Cisco WAN :: 2851 / Dual Router With T1 Redundancy?
Jan 15, 2013
[URL]I ran across this on the cisco site and I wondering if it was possiable with two 2851's? The part that is most interesting to me is this part of the config (this looks like what allows the use of the y-cable)
Got a situation where Location_A got TWO ISP and Location_B got One ISP.Using ISP 1 link Location_A establishes IPSEC Tunnel with Location_B .How do I establish redundancy from Location_A point of view, if ISP1 is down then ISP2 should establish IPSEC tunnel with Location_B.At Location_A both ISP links terminates on the cisco PIX-525 and all (VPN) crypto configuration is on PIX 525 running version PIX Version 7.2(4)7At Location_B VPN is terminated on a PIX Version 6.3(3).
I have the following: 1 5520 ASA connected to the internet, 2 core switches, and several access switches.Aside from implementing RSTP, VRRP, hard code access and trunk ports, is there any other recommendation you would like to add.
We have Cisco router 2851 and asa firewall. We configured on he router for IP phones and ISP connected. The ISP directly connected on the router and asa firewall connected to the router. We have plan to configure VPN on the router. We have available public ip address. if i configure the VPN on the firewall we need to configure firewall local ip address to public ip address. SO how to configure firewall local ip to public ip ? Where we can configure , mean on the router or firewall. Firewall and router configuration.
Is the 2851 router meet these requirements ? if no. What is the must specific series of the routers suitable for this requirement:
1. Comprehensive interface range supporting T1/E1, NxT1/E1, FE, and High-Speed WAN . 2. Wide array of Layer 2 access protocols including Frame Relay, Ethernet, and PPP/HDLC . 3. Rich and granular QOS and instrumentation for prioritizing mission-critical traffic such as voice . 4. A modular platform with a broad range of interface options. 5. Network Address Translation (NAT), and IP Sec . 6. Four (4) auto sensing LAN Ports (10/100/1000) Mbps built-in routed ports. 7. WAN Interface Slots (4-6 option Slots) . 8. WAN Interface Modules (2xT1/2xE1/2xSerial/2xFE/DS3). 9. Memory (512/1024 MB DRAM) . 10. Built in redundancy (Power Supply) . 11. Two (2) Integrated GE ports with copper and fiber support . 12. Support for a Small form-Factor Plugged ( SFP) port for GE. 13. Support Network Timing Protocol (NTP). 14. Security: On-board encryption Support of up to 2500 VPN tunnels with the AIM-HPII-PLUS Module Antivirus defense support through Network Admission Control (NAC) many more essential security features . 15. Voice : Optional support for Survivable Remote Site Telephony support for local call processing in small enterprise branch offices for up to 240 IP phones. 16. Performance : Up to 1GB DRAM Up to 1GB Flash The maximum transmission unit (MTU) Up to 9576 bytes Throughput up to 1.2 Gbit/s . 17. 110/220 volts. 18. Warranty certified by Sis 98 or by OEM (original equipment manufacturer) . 19. Up to 115.2 Kbps for Console/Aux port with DDR capability. 20. Supports IPv6
I recently obtained a 2851 and have been battling this issue for a week now. An odd set of circumstances happen with the bootstrap startup process. If the router has loss of power or when reloaded; it fails to read the CF card and boots to rommon. I can tftp an image to it (tftpdnld -r) and IOS CAN read the flash card along with any saved configuration.In fact once in IOS, I can wr mem and print the hardware details of the CF card. Once I reload the router it goes to rommon, fails to open the flash, then sits until i tftp the image back. When the router load IOS, it also loads the startup config.I don't think it's a problem with the CF card as IOS can read it. I've tried formatting the card from IOS and from my pc as FAT, FAT16, FAT32, and NTFS - it didn't make a different. I updated the ROMMON to allow for USB booting but haven't purchased a USB Drive yet for testing. The upgrade didn't resolve this issue either. It almost seems like a firmware problem with the EPROM.
Network newbie here asking an embarrassing question on logging We have a Cisco router with the following IOS version. I want to enable logging; so do I need to configure event-log enable before adding the following logging configuration?
One of our client has a Cisco IOS router 2851 with Zone Based Firewalls, enabled.
We tried to configure the router to receive the logs and we receive it in the following format: <189>45: *Apr 11 11:22:14.757: %SYS-5-CONFIG_I: Configured from console by vty0 (10.151.xxx.xxx)<190>46: *Apr 11 11:23:13.109: %FW-6-DROP_PKT: Dropping tcp session 10.151.xxx.xxx:1908 212.58.xxx.xxx:80 due to RST inside current window with ip ident 0<189>47: *Apr 11 11:38:02: %SYS-5-CONFIG_I: Configured from console by vty0 (10.151.xxx.xxx)<190>48: *Apr 11 11:40:57: %FW-6-DROP_PKT: Dropping tcp session 10.151.xxx.xxx:2062 74.115.xxx.xxx:80 on zone-pair Outbound class CMAP_Inspect_Out due to Stray Segment with ip ident 0
However, we support the following format:
<190>3711348: 3711346: Jul 23 15:29:xxx.xxx IST: %FW-6-SESS_AUDIT_TRAIL_START: Start https session: initiator (172.16.14.71:2721) -- responder (132.183.xxx.xxx:443)<190>3711349: 3711347: Jul 23 15:29:59.465 IST: %FW-6-DROP_PKT: Dropping Other session 65.209.xxx.xxx:2721 132.183.106.17:443 due to RST inside current window with ip ident 49293 tcpflags 0x5014 seq.no 1653005683 ack 1796295020<190>3711350: 3711348: Jul 23 15:30:04.377 IST: %FW-6-SESS_AUDIT_TRAIL: Stop https session: initiator (172.16.xxx.xxx:2721) sent 807 bytes -- responder (132.183.xxx.xxx:443) sent 2062 bytes
What are the exact steps required to recieve the above format? If the logging needs to be enabled on Access Lists, need exact commands, from the console config mode?
I'm just wondering if there is any documentation that confirms if the 2 built-in Gigabit ports on a Cisco 2851 router support (or otherwise) auto-mdix.I can find information for the modules but not the 2 built-in ports.
We have Cisco 2851 Router part code CISCO2851-SEC/K9 facing issue while set peer configuration, issue description below.
Issue:We are facing the problem while configuring set peer as when we try to this we face error like 'unable to set peer.maximum numbwe of peer (40)exceeded'
We suspected the IOS issue hence we have gone for IOS upgrade for this Router but this error is still coming while configuring set peer.
Previous IOS: c2800nm-advsecurityk9-mz.124-15.T7.bin New IOS:c2800nm-advsecurityk9-mz.124-24.T7.bin
We are attaching here the snap shot of error that is coming while configuring the Router with set peer command along with show tech of the Router to understand this case brief.
Cisco Router 2851 connected with one ISP using 2 serials. the case is :
1)s0/0/1.1 is the only utilized and s0/0/0.1 utilization is zero. 2)when shutting down s0/0/1.1 : the other ,not utalized, link work perfect and forward all the traffic.
Attached the configuration file with output of show interfaces command.
I am having a setup with a 2851 router & websense url filtering server where I need to forward the traffic to websense server for all the internet requests. The http traffic is getting filtered properly, but the https traffic is not getting filtered. The two commands I ahev given for http & http are as follows: ip inspect name test http urlfilter ip inspect name test https.
1) Does the 6500 series router support supervisor module redundancy like the 7304 does? IE, can I put two identical sup720 modules in the chassis for failover?
2) Can I use any ethernet interface on any line card on the 6500 series for router interfaces? If not, which line cards work as router interfaces?
3) Differences between the 6500 series and the 7600 series? Can I use a sup720 modules from a 6500 in a 7600?
I would like to make a design with 4 Nexus 5596UP. 2 of them equipped with Layer 3 Expansion Module so they can serve as core layer and the other 2 Nexus used as Layer 2 for aggregation server layer.The 2 Nexus in the core layer will run HSRP and will peer with ISP via BGP for Internet connection The 2 Nexus in the aggregation layer will be configured as layer 2 device and have FEX and switches connected to them.What I am ensure of is how the vpc and port-channel configuration should look like between the 4 nexus. What I was thinking is to run vpc between the 2 Nexus in the aggregation layer and between the 2 Nexus in the core layer. Than I was thinking of connecting each Nexus in the aggragtion layer to both Nexus in the core layer using port-channel and vice-versa.
how to change our wireless setup. Currently, we have 2 Cisco AiroNet 1130 WAP's in the office that go directly into the 2 POE ports on our Cisco ASA 5500. These WAP's have 1 SSID and are using WEP for security. After demonstrating the flaws of WEP to my boss, he has agreed that we should use something more secure and I've suggested WPA. We want visitors to our office to be able to hop on our wireless but on a separate guest SSID with WEP.
I'd like the internal SSID to route to the ASA and take the default route to the internet (it will be our new fiber connection once it's installed in a couple weeks). The default route is whichever connection is working since our ASA 5500 will fail over when it detects an outage.
I'd like the guest SSID to route to the ASA and then go over our existing cable connection. This connection will be our backup once the fiber connection is installed. Since we won't be using it very often, but will be paying for it, I advised that we send all guest wireless traffic over this connection since 50/5 is plenty for guests.
The current SSID (which will be the internal SSID) has no VLAN. We do currently have a few VLANS on our network, one for voice (.42) and one for data (.100) and the default (.0). What device to I create the VLAN on (Cisco 5500?) and how to I setup the WAP? I need very basic instructions to start and I'm also trying to do this without causing downtime if possible.
I've attached a diagram of what it should look like. Red indicates our internal network and Blue indicates the guest network. I can send screenshots as well.
I wanted to ask a question about the diagram I have included. We are bringing up 2 MPLS WAN connections and would like some specifics on the best design. We are using BGP to the providers. From there we have big questions. We can run BGP internal and are licensed to do so on the N5K's. The N5Ks are currently using HSRP for inside LAN clients as default gateway. We want to load balance and provide redundant routes using a dynamic approach. Should we use BGP internal utilizing the connections between the routers? Should we use HSRP on the routers? How best to get the routes to the N5K and should we be considering this?
I run 2 RV042 V1 for home and office with Gateway to Gateway VPN connection with single WAN connection in use. Everything works like a charm!
I was even able to create VPN connection with 2 WAN connection on one Router and 1 WAN connection on another with Smart link failover and VPN Tunel Backup.
I got problem though when i tried more complex connection diagram. [URL]
So basically I now have 2 ISP connections on each point with Static IPs and I'd like VPN Connection to be alive for ALL 4 options automatically with failovers (smart links) And tunel backups but i'm not sure if that's ever possible with my equipment.
We have a Cisco 2851 router that crashes every night. Below is the 'show log' output. The provider is telling us that it is our equipment. We have replaced the router and still have the same problem. Is it our equipment or the provider?
Feb 15 19:29:43: %BGP-5-ADJCHANGE: neighbor x.x.x.x Down Interface flap Feb 15 19:29:43: %BGP_SESSION-5-ADJCHANGE: neighbor x.x.x.x IPv4 Unicast topology base removed from session Interface flap Feb 15 19:29:44: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0:0, changed state to down Feb 15 22:34:13: %CONTROLLER-5-UPDOWN: Controller T1 0/0/0, changed state to down (LOS detected) Feb 15 22:34:15: %LINK-3-UPDOWN: Interface Serial0/0/0:0, changed state to down
I have a Cisco 2851 (c2800nm-advipservicesk9-mz.124-25d.bin) Router configured with one site-to-site vpn. Is it possible to configure a failover vpn tunnel on this router?
Do I need to obtain license keys/files when upgrading a 2851 to IOS 15.x? I'm getting a bit confused seeing the documentation that says 1) IOS has gone to a universal image and 2) that feature sets are unlocked based on the installed license.
I was able to download a feature specific IOS image for the 2851 and it did not bother me about licensing upon boot up.
I read one post on here that stated 2800/3800 series (G1) do not have to worry about the licensing piece and that it's just 2900/3900 series (G2) hardware that require it.
I seem to be having an issue getting a 3xT1 bonded solution to work. I can get 2 out of the 3 T1s to come up and pass traffic, but I can not get the third one to be added to the solution.
Up to today I used Verizoon 4G to a Windows Visata box running Internet connection Sharing to get my home lab connected to the Internet . All was working well.
Today I had Hughesnet come and installl their service and I can no longer get access to the Internet from my PC netowrk. my VPN to my office for my IP phone coomes up an works just fine. At the router I do have Internet access which then leads me to believe that my problem is NAT related.
My router is a 2851.
When I enter PING 4.2.2.2 I get !!!!! but when i enter PING 4.2.2.2 SOURCE 192.168.69.3 I get .....
I have a Cisco 2851 (with a 4 port switch module) that I am trying to set up with two different internet connections, and have it route traffic out to them based on the source IP. One connection is a 50mb Comcast connection, another is our T1 that our servers are hosted on. The goal is to guide server/phone system traffic to the T1 and have the rest default to the Comcast. I currently have the 2851 connected to our Layer 3 switch (Dell Powerconnect 6224) with a subnet created between them. Static routes have been created on the 2851 back to all of our existing subnets. Traffic flows internally without a problem between the subnets and 2851 (and vice versa). I set up the 2851 with route-map's in the NAT to control the flow of traffic, with the default route set to the Comcast connection. Default route works great, speedtest shows full speeds and everything looks great. The problem happens when I apply my route-map policy to the internal LAN interface with the ACL list of IP's that I want to guide to the T1 (with a next-hop of the T1's IP address). I tested some tracert's and pings from one of the IP's in this list and they would stop at the T1 modem and not go any further. I did a "show ip nat translations" and noticed that the "outside" portion (right half) was blank for every IP that was in the ACL or related to the T1. So my guess is it looks like this is not doing NAT for the T1? I double-checked that I had my "ip nat inside" on the LAN interface and "ip nat ouside" on the T1 VLAN interface and Comcast interface and they were there.
I am having issues bringing up a tunnel between a cisco 861 router and Cisco 2851 router. Tunnel has been dropping every week atleast once or twice. Usually router reboot fixes it but today it is just not coming back up. have updatee remote, reloaded the config still no use. It seems like it is partially coming up but I see the following two messages on the main router:
1- Death by retransmission P1
2- 11:03:03.789: %CRYPTO-6-IKMP_NOT_ENCRYPTED: IKE packet from 12.234.109.169 was not encrypted and it should've been
I have checked the config on both routers it is the same as the VPN was up and we didn't make any changes on either of the two routers.
I have Cisco 2851 router & need to allocate bandwith based on IP's. eg. 192.168.1.1 should use 7 Mbps & 192.168.1.2 should use 2 Mbps & 192.168.1.3 should use 1 Mbps. Let me know the configuration on how to execute it on a router.