffic to one destination on a T-1 on one VLAN, and all other traffic using DSL to another VLAN) and using a different nat policy on both? I know load balacing isn't supported, only failover. I was just wondering if there was a way to make this work.
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Mar 26, 2013
We have some ASR WAN routers which have a dedicated 400M interface to a remote site.
Servers on our Local network source the data through some firewalls via 10G interfaces, which connects to 4500X WAN switches then to the Routers on 1G links.
The sources are rate limiting the traffic but the routers are periodically dropping packets which I think is mostly due to burstiness in the traffic between as it traverses through from 10G links to 1G then to 400M.
How to setup traffic shaping on the 4500X outbound port to our WAN routers.I'd like to see if we could buffer and smoothe out the traffic as it exits the 4500X WAN switch 1G port to the WAN Routers.
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Jul 1, 2011
I need to know how to setup my ASA with dual wan links. 1 is 10/10 fiber, other will be a 50/5 Cable Wideband link. The 10/10 fiber is currnetly being used for VPN's and Internet, (about 20 point to point IPSEC vpn's currently).
I want to add the Wideband link and use the "Tunneled (Default gateway for VPN traffic)", feature for the current fiber link and the new Wideband link for any other internet traffice. I tried this however as soon as I set my fiber link to "Tunneled (Default gateway for VPN traffic), I lost all connectivity.
I also setup my "VPN" link with the "tunneled" option and my "INTERNET" link with a default route to the internet. This would only let me ping internet sites from the ASA device but not from client computers, also the VPN's would not come backup.
I have tried the sla setting with a DSL line for failover and that works good, i've since got rid of the DSL and want to utilize 2 wan links for different purposes/traffic.
ASA 5510, SSM-10 1GB RAM
ASA version 8.4(1)
ASDM Version 6.4(3)
Context Mode Single
FW Mode Routed
License Security Plus
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Oct 23, 2012
I am trying to block outbound and inbound traffic on TCP 5222 and 5223 on E2500 but cannot figure out how. The reason is I have kids in my house using KiK (texting app) on iPads, iPods etc. My goal is to eliminate this applications ability to function for ANY wireless device connected to my WLAN.
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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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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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Nov 2, 2011
i want to monitor interface traffic in/out by eem and the if the values is overer than some value i will change the policy. for example my router is 2821 is have 2 fastEthernet port , i want to monitor the traffic on fasE1/0 if traffic over than 80Mbps i will change some configuration ( example: change next-hop on static route) for via traffic to interface fasE1/1 for reduce the traffic on interface fasE1/0?
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Mar 8, 2012
I have a Cisco 2821 with ios Version 12.4(21). On that router I have a WAN link that is 550mbit dual. The interface is 1000FD so i need to shape my output traffic to max 550mbit - otherwise my ISP policing is dropping the traffic.
I've looked at this document url... and i'm trying to use this interface command:traffic-shape rate
But the router wont accept rate value 550000000 that should be 550mbit in bits/s
Is it not possible to shape the traffic to 550mbit on the 2821 router?
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Mar 28, 2011
I'm using a Cisco 2821 router to provide temporary Internet access for a private network of about 300 users for a conference at a hotel. The hotel has provided me a public IP address for the WAN side. On the LAN side I have a 10.x.x.x /8 subnet with the router providing DHCP and NATing (overload) across the WAN interface.
Users can pick up an IP address and access the web. Light web pages such as Google tend to load without issue, however if a user does something that takes more time, such as streaming a Youtube trailer or opening an RDP session, the connection will freeze.
It doesn't appear to be related to bandwidth availability. Pings return on average 10-15 ms. However, I will get a request time out about every 10th continual ping. Steaming video will load about 4-6 seconds worth of data, then will appear to freeze without dropping. Doing something like speedtest.net will send a large amount of data then will hang, without ever ending the conversation.
This doesn't happen when I plug a laptop directly into the hotel public Internet line. They also don't have issues with their network similar to this.
I do not have any ACLs, etc. loaded. The router is basically wide open as far as I can tell. I don't see the router resources getting used much at all.
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Feb 14, 2012
MPLS customer with 4 T1s in a multilink. If one of the T1s drops there is a brief delay in traffic picking back up and I actually lose packets from premise back to CO. You can see this loss both with pinging across the circuit and with techs on either end running JPerf. It can take as long as 6 seconds for the reconvergence to actually happen on the multilink and traffic picks back up. In my experience this is normal behavior for Mulitlinks
I'd also like to note that it is indeed much quicker reconvergence when you physically pull the T1, any of the T1s, rather than administratively shutting down one of them and I understand that the hardware is quicker than software and that's a good thing, obviously. I've tried this with and without ppp mulitlink fragment disabled on either end and every other combo between the two. Each of the 4 serial interfaces are on line timing and I tried free-running just on the off chance that it could imrpove the loss, but it gets worse.....back to line timing. I've even tried this on other CPE platforms like two different versions of Adtran CPEs and I get the same thing. Currently I have a new 2821 CPE in place and still get the same thing. Still see a brief amount of traffic loss up to 6-7 seconds or so at times.
7600 side:
interface Multilink592
ip vrf forwarding ******************
ip address *************************
load-interval 30
no peer neighbor-route
ppp multilink
ppp multilink group 592
ppp multilink fragment disable
no cdp enable
service-policy output VPN-TEMPLATE-2(code)
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Jan 5, 2012
On a 2821 Router with 15.1(3)T1
I have an IPSec VPN and NAT configured. Return traffic from an internal NAT host seems to be blocked by the WAN inbound ACL. What is the proper way to allow return traffic from the Internet for this internat NAT host? Note: As a test, removing the deny entry on the WAN ACL allows return traffic.
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Apr 17, 2013
I would like to measure amount of data I have uploaded and downloaded on the internet since last router reboot. I see there is a STATISTICS under STATUS, which lists the packets, but how big is a packet? And can I just take the values under Receive and Transmit (row called Internet) and multiply with packet size?
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Jul 21, 2012
We have ASA 5520 acting as the VPN Server and Cisco 1941 router as EZVPN client. Since last few days client is not able to establish vpn connection. 1941 router is continuously generating the below log messages
001569: Jul 22 12:19:05.883 ABC: %CRYPTO-4-EZVPN_SA_LIMIT: EZVPN(VPNGROUP) Split tunnel attributes(51) greater than max allowed split attributes(50)
001574: Jul 22 12:19:07.835 ABC: %CRYPTO-6-EZVPN_CONNECTION_DOWN: (Client) User=vpn_user Group=VPNGROUP Client_public_addr=<client public ip> Server_public_addr=<server public ip>
004943: Jul 22 11:32:42.247 ABC: %IP_VFR-4-FRAG_TABLE_OVERFLOW: Dialer1: the fragment table has reached its maximum threshold 16
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Jun 28, 2011
when using SNMP on our cisco 3845 the traffic logs are set to refresh every 1 second but the data seems to come in 5 sec burst.so does not some a real time status of the interface throughput.
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Mar 25, 2012
How can I collect the data about the traffic on my Cisco 2960S? Have I use only the snmp? Any workaround for simulate a netflow? The IOS c2960s-universalk9-mz.150-1.SE2.bin.
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Feb 5, 2013
I am trying to connect a Control network that can not have access to the Internet, or any other network for that matter, to my Admin network so that I can retrieve trend data about the plant that goes into a database. Right now the process is print information, hand jam into excel spreadsheet, print again, and hand jam into another excel spreadsheet on the other network. Reports are printed automatically once a day, but would like a simplified way of getting data from one network to the other without having to re-enter data several times. Current policies stipulate no USB drives connected to Control systems. Even if we could loosen that, personnel needed to transfer data is not available and going to each individual machine would take more time than current system.Now that background is laid, I have two 2911 ISR routers with EIGRP configured, each with a 4 port EHWIC card. The 3 L3 ports on the router are setup as follows: interface G0/1 to the internet, interface G0/2 to a wireless back haul, and interface G0/0 for IT network. I then have 3 VLANs setup on the EHWICs for our Admin network. We will move the IT network to a VLAN on the remaining EHWIC port and connect the two 2911's through the G0/0 interface. I am going to have one computer on my Administration network dedicated to receiving the information and have a program that will take that data and import it to a database. I need to allow only that computer to receive traffic from the Control network and I need no traffic to flow back into the Control network. In other words I will transmit data from the control network to the admin computer using one protocol (TFTP more than likely) and block any other traffic coming out of and going into the Control network.
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May 2, 2013
we have ASA 5510 Configured. this is regarding site-to-site VPN.
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