Cisco WAN :: Port Mirroring For 851W With 12.4T?
Jan 31, 2011
I have looked up the command sequence for port mirroring and it seems pretty straight forward however in my case the command will not execute.
I have a 851W with 12.4T
If I do: #monitor session 1 source interface fa 4 (wan port)
i get the response invalid input detected however if I do the same command for fa 1, fa ,2 and fa 3 they work
Using the ? shows the valid entries are [0-4] for fastethernet
I just want to monitor WAN traffic with WireShark, particularly DDNS requests, with a spare PC connected to a free lan port.
I would use a hub on the Wan connection but unfortunately I do not have one at the moment.
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Mar 14, 2013
i was able to configure (via SF200 web interface) a port mirroring from port FE17 to FE7.i have supressed this port mirroring.when i try to reconfigure a port mirroring from port FE17 to FE3. The SF200 web interface crash. the SF200 seems to reboot.
i have updated the SF200 firmware from V1.1.2.0 to V1.1.2.9.44 when i was able to configure (via SF200 web interface) a port mirroring from port FE17 to FE7.But after having suppressed this port mirroring again, i was not able to reconfigure a new port mirroring from port FE1 to FE3 (the SF200 hangs).
i have also tried to return to default factory setting but this does not solve the issue.i am working on SF200-24P
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Mar 2, 2011
is ASR 1006 supported span port or port mirroring? Any config about that?
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Apr 30, 2013
i want to enable a port 7000 and 514 on my cisco 851w router. using the command-line?
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Oct 31, 2011
I have a Cisco Catalyst 3750X switch, and I have configured port mirroring on it. Traffic from 12 of the 1G ports will be mirrored to both 10G ports, and I have connected both 10G ports to a server that captures the traffic.
Currently, I have one of the 12 1G ports connected to another server that replays a pcap file once at maximum speed (i.e. option -t in tcpreplay). I thought that this setup means I should get twice the number of packets (and rate) from the two 10G ports. However, I noticed that although the original pcap file contains 4288 packets, the number of packets from the two 10G ports varies between 31000 to 34000 packets, which is about 7 to 8 times the original number of packets. Why am I getting more than twice the amount of traffic, and why does the output vary?
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Apr 28, 2013
I have created a mirror to copy all packets from Interface gi1 to interface gi28. I don't see any port 80 traffic, or 443 or any revelant traffic. I see mostly broadcast from other devices. I have a security device that is logging all the copied packets from my firewall for malware/IPS, etc inspection.Right now I have it monitoring vlan 1 in the hope that it would resolve this issue but I see no change.
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May 3, 2011
I want to configure port mirroring on SG300 swtich, port monitoring status is "Not Ready" , and i can not monitor the source interface!
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Nov 8, 2011
I'm troubleshooting a LAN issue I have, and I wanted to hook up wireshark to record traffic over the course of a couple of hours for later diagnostics. I went into the web administration interface, clicked Administration > Diagnostics > Port and VLAN Mirroring, and added a port mirror from the port I wanted to watch to a port to which I had connected a laptop. I picked the Tx and Rx options, and clicked Apply.I did receive lots of traffic in wireshark, but I noticed immediately that the server on the port I had mirrored was suddenly unavailable on the network -- pings timed out. This lasted until I removed the mirror, then the server was suddenly reachable once again.Does this feature not work the way I had thought it does? What I saw looked more like a forward than what I would call a mirror. The documentation leads me to believe mirroring is intended to be used in just the way I was attempting to use it.
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Sep 14, 2011
I'm trying to setup port mirroring on a Cisco ASA 5510, but when I try to use the switchport monitor command, that command is not recognized.I've selected what interface I want to configure (conf-if), but the switchport command seems to not be part of the IOS.I'm running ASA version 8.2(1)
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Oct 25, 2012
I have been told there is a limit (8) on the number of source ports that can be mirrored to a given destination port. I can find no specifications or other documentation to corroborate this claim. Any factual data to confirm or refute this claim?
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Oct 21, 2012
I've just installed 2 of these in my workplace on a PLC network.I'm now looking to set one of the ports up as my diagnostic port and would like to be able to mirror any of the other ports to this port.I believe it is called SPAN on Cisco switches.The only reference I can find to it is configuring via Telnet which I haven't got a clue about.On my old Wiedmuller switches it was just a few clicks away.
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Jan 24, 2013
Recently our company purchased 3 Lynksys SGE2010p, At the moment they work as a stack but as we are implementing UCCX we need to mirror 15 ports but during the provisioning i've noticed that the limit is 8 ports per stack. I'm wondering whether this is a known issue or just a known limitation . I believe that most probably i'll need to move back to stand alone mode so i could configure 8 mirrored ports per switch.
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Mar 1, 2006
Does it have this switch some port mirroring capability (SPAN or other)?
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Oct 30, 2012
I am trying to configure a SNORT IDS system running on a physical machine using Linux as the base OS. I have a small lab network setup with 3 VLANs, a 3548 switch and a 2611 router acting as the router on a stick/inter-vlan router. My goal is to setup SNORT as a host-based IDS system. To do that I know I need to use the "port monitor" command on the switch and I have tested this and it works fine only when the snort system and the traffic I want to monitor reside on the same VLAN.My problem is I want to be able to monitor a trunk link betwee the switch and router to see traffic coming from my 3 VLANs which contain servers. My goal is to run attacks on the servers to test SNORT's effectiveness.
Relevant information from my configuration: interface fa 0/1 on switch is the trunk like carry 3 vlans to the router On the switch:
int fa 0/1
switchport mode trunk
int fa 0/5
port monitor fa 0/1
switchport mode access
The switch will not allow me to configure fa 0/5 as a trunk, only can be an access port.So right now, SNORT does not see any traffic other than traffic from my router to the switch. I assume because this is going over the native VLAN (1 in this case) and that is the same VLAN that SNORT box resides on on interface fa 0/5. So I know the span is working to an extent, but traffic from my other VLANs (server to server traffic) does not show on SNORT at all.I have done some research on Cisco.com and see the following seemingly contradicting information:
VLAN Filtering When you monitor a trunk port as a source port, all VLANs active on the trunk are monitored by default. You can use VLAN filtering in order to limit SPAN traffic monitoring on trunk source ports to specific VLANs Then I see, under the section for the 3500 series: A monitor port cannot be a dynamic-access port or a trunk port. However, a static-access port can monitor a VLAN on a trunk, a multi-VLAN, or a dynamic-access port. The VLAN that is monitored is the one that is associated with the static-access port.
My question is, does that mean the 3548 cannot support spanning a trunk link and having all VLANs on that trunk be monitored correctly to the monitoring port? I know the 3548 is old, but it is the only thing right now I have to work with. I could put the SNORT box inline on the network, but that is another mess in itself.
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Sep 5, 2011
Does the ESW 520 24P Support Mirroring 20 Ports Traffic to 1 Destination Port?
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May 2, 2011
If switches on a network doesn't support remote port mirroring and only local port mirroring, What are the options to still capture all the traffic from all switches on 1 single core switch?
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Apr 23, 2013
Are you only able to have two sessions for port mirroring on a Cisco 4510?
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May 20, 2013
I have cisco 2651. It contains two FastEthernet interfaces: Fa0/0, Fa0/1.Fa0/1 has an ip address. Fa0/0 hasn't an ip address.I need to create monitor session from source Fa0/1 to destination Fa0/0. Then i want to connect my notebook to Fa0/0 to analyze some traffic from port Fa0/1
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Oct 24, 2012
I am very new to using the CISCO IOS. Here is the situation: I have a CISCO 851W router in the garage that I want to connect to my Linksys router in the office, which is connected to the internet. The 851W is connected from it's WAN port to Lan port 1 of the Linksys router. Now, currently that ethernet cable is a straight-through cable. Does it have to be crossover? If so, I can fix that.So I have no idea how to give the 851W internet access I am a total CISCO noob. I will leave it to you guys to recommend what IP to assign the router and subnet.
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Feb 1, 2011
I am trying to configure QoS on my Cisco 851w router using the class-map command.However it won't accept the class-map command.The router is running cisco IOS version 12.4(15)T10 "C850-advsecurityk9-mz.124-15.T10.bin".
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Feb 3, 2011
I have looked at the Cisco Feature Navigator and according to the output with IOS 12.4(15)T1 thru T13 there is support for multiple SSID's and the feature "Multiple Basic Service Set ID" should be supported.
When I try to invoke that command mbssid on my Dot11 interface I get 'Invalid' response. Am I missing something here? Is the Feature Navigator misleading me or am I doing something wrong?
All I want to do is broadcast both SSID's that I currently have configured. Currently only one guest mode SSID is allowed and broadcast.
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May 16, 2011
My 851W will not complete the boot up process, here is the output during bootup(c) of the Commercial Computer Software - RestrictedRights clause at FAR sec. 52.227-19 and subparagraph(c) (1) (ii) of the Rights in Technical Data and ComputerSoftware clause at DFARS sec. 252.227-7013. Cisco IOS Software, C850 Software (C850-ADVSECURITYK9-M), Version 12.4(15)T14, RELEASE SOFTWARE (fc2)Technical Support: [URL] Copyright (c) 1986-2010 by Cisco Systems, Inc.Compiled Wed 18-Aug-10 02:37 by prod_rel_teamImage text-base: 0x8002007C, data-base: 0x814ECE54This product contains cryptographic features and is subject to UnitedStates and local country laws governing import, export, transfer anduse. Delivery of Cisco cryptographic products does not imply third-party authority to import, export, distribute or use encryption.Importers, exporters, distributors and users are responsible for compliance with U.S. and local country laws. By using this product you agree to comply with applicable laws and regulations. If you are unable to comply with U.S. and local laws, return this product immediately.
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Jun 21, 2011
I bought a Cisco 851W router from a coworker about a year ago and tried setting it up at my home with nothing but headaches. I finally gave up and went with DD-WRT and have yet to look back (my $40 router outperforms this thing on so many levels, but I'm getting off-topic!). I recently re-discovered this beast and pulled it out of storage to see if I could get a test network setup at home to practice on. I checked for any IOS updates and downloaded (and installed) the lastest image (c850-advsecurityk9-mz.124-15.T15.bin). I consoled in and verified the initial 10.10.10.1 IP was configured in the VLAN1 interface and directly connected a PC to one of the switchports and pulled a 10.10.10.2 address. I pull up SDM from my browser (I have used FF, IE, and Chrome, all with the same results. Java version is the latest, 6 Update 26.) and it launches the initial configuration wizard. I go through the steps and get up to the DHCP Configuration (after LAN, before Internet/WAN setup) and try to click Next and nothing happens. It doesn't freeze as I can easily go Back, but can never move forward beyond the DHCP configuration. Pressing Cancel on the wizard just shuts down SDM as a whole and exits.
In my troubleshooting steps, I did notice that as soon as I click Next in the DHCP configuration, nothing will happen in the wizard, but the SDM window in the background will automatically present the "Apply Changes" and "Discard Changes" buttons, which weren't there in the previous steps. Of course, neither of those are clickable due to the wizard being open. I really don't want to configure this thing from scratch using the CLI if I don't have to..is there ANY way I can bypass the SDM Wizard at all? Also, I'm running SDM Express, would downloading ASDM and trying to connect from there make any difference?
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Feb 11, 2011
I have been trying to get my 851W to work with DDNS for a long while now. In fact I walked away from the problem in frustration and loaded DD Client on a Linux box until I had time to re-visit this. The folks at Zone Edit were not able to offer much with CLI problems.
When I debug DDHS updates I get to a point where the the router tries to resolve the DDNS update address and fails.So I have a number of questions:
a) Is this error the result of lack of DNS server names written to the config?
b) My WAN interface is a DHCP client to my modem. If the DDNS updater does need to resolve a name, shouldn't the DNS server info be provided by the DHCP process for the WAN interface? How do I ensure that name servers are automatically assigned for the DDNS updater to use?
[Code] ........
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May 28, 2011
using task manager in XP it is clear that while browsing data is being uploaded mirroring the data downloaded..ie in a given period if 18mB comes downstream (just surfing) then 11mB goes upstream. The graph in task manager shows that the peaks and troughs of the data upstream and downstream exactly correspond and watching the bytes tick over confirms that data goes out for every data coming in.I assume that this should not happen? I realise ip protocols have some kind of error detection that may require uploading data, but the amount sent seems excessive! From my limited understanding of networking and running wireshark it looks like that when packets come from an ip on the web ( i use the terms web/internet interchangeably ) then packets are sent out to the same ip ... using TCP and HTTP ( I don't really understand them ). The info for one such packet going out is "Continuation or non-HTTP traffic" using the HTTP protocol, which sounds a bit contradictory. I regularly run virus scans and rarely find anything. The cpu regularly maxes out and its usually something to do with firefox ( I've heard of buffer overflows but i assume the problem is a relatively old processor and hardware).The browser is firefox. OS is XP.Coincidentally, the pc was recently rebooting after crashing until I disabled "restart on system failure" which prevented the crashes ( if they were crashes and not just the system reacting to an error ). Again, that is a bit suspicious but maybe not. Spybot, bit defender quickscan,avira, zone alarm, malwarebytes etc haven't flagged anything up.Maybe the router is not configured properly. As with all these things, there will be some simpler things to start with to diagnose this issue (if there is one ) but I don't know what they are.The pc uses wifi to connect. The isp is not the best and the speed is pretty bad for adsl. Every couple of days the router needs rebooting because it stops giving out ip's.
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Oct 13, 2011
I have 2 X E4200 router, one is directly connected to the internet and the other is in the bridge mode connected to the first router. I have apple TV connected directly with the bridge router on one of the Ethernet port.I notice that when you start apple Airplay mirroring on the iPad2 both the routers will hangs with no reason and the only way to fix it is to reboot the routers. I have reset both the routers to factory default twice they both are running firmware 1.0.03 build 14 .
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Oct 25, 2012
I have a CISCO 851W router in the garage that I want to connect to my Linksys router in the office, which is connected to the internet.The 851W is connected from it's WAN port to Lan port 1 of the Linksys router. Now, currently that ethernet cable is a straight-through cable. Does it have to be crossover? If so, I can fix that.
I want the default gateway for the CISCO router to be 192.168.2.1. I am not sure how to configure that. [URL]
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Mar 2, 2013
I want to record all activity on my WAG320N either by continuously downloading the log or by promiscuously mirroring all traffic to a nominated computer for analysis.
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Mar 5, 2013
I have a problem when doing Apple Airplay mirroring from my iphone5. Every time it kmocks the wifi signal off so I need to reboot the router. This is only happening on the iphone 5, and not other apple devices using mirroring. Our ipad 3 mirrors perfectly without affecting the wifi. There isn't any specific settings on the iphone 5 for airplay apart from setting it on and off.
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Jun 1, 2011
Router A is the main router which Router B tunnels into connect to the location.Router A has a static IP address and Router B has a dynamic I am coming in new on the project so I did not setup this router and I am slightly confused. The tunnel is working however, the sites are not able to share files. Router B would like to be able to see all files on Router A and share printers etc...how the VPN is setup, IP addressing scheme and NAT.
Router A Config
Using 3695 out of 131072 bytes!version 12.4no service padservice timestamps debug datetime msecservice timestamps log datetime msecservice password-encryption!hostname XXXXXX!boot-start-markerboot-end-marker!no logging bufferedenable secret 5 XXXXXXXXXenable password 7 XXXXXXXXXX!aaa new-model!!aaa authentication login default localaaa authorization exec default local !!aaa session-id commonno ip dhcp use vrf connectedip dhcp excluded-address 10.0.0.1 10.0.0.99ip dhcp excluded-address 10.0.0.250 10.0.0.254!ip dhcp pool Internal-net import all network 10.0.0.0 255.255.255.0 default-router 10.0.0.254 domain-name XXXXXXXXXX dns-server 199.X.X.X 199.X.X.X lease 4!!ip cefip inspect name MYFW tcpip inspect name MYFW udpno ip domain lookupip domain name XXXXXXXXXX!!!!!username XXXXX privilege 15 password 7 XXXXXXXXXX!! !crypto isakmp policy 1 authentication pre-sharecrypto isakmp key XXXXX address 0.0.0.0 0.0.0.0!!crypto ipsec transform-set 3DES-SHA esp-3des esp-sha-hmac crypto ipsec df-bit clear!crypto ipsec profile vpnprof set transform-set 3DES-SHA !!bridge irb!!!interface Tunnel0 ip address 10.10.10.1 255.255.255.0 no ip redirects ip mtu 1350 ip nhrp authentication donttell ip nhrp map multicast
[code]....
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Aug 15, 2012
I am having difficulty following the logic of the port-translation. Here is the configuration on a 5505 with 8.3,So I would have thought the outside access-list should reference the 'mapped' port but even with 3398 open I cannot remote desktop to the host. If I open 3389 then I can connect successfully.
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May 8, 2012
On the supervisor card of a cisco 6500 series, according to the following link, [URL] it only has 2 uplink ports on the card. Would I be correct in assuming that I only have those to ports that I can configure IP addresses on?
The cisco that is being devlivere is coming with a 48 port switch and 24 port fibre switch. Could I change any of those ports into a router port and configure IP addresses on those?
The supervisor card is a ws-sup-720-3b the 48 port switch is a ws-x6748-ge-tx the 24 port fibre switch is ws-x6724-sfp
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Aug 13, 2012
I'm trying to enable port security on several 4507R's. When I try to configure a range of ports the switch will randomly put 1 or 2 in err-disable. It's different every time I apply the config to the same group of ports. However if I do them one at a time it seems to work. But I really don't want to configure 6 fully populated switches one port at a time. We also have a lot of 3750's and they gave me no problem using a port range. [code]
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