Cisco Switching/Routing :: 2851 Spitting Out Symbols
Dec 7, 2011
I am a networking student and was playing around with a Cisco 2800 series router. Couldn't figure out the password or user name so was following these steps from this KB {URL}.
For Password and User Reset..... Although by the time I got to selecting a username and password the computer had went to sleep so I started over again. When I restarting this process I ejected the Flash memory told it to reset but failed to reinsert the flash card before it rebooting. Now in the terminal I get symbols instead of words. What can I do ?
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Nov 27, 2012
I have one cisco 3750G-48 switch, one cisco 3560G-PS switch, Cisco UC520, cisco 2851 and cisco wireless access point.i have setup up intervlan routing between the two cisco switches and the uc520 with a total of four VLANS, the problem i'm having is with the 2851 router, I have created a trunk between the 3750 switch and the 2851 router. should I create subinterfaces on the 2851 router for the four vlans by doing gigabieethernet 0/0.1, 0/0.100 and so on or should I create BVI subinterfaces.
reason I ask is I created four vlans on the vtp server switch which is the 3750 and I connected the uc520 to the 3750 switch via a trunk interface and set up vtp client on the uc520, after I setup p the vtp on the uc520 the vlans were automatically created on the uc520 with each vlan having its own BVI interface.
So I am not sure how to configure the 2851 router to interact with the four vlans. also the 2851 router have two hwic 1adsl wics installed which will have two adsl connections coming in.how to set up the 2851.
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Dec 9, 2012
I have a cisco 2851 router as the edge router, I have a 3750G and a 3560G switch and configured intervlan routing with four vlans, also connected to the switches a four servers and one has active directory and a dns server.i am able to ping from all te servers fine from different vlans and the servers are able to ping the edge router. the problem I am having is with DNS, in the edge router i have configured the isp's dns server address in ip name-server and i am able to reach the outside world.
the problem im having is the servers are not able to reach the outside, do i need to do something in the edge router to forward it to the 3750g or do i have to add my isp's dns servers on the 3750g with ip name-server.
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Dec 26, 2010
I had these error messages on both my Cisco 2851 and on my Cisco Catalyst 6506.
On Cisco 2851:
%SYS-SP-3-CPUHOG: Task is running for (2000)msecs, more than (2000)msecs (4/4),process = SEA write CF process. [code]...
And on 6506:
Dec 27 15:20:55 MET: %SYS-SP-3-CPUHOG: Task is running for (2000)msecs, more than (2000)msecs (129/129),process = SEA write CF process.[ code]...
I have these IOS versions on my Cisco:
Cisco 2851: 15.0(1)M4
Cisco 6506: 12.2(33)SXI
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Jan 23, 2010
I have a Head Quarter and a remote site running over a OC3 circuit. [code]
On the HQ, I have a Cisco VXR7204 running IOS 12.4.15T(10) Advanced IP Serviceand the remote site is a Cisco 2851 also running IOS 12.4.15T(10) Advanced Ip Service. The HQ has a Riverbed Steelhead 5050H capable of delivering 100MbpsWCCP throughput. The remote site has a Riverbed Steelhead 1050H which can deliver 10Mbps WCCP throughput. At the HQ, the LAN network is 192.168.251.0/24.The Steelhead residing on the 192.168.251.0 network.At the remote site, the LAN network is 192.168.103.0/24 and 192.168.211.0/24.The Riverbed resides on the 192.168.103.0/24 network.
When a host on network 192.168.211.0/24 download a file from network192.168.251.0/24 network via http, the CPU on the Cisco 2851 goes to 99% utilization and that it stays there for the duration of the http session. There is very little traffic goes across the WAN whichis the way it should be but the CPU on the 2851 stays at constant at99% CPU utilization.
Why would WCCP consume so much CPU on the Cisco 2851? By the way, I am only getting about 5Mbps download instead of 90Mbps download, I think because of the high CPU on the router?
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Dec 29, 2012
I have a Cisco 2851 router and need an additional gigabit Ethernet port. How to get the part number I need to order?
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Oct 18, 2012
[code]....
I can access the ACNS with this config. The issue is that it will not cache anything when I enable WCCP on both ends. I am unable to set the gateway to the IP (even when static) to the WAN interface IP with the error Network Unreachable by content engine. If I address it within the 192.168.2.X network and gateway to 2.1, it locks up when cache is enabled. 192.168.0.5 (the external wan int) is unreachable as a gateway.
I've tried the unnumbered ip on the internal interface but then the service module won't accept an IP stating that the router side must have an IP set.
I had WCCP attempting to cache but timing out on everything without caching a thing. I want/need to understand the IP routing before I get ahead of myself.
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Oct 26, 2012
I have a site that is very dense, but not high throughput. I have 4x48 port switches all 3560 and 1 2851 router. The switches are pretty much full to the brim but the site is never completly lit, they just like to move around a lot. However i wanted to provide this site with as much redundnace as possible. So my first thought was to build redundant pathing with the switches so that they could loose a switch and not have a single point of failure. So therefore I built a ring. SW1 to SW2, SW2 to SW3, SW3 to SW4, SW4 to SW1. To make this even more redundant against port hardware failure, i used two uplinks for each and built an etherchannel. is it good practice to use Etherchannel and Spanning Tree together?So i now have a good redundant LAN switching topology. I have multiple VLANs at the site so I am using Rapid-PVST. I did not set priorities on the switches as I don't think that is really truly necessary, but correct me if I am wrong!Ok so next step is to make sure that my WAN connection for all of these switches is redundant. I have a 2851 router, with 1 of the built in interfaces dedicated to our ethernet hand-off WAN connection (MPLS in this case using BGP routing). The other would be used as an uplink. I also got an additional card for the Router so that i can have redudant local LAN connections. I then built up some IRB bridges so that I could uplink the Router to SW1 and SW3. Is it good practice to use IRB Bridging on a Router to provide redundancy?So at this site i have the first part running, and it works pretty well but I have had 1 strage issue, which has to do with after a failure and re-convergence of spanning-tree, it seems that DHCP starts failing to work. I actually had to go into each of my switches make a dummy VLAN interface and put on helper-addresses to get them to work. They are not L3 switches (programatically speaking) so they should just forward the broadcast packet onto the router, which DOES have the helper-addresses programmed,Also at another site I have the bridge router setup configured, just without so many switches, and no etherchannel between the switches. This seems to work flawlessly, but the site is very small so performance issues would be difficult to spot since they are just thin-clients coming back to a Citrix server over a single T1.
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Mar 26, 2013
I have been tasked with creating a VPN tunnel between our site and a vendor's support center. I successfully created the tunnel, which negotiates fine, but I can't seem to get the traffic flowing properly. The issue that I think I am having is that the vendor is using a public IP address for their remote internal network instead of a public one. At least that's what I think the problem is, but I'm probably wrong Here is a diagram of how the traffic should be flowing:
Office #3 Office #3 Office #1 Office #1 Vendor Vendor
Desktop PC Gateway Gateway Firewall Public IP Private LAN
192.168.5.158 -> 192.168.5.1 -> EVPL -> 192.168.0.11 -> 192.168.0.5 -> Internet -> 68.x.x.x -> 192.68.48.0/22
Cisco 2851 Cisco 2851 ASA 5510 Cisco 7206
When I trace a route from the desktop PC to an IP address on the remote vendor end, instead of going to the ASA the traffic goes to another office. Here is what is happening to the traffic:
1 <1 ms <1 ms <1 ms 192.168.5.1 (Office #3 Gateway)
2 3 ms 3 ms 3 ms 172.20.254.5 (Office #3 EVPL VLAN to Office #2)
3 3 ms 3 ms 3 ms 192.168.1.14 (Office #2 Gateway)
4 4 ms 4 ms 4 ms 173.xxx.xxx.xxx (Public Internet)
The office with the desktop PC has no local internet access, so all internet traffic gets routed to office #2 (192.168.1.0) as shown above. I'm asuming this is happening because the vendor is using a public IP address instead of a private IP address for their network. The routers look for the shortest route, which would be the internet, and then route the traffic there. Instead they should be routing the traffic to office #1's ASA and then on to the remote vendor site. The 2851 routers are using EIGRP. I don't know if that is causing this to happen but I tried adding static routes and the traffic always goes to the same place. I can provide configurations on any of the devices mentioned, save for the vendor's.
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Aug 30, 2012
I installed windows 7 onto my laptop and before i install when i would press a function key a symbol would appear on the screen. But now when i press the function key no symbol would appear on my laptop screen. i cant see how much my volume is up or down or either my brightness.
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Feb 18, 2013
I have a SG500-28-K9-G5 at work and I'm tyring to connect to it trough the console port via Putty and get wierd symbols: When I press any button I see alot of wierd symbols comming up, for example if I press shift+6 or Enter (or anything). [code]
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Apr 27, 2013
Is it possible somehow to use Unicode symbols on X2000 wi-fi+adsl router?
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Feb 15, 2012
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
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Dec 20, 2011
We want to get MIB files for snmp v2 from Cisco 2851 Router running with IOS below,
c2800nm-advsecurityk9-mz.124-15.T7.bin
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Jan 31, 2012
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.
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Aug 29, 2010
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?
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Oct 14, 2012
I have an office with 50 users. I have both a 2851 and a 2921 available. Which one would be a better fit?
Comparativley, which is the more powerful unit?
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Feb 16, 2012
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.
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Jan 23, 2013
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
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Oct 31, 2012
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.
Hardware: 2851
IOS: c2800nm-advipservicesk9-mz.124-15.T8.bin
Modules:
NAME: "VWIC2-2MFT-T1/E1 - 2-Port RJ-48 Multiflex Trunk - T1/E1 on Slot 0 SubSlot 0", DESCR: "VWIC2-2MFT-T1/E1 - 2-Port RJ-48 Multiflex Trunk - T1/E1"
PID: VWIC2-2MFT-T1/E1 , VID: V01 ,
[Code]....
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Apr 24, 2013
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 .....
Here is my config info:
crypto isakmp policy 1
encr 3des
hash md5(code)
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Mar 29, 2012
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.
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Nov 15, 2012
I am using a 2851 router in mpls network. We had a power shut down activity recently and post to that i could not find any logs in the router.
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Jun 11, 2013
I am trying to find information on what the max clock rate supported on WIC-2T on a Cisco 2851 and Cisco 3845 Routers.
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Nov 12, 2012
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.
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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)
redundancy
#
mode y-cable
how to have a redundant border router with a T1
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Sep 4, 2012
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?
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Sep 4, 2011
I need a configuration example of MPLS with VPN as a backup Router cisco 2851
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Feb 2, 2011
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.
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May 16, 2011
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.
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Feb 6, 2013
I am looking to add a new connection between a Cisco 2851 and a Cisco 3745. Currently there are two T1 connections between them for a internal 192.168.5.0 network but I would like to add a ethernet connection to give a larger pipe for when transfering large files via that network. Can I just add the ethernet to the multigroup and shut the ethernet connection down when not needed(to limit it to t1 speeds) or is there some other way of doing this?
[code]....
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Nov 27, 2011
I currently have a 2851 router with 2Mbps point-to-point leased circuit on its serial interface and most of the time its congested. Any tool for measuring the current consumption that is happening on the link other than netflow.Was looking for something for a graph or chart displaying the current consumption rate.
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May 10, 2012
I was making some changes in routers and after I rolled back configuration a gre tunnel won't work. It's GRE Tunnel between a Cisco 7600 and Cisco 2851.
It seems like 7600 sent packets unencrypted. On C2851 is received this message:
%CRYPTO-4-RECVD_PKT_NOT_IPSEC: Rec'd packet not an IPSEC packet.
(ip) vrf/dest_addr= /10.0.0.10, src_addr= 10.0.0.18, prot= 47
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