Cisco Switches :: NetFlow And Bandwidth Monitoring On SGE2000
Nov 21, 2011
Does the SGE2000 supports NetFlow? I've checked the Cisco docs and also called Cisco support to which no one has been able to answer me.
Anyhow, just in case it doesn't support NetFlow, how to be able to set up something that would be able to check the bandwidth usage on each port?
I've got a problem where I think the SGE2000 switch is failing when I pump around 190~200Mbps through x2 of the ports (Server A on port 1=130Mbps and Server B on port 2=60Mbps) of Multicast traffic (UDP). I can measure the output from the Streaming servers that provide the multicast content, thats how I know the input to the switch and I know that there are no packets lost or any errors departing from the servers, yet when I increase server B to say 80Mbps, I get break up and all sorts of problems on the client end STBs and it is happening on the multicast content provided by Server A too which is a different source, so I'm 99.9% sure its a SGE2000 switch problem which is why I'd like to monitor it somehow.
I have a question regarding netflow and NAT. I have read some documentation (on ASR1000) regarding monitoring NAT process on Cisco ASR1000 that can be done using netflow version 9 (the term was called netflow event logging a.k.a NEL). The problem is, I have not found the netflow collector that can do that. I have queried several software such as manage engine "Netflow Analyzer" and Lancope, but they said their software can not do that.
I would like to run some NetFlow monitoring on a few sub interfaces on a router. This is a 7301, with an NPE-G1.What I want to know is, does Cisco have a page anywhere (because I can't find one) that lists typical additional CPU and memory loads one can expect when enabling NetFlow on an (sub)-interface; perhaps for a given speed (Mbps) and/or number of flows?I don't want to enable NetFlow and then bring the device to a grinding halt, how can I know what sort of overhead to expect?
I have a Campus LAN setup which is layed out using Cisco SRW2024 and SGE2000 SB switches. On the LAN we are running various services. These are CCTV, VOIP(SIP), Public Address(multicasting) and Internet hotspots to various locations. I have attached a layout of the setup. A unique VLAN is setup for each of these services.The problem we have is that the PA audio is breaking up at intervals making the output distorted this is also happening for the SIP phones within the facility. Using the user guide we have tried to setup QoS on the system but we seem not to improve the services.
I'm having trouble getting a stack of three sge2000 switches to connect together and NOT reboot.Two of the switches are older Linksys sge2000s and they stack well together, but as soon as i connect the new Cisco sge2000, it will make them both reboot sequentially, even though it detects that it needs to be #3 in the stack.SW 1 port 24 is connected to SW 2 port 12 and they function correctly (both of the linksys switches). The documentation states they should be connected in a ring topology so I first tried completing the loop with SW3 (the newer cisco sge2000). When that had the aforementioned troubles I just connected SW2 port 24 to SW3 port 12. Still forcing the switches to reboot.I SUSPECT it may be a firmware/software issue, but I wanted to check if they'ed even work together.
I was wondering if there is a way to monitor the total bandwidth available at any given time? My ISP claims and is charging me for a certain amount of bandwidth but I suspect that during the day I am getting much less.
I would like to track available bandwidth continuously (or every 5, 10, 15 minutes) and log that data so I can show them the results. I'm on a Mac 10.7 but can use Windows XP also.
I have a Cisco 1184 with Hwic 1-t (IOS 12.4(15)T12 ). i want monitoring average load of my HDSL. How to can i monitoring my bandwith in upload and in download for WAN interface ?
I'm working with two Catalyst 2960 switches and I would like to know if there is a way to monitor bandwidth on individual ports. Ideally I would like to have one graph showing a bandwidth usage reading on each port. I tried using the Network Assistant to accomplish this, but I was only able to view one port at a time. I also tried using a traffic graphing program from Paessler, but a MIB file is needed to allow the program to connect to the switch. When I ran a search on the network management page the 2960 was not on the list for MIB supported products. Is this type of graph possible to do?
I'm trying to get a network of SGE2000 switches mapped into Cisco network assistant.It always comes back with the device type unknown and status unsupported device.Is there a way to fix this ? I'm using Cisco network assistant ver.5.7(6)
configure a secondary ip address (over the same address range) in a vlan interface on the SGE2000?For example, I want Interface Vlan 10 on mw switch has 172.16.10.1/24 and 172.16.10.2/24. Is that possible? If I try I get an error message with a duplicate IP address error. On Catalyst switches it can be done, but on Small Business?
DHCP Relay on a SGE2000 switch.I have configured two VLANs on the switch, VLAN2 (192.168.10.x/24) and VLAN3 (192.168.9.x/24). I have the switch in Layer 3 mode. I have configured the DHCP relay server of 192.168.10.4 and the DHCP Interfaces as VLAN3. All of the IP Static Routes were generated by the switch.
If I put a client computer on a port that is Untagged VLAN 3 and try to get a DHCP address from the server on an Untagged VLAN 2 port I never get a response back.I have done some packet captures and here is what I have found:
I see the DHCP broadcast on the client computerI see the DHCP Request on the DHCP server coming from the IP assiged to the switch on VLAN 3 (192.168.9.254)I see the DHCP server respond with a DHCP OfferThe DHCP offer never gets to the client computer I can't seem to get a DHCP address to any system not on the same VLAN as the DHCP server. Option 82 is disable and I did try enabling it, which made no difference.
I´ve got a strange problem with the connectivity within a ring topology.There are five switches from the SGE2000 series and one SG200-50.The SG200-50 is the root bridge and RSTP is configured.From the root bridge switch (Switch 5) I can ping Switch 0.But I cannot ping Switch 0 from PC0.
On the other hand I am able to ping all other Switches (1-5) from PC0.In addition to that I can establish a RDP connection from PC0 to Server0.This tells me that there is no general problem with the connection from PC0 to the Switch0.
Right now when I want to configure Switch0 the only way is to connect to Server0 first.But we have to move Server0 and this is why I want to manage Switch0 from PC0 like any other Switch on that network.
We have a Cisco ASA 5520 supporting multiple VPNs - both remote-access and Lan-to-Lan. We would like to monitor the bandwidth utilization of the IPSec Lan-to-Lan tunnels.
We have a couple of cisco SGE switches connected to a single DELL, between the cisco switches we have a trunk interface. I'm not sure which setting should be configured on the switches to get it working because a loop is occuring.
I currently am using the SGE2000 switches for our datacentre and they have run great. We are looking at replacing them as part of our normal equipment refresh and have questions about what is the best switch for us. We are looking at upgrading to at least 48 port switches which isn't a huge issue.The main purposes of the switches will be for iSCSI traffic between Starwind SANs and Vsphere 5.1 hosts. We had some latency issues with one of the SGE2000s but otherwise they've been great.
We also will use these switches to handle our feeds from our ISP and our normal interserver communications. We have had DDoS attacks in the past of 40k packets per second and 600mbps and the SGE2000 never even flinched. We don't need it for any layer3 routing (which we use virtualized PFsense for). Looking at the Miercom report the SG200 series looks like it would be fine for us but I'm just worried around the part which mentions it becoame unresponsive in a DoS attack and also whther it may be slower for iSCSI. Both series seem to support flow control and jumbo frames.
I have a Linksys SGE2000 Switch and I've been trying to get Vlan's to work.How I'm trying to setup is like this
Port 1 - Vlan22 - Plugged into trusted port in firewall Port 3 - Vlan25 - Plugged into DMZ in firewall Port 15 - is plugged into a VMWare host. The network is setup as production is Vlan 22, DMZ is Vlan 25. Port 16 - Internal server so is Vlan 22
Both Vlans have a different IP subnet.I think I have port 3 configured ok as it's only one Vlan. I'm trying to get Port 15 configured properly and it won't work.Servers on VMWare hosts are Windows Server O/S.
I am using ASA 5510 Firewall and i have established VPN tunnels too , now i want to Monitor the bandwidth utilization , i have installed PRTG Monitor application and want to add the firewall , how to enable the SNMP in ASA .
I have a ea4500 router with 3 pc's, 4 iphones, 2 playstations, ipad, ps vita, house cat, and a printer all wired into the internet. There are four of us in the family all using the internet but I suspect one of us is using considerably more than the other. I live in the country and my current isp has us on the max available account - 50 gigs / month. Lately we have been hitting 45 in less than 3 weeks into the month. I would like to know which of the things connected or which person is using the most of the bandwidth up. Is there a program that doesn't require a phd in quantum physics and networking that can monitor this for me and spit out a report.
We have been set the task of securing a small managed office system which is currently set up with a standard switch allowing each of the offices (containing different companies) to see each other, and in some cases, access each others documents across the network.
Obviously this is a far from adequate set up and our aim is to isolate each office using VLAN's but share a common internet connection provided by the managed offices. We have two Cisco SGE2000-G5 layer 3 switches but we are new to Cisco equipment and VLAN's so we are not quite sure on how to implement this. DHCP would need to be provided by a Router, there is no Server. We are open to suggestions on the Router as we have yet to purchase one.
We've been trying to monitor the used bandwidth of our SGE2000 and SGE2010 switches with Nagios.We've been experimenting with the various OIDs and we've found the OIDs linked to the different switchports.
Though when we use SNMPWalk (to find the OIDs connected to the port) the names of the ports are all the same.
[code]....
Is there a way to change the names of these interface to unique names?We've already given unique names in the description field through the switch's GUI, but it doesn't make any difference for Nagios.
We lost connectivity to the web user interface - it no longer responds on the configured IP address.From the manual we see that by default the switch get its IP address via DHCP - but we find no record of any ip address assigned to this switch.Is there a IP address that this unit defaults to when DHCP is not available? Also - what is the best way to connect to the console using Windows 7?
The switch sge2000-g5 a small business switch, has a redundant power supply port built in the switch. It is a port that handles a 12v power supply. My problem is to find the exact device to supply the power to this port so I can have, obviously, a redundant power in my switch. This switch is actually out of production.
Any major difrrence between Netflow v/s Netflow-Lite?
I am trying to understand if Cisco 4948E can do the same job as Cisco 4500E or not and difference between Netflow v/s Netflow-Lite will work for me to select correct product.
I want to setup BB to monitor snmptraps with failure. The BB log shows can't connect to all switch ports 161, and I even can't telnet to XXX_17f 161 for example. My switches are Cisco C3550, C2950, ASA etc.
Mon Nov 7 15:43:03 2011 bbnet Can't connect to server XXX_17f on port 161 Mon Nov 7 15:43:03 2011 bbnet Can't connect to server XXX_9f on port 161 Mon Nov 7 15:43:03 2011 bbnet Can't connect to server XXX on port 161
I am a network engineer at a company with more than 300 Cisco switches to monitor and maintain. Any recommendation on a monitoring software providing details such as network topology and links?
I've just gotten a SG200-08 (SLM2008T-EU), which I would like to monitor remotely from Cacti using SNMP. It seems however, that this switch has no SNMP support - is this correct? Does this mean that there is no way to monitor traffic over the switch's ports short of making a script access the web UI?
