Port mirroring limit of 8 ports on SGE2010P
Hello Guys,
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.
PLease advice.
Thanks.
Hi Alexander
Your understanding is correct.
For my own curiosity, I guess you are also doing call recording, can i ask the question why so many mirrored ports?
regards Dave
Similar Messages
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Port mirroring limit on SGE2010?
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. Does anyone have any factual data to confirm or refute this claim?
Thanks in advance for any information you can provide.Hi Gumby, it is correct, there is a limit up to 8. However, as you note, the documentation is scant, in fact the data sheet and admin guide does not say it.
A long time ago, we had a very controversial case, we had a customer very upset because he had an old SRW2048 switch. The old SRW did allow for ALL ports to be used for a SPAN. However, his switch died due to old age and he was given a SG300 switch. The SG300 supports up to 8 for the SPAN as well.
When the customer discovered this, he was quite unhappy... So I did an investigation to find out if any of our switches would behave like the old end of life/ end of sale switch in this regards. The answer was no, including for the SGE/SFE series models.
However, you can also monitor entire VLANs. So it shouldn't be too much of a problem to cover almost as much traffic as you desire.
-Tom
Please rate helpful posts -
Hello,
Does anybody know the specifications about port mirroring funcionality for Cisco SRW2048 48-Port Gigabit Switch?
I need to know about:
1.- Is there any limit in port mirroring sessions?
2.- Can one target port receive traffic from multiple ports?Hi Dave,
Thanks for your answer, of course I understand I can't have 4 Gbps out of the egress port, bust sometimes we know that even when the link is 1 Gbps the traffic is not going to fill that bandwidht.
Regarding the sessions question, I understand by your response you can have:
Source Port Type Target port
g1 Rxonly g3
g2 Rxonly g3
g4 Rxonly g6
g5 Both g6
Can you confirm this?
We are evaluating to propose this switch to a customer and we need to have this feature.
If there isn't any limitation in mirroring traffic, except logical bandwith capabilities, then I can't understand why Catalyst 2960 have a limitation to one or two monitor sessions ... The catalyst are suposed to be better switches ......
Best Regards -
SGE2000P 24 ports - Port Mirroring limitation
Hi everybody,
I need to setup port mirroring on several ports on a SGE2000P 24 port switch.
I easily managed to setup 1 session (1 target port) listening to 8 ports (source ports) but it seems like I can't add any more port.
Line No.
Error Type
Value
Diagnostic
1
Unknown value
Too many monitoring sessions..
I went through the switch documentation and I could not find any information regarding limitations on the number of mirrored ports.
Is anyone aware and can confirm this limit?
If this is the case, is it possible to setup more than one session (target port)?
Thank you,
RobertoThese switches only support 1 session only with 8 source ports to 1 destination port.
Best Regards, -
I have a late 2011 model MacBook Pro running Mountain Lion. I love the AirPlay mirroring feature with Apple TV...BUT, how do I mirror with TVs that don't have Apple TV? I used to run a cable from my mini display port to the HDMI input of a TV. This feature seems to be lost in the Mountain Lion upgrade. Did Apple feel that once Mountain Lion came out that EVERYONE would have Apple TV? There are no settings in System Preferences/Display like there used to be...only for AirPlay Mirroring.
Running a cable to the HDMI port is still supported. (and still works on mine).
If the Arrangement tab in System Preferences > Displays isn't present then it doesn't recognize the physical connection. Double check all cables. If that doesn't work try a PRAM reset:
http://support.apple.com/kb/ht1379 -
HI, I am trying to connect my macbook pro, 18 months old, to a projector using the mini display port and a cable/connector to a VGA port on the back of the projector. It all fits but the there is nothing happening? no mirroring option. Any ideas appreciated. Many thanks
to get to the Detect Displays button you have to hold down the Option key and the button appears.
SeanfromFulham wrote:
Many thanks, however I don't seem to have any relevant options under displays. -
WRT54G: How do I limit access to specific ports, only to local IP's
Using a WRT54G with Windows XP, and I've setup a web server that I'm still testing. Until I understand the security better, I want to limit access from outside IP's to the port that it's running on, but NOT limit access from the outside to services running on other ports. Is there a way to block a range of IP addresses (or conversely, only permit access for a limited range of IP addresses) to a specific port? So for example (assuming server's on Port 99, and IP address to the outside world is 99.99.99.99: Port 99: Blocked IP Range: 0.0.0.0-99.99.99.98, and 99.99.99.100-255.255.255.255 - OR Port 99: Allowed IP Range: 99.99.99.99 Alternatively, I would be interested to permit access to the web server port, only for certain MAC addresses. Is this pretty secure, and if so, how can this be done? I've poked around the router settings and spent a good deal of time researching this; any help would be greatly appreciated...
Why do you want to block IP addresses: "IP Range: 0.0.0.0-99.99.99.98, and 99.99.99.100-255.255.255.255" ? This is everybody on the web, except your router! If you really want to block all these people, just unplug your router from your Internet connection. That is a block that cannot be hacked!
Normally a server is assigned a fixed LAN IP address. This address must be outside the DHCP server range of your router, and it cannot end in 0, 1, or 255.
Next you forward a port (for example, 99) to the server's fixed LAN IP address.
Data arriving at the Internet port of your WRT54G for port 99 will then be forwarded to your server. If you have other Internet services (i.e. server B) running on port 1297, then data that arrives at the Internet port of your WRT54G for port 1297 will be directed to server B. Assuming that you only have port 99 and port 1297 open, then any other unrequested data (for any other port) that arrives at the Internet port of your WRT54G will simply be ignored (and thereby blocked). If you connect another computer to a LAN port of the WRT54G, connect to the Internet, and request data, then when that data arrives at the Internet port of the WRT54G, it will be allowed to pass, and it will be routed to your computer.
In summary, by default, all router ports are closed. The only way to get data through the router is either to open a port (using port forwarding, or alternatively, the UPnP function), or for someone (or some program) on the LAN to request data from the web.
The router cannot limit the use of a port by MAC address. When you open a port on your router, you are opening your server to invasion from anyone on the Internet. So, your server must be setup to protect itself. Rather than limiting server use by MAC address (which can be faked), your server should be setup to require a user name and password. -
Have been using the Mac Pro since 2008. Changed to a Radeon 4870 card early this year. Everything was fine.
Running an old KDS monitor from minidisplay port to VGA and a 1400x1050 projector from DVI out. Have used the
two mirrored the entire time with no trouble.
The old kDS monitor looked like it was starting to go bad so I got another monitor. Don't have much room
so it's a 14inchwith widescreen 1328x768 display. Hooked that to minidisplay port as it only has a VGA input.
Immediately the LCD display took over and restricted the output to the projector.
If I turn off mirroring, I can get projector back to normal. But this makes running programs a lot more difficult.
It worked fine with mirroring on before the monitor change. Except going back to old monitor,
now it is affecting things. I pull up display preferences. If the displays are mirrored, even setting the projector
to 1400x1050, it says "usuable resolution 1280x1024." It didn't use to do this at all.
Tried reseting NVRAM - no result.
Any suggestions would be helpful. Just looking at the image on the projector, I don't see any difference from
before.UPDATE:
As noted in the first post, both of these newer USB DAC work fine at 24/96 on my wife's iMac, so it's clear that they didn't both become defective when I connected them to the Macbook Pro at the same time.
Resetting the Macbook Pro PRAM didn't help, so I removed the hard shell laptop case to get to the battery and remove it, then reset the SMC. After that I could use the original DAC at 24/96 again, but only IF it was plugged into the rear USB port. If I plugged it into the front USB port then the sound was garbled and filled with noise. This was a vast improvement over no sound at all.
Then I switched to the replacement/updated DAC, but I got no sound at all from either USB port at any bit-rate. And returning to the original DAC again now results in no sound again.
Sigh... I will reset the PRAM and SMC again, and see how far I can get with this. I'd still love some help. Thanks! -
Is it possible to mirror the display on the Macbook pro which is two years old to my iMac which is four years old? Macbook pro is running OS X Lion 10.7.5 and the iMac is running OS X 10.6.8 (10K549). Neither of them have Thunderbolt ports.
OK, well I would go with what Apple says in writing but if you want to take a trip to visit the Genius Bar that won't hurt.
Good luck, I'm 99% certain you will find I was correct but please let us know.
BTW when posting please click the Reply link in the post you are replying to, otherwise we can't tell who y our comunication is directed to. -
MacBook Pro (9,2) Thunderbolt Port does not project mirror image correctly
Scenario:
Using an Apple Mini Display Port to VGA adapter
MacBook Pro (9,2)
Thunderbolt port
Various projectors
Epson 450w
Epson 460
Epson PowerLite 45+
Using Mirroring setting in Display preferences.
Symptoms:
Inserting the Apple Mini Display Port to VGA Adapter (with the projector cable attached) into the Thunderbolt port causes a black scrambled image screen. Switching resoutions does not resolve the issue. One resolution setting came close to being viewable, but multiple images of desktop were seen.
Resolution (for me and maybe you):
Attempted multiple Thunderbolt software updates and FW updates, no success (http://support.apple.com/kb/HT5219). Successful: Prior to startup, insert Apple Mini Display Port to VGA Adapter (with the projector cable attached) into the Thunderbolt port, do a PRAM reset, adjust resolutions to your preference. Should work. Only tested with Apple branded Mini Display Port to VGA Adapter.The solution worked.
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Duplicate IP address using Mirrored switch ports
Hi All,
Here's a good one. We use Websence and have an agent installed on one of our T1 Netras in a routed subnet. To collect info from all the traffic in that subnet we mirrored the uplink port to the gateway. Thus all traffic on that port is mirrored to the Solaris 10 box. Shortly after mirroring we started receiving duplicate ip address errors.
Hardware address '00:03:XX:XX:XX:XX' trying to be our address XXX.XXX.XXX.XXX.
With further investigation we discovered that when we ping a host that exists no error is generated. Pinging an ip that is not there produces the errors!
It seems that an ARP request that is not answered is being bounced back through the mirrored port. When the box sees this it thinks that another box is trying to send out the ARP broadcast.
With valid IP with snoop:
SUN01 -> 192.XXX.XXX.4 ICMP Echo request (ID: 615 Sequence number: 0)
192.XXX.XXX.4 -> (broadcast) ARP C Who is 192.XXX.XXX.10, SUN01 ?
SUN01 -> 192.XXX.XXX.4 ARP R 192.XXX.XXX.10, SUN01 is 0:3:ba:27:2e:9d
192.XXX.XXX.4 -> SUN01 ICMP Echo reply (ID: 615 Sequence number: 0)
With invalid IP with snoop:
SUN01 -> (broadcast) ARP C Who is 192.XXX.XXX.2, 192.XXX.XXX.2 ?
SUN01 -> (broadcast) ARP C Who is 192.XXX.XXX.2, 192.XXX.XXX.2 ?
No i didn't copy and paste it twice!! :p
Since nothing responds the box assumes that the message came from someone else. Its like talking into a mirror thinking that the reflection is speaking for you so you stop and complain that his lips moved!!
When looking at the arp table we found only a hand full of entries. Since there are around a 10 nodes we should see more. We removed the publish flag for the host and the duplicate IP problem goes away. Fixed, sorta. when all the arp caches clear we might run into the issue of not being able to communicate with it.
The cache on the box quickly filled up with arp entries. Another note, we use this box as a DHCP/BootP relay. Not sure if this will be affected.
I guess a possible workaround would be to set up an ARP proxy for this box , but not sure it will still report that there is another box with the same IP on the network.
Any Help with this is appreciated.
thank youSorry been on vacation the last couple of weeks...
I created this little script to fix the problem
root@srelay01:/etc/rc2.d> more S05arpset
#!/bin/sh
arp -s srelay01 00:03:ba:27:2e:9d
if you find that you need to broadcast try using the -p switch with it on another box. The problem is gone and the system interacts on the network fine. I would still love to know why this happens.
Good luck! -
Trouble With Port Mirroring (SG200-08)
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Even though both Tx and Rx is specified, only getting half the conversation. Ping reply only for instance. And when pinging from other locations no traffic at all.
Please help
SG200-008
FW Version: 1.0.2.0
Boot Version D.3.1
ThanksI also have problem with the mirroring of port on my SG200-08. The firmware is 1.0.6.2.
I mirror the port g1, to which my router to the Internet is connected, to the port g2 to be able to see the traffic with a Centos system running Bandwidthd connected to the port g2. The problem is that I only see the traffic coming in (downloads from the Internet) and not the traffic comming out (uploads to the Internet).
When looking at the SG 200-08 on the web interface at "Status and Statistics/Interface" and looking at the port g2, I see values for the "Transmit Statistics", but all the values are at 0 for the "Received Statisticsc" (see the attached file)
I confirmed that in "Administration/Diagnostic/Port Mirroring" is set up both Tx and Rx (it does not work either if I have Tx or Rx alone: I do not see the uploda traffic to the Internet). See the attached file.
This is very annoying as I purchased this SG 200-08 especially for this and it does not do the job porperly.
Does anybody knows a solution to this? -
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