Cisco Switches :: ESXi Management Not Working With SG500 LAG

Jan 8, 2013

I am setting up a 3 host ESXi cluster. I am using a pair of stacked SG500-28 switches for switching redundancy. Each host has 8 NICs. 4 to each switch. I have successfully setup a 3 NIC LAG with 1 path to one switch and 2 paths to the other. These LAGs work. When I setup a 2NIC LAG via the console for management, and the associated ports on the switches, I lose managment communication with the host. Before setting up the LAG in the ESXi console, I set that vswitch properties to us IPHASH as instructed here bit.ly/VLaTEt I have attempted to follow those instructions as closely as possible. The one thing that I am wondering is whether the SG series supports etherchannel. I can't find any reference. Either way, it works on the other vswitch that is for vMotion. I can vmkping between the hosts over that LAG. But setting up a LAG on the management vSwitch doesn't?

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Cisco Switches :: SG500 Stacked Switches Getting Errors?

Dec 16, 2012

We have 3 SG500-52 switches that are stacked and configured for layer 3 that replaced a couple of SG2010 switches a month ago. Switch units 1 and 2 are for servers and unit 3 for the workstations. The switches are connected with stacking SFP+ copper cables, 1 1M and 2 7M cables. The problems are occurring between the workstations and servers resulting in slow traffic on some links and connection failures. A repeatable failure occurs doing a backup from a PC on unit 3 to a server on unit 1 and 2 (2 port LAG). Moving the workstation to a port on unit 1 results in successful backups every time.

Initially I was able to confirm packet loss between my PC (on unit 3) and the servers using ping (ping -f -c 100000 -s 1460) of about .1%. The iperf program in udp mode also showed some packet loss and in tcp mode showed slow connections. A week ago I then upgraded the switches from v1.2.0.97 to v1.2.7.76 and rebooted. After that the ping and iperf tests show no problems although there are still slow connections to samba shares and the backups still consistently fail.

I suspect there is a problem with the stacking connections and have searched for traffic statistics on the stacking ports to look for errors but have not found anything. Doing a snmpwalk didn't reveal anything that I recognized. There are interface counters for all the ports except the stacking ports.

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Cisco Switches :: SG500-28 Stackable Switches And NIC Teaming

Apr 17, 2012

Am looking into using stacking and NIC teaming to create redunancy for user access to servers. What I am thinking is getting 2 SG500-28 switchs and configuring them in a stack that appears as one logical switch. Now on the servers I would configure 2 NICs to be a team so they appear as 1 logical interface, perferably in an active/active configuration using LACP. In this NIC team take 1 team member to switch A and the other to switch B, so each team member is on seperate switches. 
 
Givent the scenario:
 
1) Will that work with the 500 series switchs? Reason for the switches is their price point is perfect for my client.

2) Besides the stack link will there also need to be a LAG between the switches or does the stack link do data traffic also?

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CIsco Switches :: SG300 Or SG500 That Has All Ports As SFP?

Feb 14, 2013

Is there an SG300 or SG500 that has all ports as SFP ports?

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Cisco Switches :: SG500-28 How To View Port G27 And G28 In GUI

Jan 31, 2013

how can i view the port G27 and G28 in GUI? As based on the GUI Adminstrator - > Port Management - > Port Setting i only can view from port G1 to G26. Or it will only appear when the port is active for stacking.

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Cisco Switches :: SG500-52P - Only 1 Host Per Port

Jan 15, 2013

 I have 3 x SG500-52P switches stacked. Vlan 1 is data and Vlan 3 is voice Port to Vlan membership is 1UP and 3T Port security is disabled
 
The issue I have is that I can have either a phone or a PC plugged into a port but not both. If  I plug in both then the phone works and the PC gets an IP address (Broadcast traffic) but PC cannot browse the network.

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Cisco Switches :: Difference Between SGE2000 And SG500-28?

May 10, 2012

What is the difference between a SGE2000 and a SG500-28?

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Cisco Switches :: Downloaded New Firmware For SG500

May 8, 2013

I have downloaded the new firmware for the SG500.   I see there are two files included in the download, a boot file (rfb) and regular firmware image (ros). I have looked and haven't seen anything about the rfb files. I know it is a boot file, but do not know if I should update the boot file first and then the firmware image or vice versa. Also, in my update screen on the SG500, the boot file option is greyed out.

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Cisco Switches :: Possible To Make Stack With 3 SG500-28

Jun 2, 2013

I wonder if i can make a stack with 3 SG500-28.

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Cisco Switches :: Stacking Requirements For SG500-52P

Jun 4, 2013

I have a Cisco SG500-52P along with an older SGE-2010P, am I correct that in order to stack they must be the same series?

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Cisco Switches :: SGE2010 Stacking Compatibility With SG500

May 29, 2013

I am currently running two SGE2010 in stack and planning to purchase new Sg500 .I have two questions :

1.  If these two different products can be managed as one stack.
2. Are the SFP (mini-GBIC) connections compatible and if so what accessories or parts do we need to enable them?

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Cisco Switches :: Setting SNTP Time For SG500?

Jan 13, 2013

I had connected a computer and NTP to the SG500. i had successfullly sync the internet time on the computer. but when i type 'show clock' on the terminal. The switch did not manage to sync the ntp time.
 
clock timezone sg +8
clock source sntp
sntp unicast client enable
sntp server 192.168.4.36

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Cisco Switches :: SG500-28P Does Not Handle NLB In Unicast Mode

Apr 8, 2013

We have a problem with NLB on a SG500-28P which is a major issue for us.
 
I am investigating a problem together with Microsoft Support about a download/upload performance issue with a Microsoft Forefront TMG array which is connected to a single SG300-28P. Àpparently this issue exist on every NLB array we implement. I am now at the point we asume the SG500-28P does not handle NLB in unicast mode very well.
 
We have a network topology as shown below:Please note the actual public IP Addresses are hidden and the internal IP Addresses are diffrent, for security reasons.
 
Our SG500-28P is configure in L3 mode. It hosts three subnets you see above. The two TMG servers are configured with NLB (in unicast mode) on the Internal Network and External Network interface. It is connected to the internet and our internal network. These TMG Servers are in fact Edge Servers. Our other servers and client are in a different VLAN. The default gateway flows through this NLB Cluster [10.250.0.254].
 
Problem: When a client uses its default to connect to the internet the performance is very and very slow. With an internet connection of 10/10 we get 10/2. With an internet connection 100/100 we only get 7/1!.
 
Now we have tried everyting we can imagine. I can't write down all, because that would be a lot. One thing is worth notice; When we move the client to the same VLAN as the NLB Cluster and the client uses 10.250.0.1 as its default gateway, the problem still exists. But... when the client uses 10.250.0.254 as its default gateway the performance is outstanding 95/95! Apparently if traffic for the NLB Cluster is routed through the SG300-28P the performance drops like a rock.
 
I have never seen this before with SG300 series switches, although this environment is different. Normally I would configure NLB in multicast mode. But the switch does not allow to add static ARP entries for multicast MAC Addresses.I know NLB in unicast mode introduces switch flooding and such. But why does the SG500 not handle this right? Is there anything I can do about it?

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Cisco WAN :: SG500-24 - Switches Between Cable Modem And Router?

Feb 25, 2013

Currently, my Cisco DPC3010 cable modem is connected directly to one of the Ethernet ports on my Linux router.  All works quite well that way.  However, I'm curious to know if there's some what to separate the router and cable modem over 2 switches?
 
The coax enters the house in my living room and connects to the CM there.  The router is also sitting in the living room, and it's connected to a Cisco SG200-18 switch.  I have Ethernet running from my living room to my basement, where a Cisco SG500-24 switch sits.  The two switches are connected via a 2xGigE port channel.
 
I want to move the router into the basement.  Ideally, I'd like to move the CM down there with it, but I don't have the necessary coax run.  So for now, that's out.  But... can I go from something like this:
 
--coax----- Cable Modem ---GigE----- Router ---GigE---- SG200-18 ===2xGigE==== SG500-24
 
To something like this:
 
--coax----- Cable Modem ---GigE-----  SG200-18 ===2xGigE==== SG500-24 ---GigE----- Router
 
I tried it, complete with a separate VLAN specifically for the CM traffic.  And the VLAN was properly trunked between the two switches.   But for some reason, the router was unable to communicate via IP to the upstream.  I'm not sure if there are config bits I need to set on the SG200 that the CM is connected to?  I thought I'd read somewhere that CMs don't like broadcast technology such as LLDP and/or CDP, so I disabled both of those on its port.  Did I miss something else perhaps?  Or am I trying to do the impossible?
 
For what it's worth: the IP connectivity is static.  There's no DHCP running between my router and the upstream cable provider.  The cable modem is literally acting as a L2 coax-->Ethernet convertor, more or less.

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Cisco Switches :: SG500 Possibility To Bind ACL To A Virtual Interface

Mar 24, 2013

I have a switch from SG 500 Series the works as Layer 3 Routing Switch with the Firmeware 1.2.7.76. I have create some diferent VLAN´s and have defined one ACL for each VLAN. Now i try to do a binding from the ACl to a VLAN but i have only the option to bind the ACL to a phys. Interface or  a LAG.is the a possibility to bind the ACL to a virtual interface like in other Cisco serieses and how it works ? the Backround is i have connectetd 2 Hyper-V Server where the Guests are in different VLAN´s and the server is connectetd with a 10Gb Trunk to the Switch now the switch routed the different VLAN´s and i must have some restrictions between the VLAN´s.

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Cisco Switches :: SG500-28P Slow Switch Uplink Connectivity

Feb 26, 2013

At our office we have a weird performance problem with the following switches and connectivity:
 
Internet     |
SG300-24 (L3) core switch     (in our server room)
|SG300-10P (L2) access swtich     (in our meeting room)     |
SG500-28P (L3) switch     (in our meeting room)
 
We are building a new computer infrastructure that is connected to the the SG500-28P. As you can see above the SG500-28P in our meeting room has an uplink to the SG300-10P in the same meeting room. And again the SG300-10P has and uplink to the SG300-24 in our server room. From the server room, there is connectivity to internet. The network uses a multiple VLAN's and routeing between them. Bootom line is, the internet VLAN ID 10 is tagged to trunk ports and available on the SG500-28P. So client get connected straight into the internet based VLAN.
 
The performance on the SG500-28P switch itself from VLAN to VLAN is very fast. But... the uplink connection tot the internet and other VLAN's on the core switch are very and very slow! At least 10 times slower than normal. So if I plug a laptop in the SG500-28P and go from uplink to uplink, it is slow! But... when I connect the same laptop to the SG300-10P the connection with only one uplink it is fast. As if three switches is to much. I can't figure out why.

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Cisco Switches :: From SG500 Port Appears Up But At SG200 It Is Disabled

Jan 4, 2013

I have an SG-200-8 which connects to a stacked pair of SG500-28P switches. It is powered by PoE from the SG500. From the SG500 the port appears Up, but at the the SG200 it is disabled and nothing I do re-enables it. I know the cable is good because I had a previous netgear switch hanging off it and working, also the power gets through.I can only connect to the switch if I disable wifi and plugin a manually configured PC - DHCP doesn't get through to it from the SG500 end.I have tried a second SG200 same problem. Have disabled RSTP/ STP thinking it might to relate to the fact that a PC connected to the switch also had a wifi connection to the same LAN, but. Don't know where to go next. looks like a bug?

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Cisco Switches :: Switch Inaccessible When Create IP Interface On SG500-28P

Feb 3, 2013

I have a brand new SG500-28P sitting on my desk.
 
The swtich is configured and going to operate in L3 mode. All ports are still assigned to the default VLAN ID 1. I have created several new VLAN's. Once I configure and aplly an IP Interface to a certain VLAN the swtich becomes inaccessable right away. I am pretty sure I am not pulling my own VLAN under my connection. Every port is inaccessable. I have to pull the power plug and restart the swtich with its saved configuration. Even when I add another IP interface to the default VLAN 1, same issue. I have tried lot's of things, but can't get it to work properly. I have just upgraded to the latest firmware.
 
I have configured dozens of SG300 swtiches which is very easy. This one does not work with me.

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Cisco Switches :: SG500 - Migrate From Default VLAN1 To Different VLAN

Mar 1, 2013

I have an SG500 that is already deployed with some Access VLANs on it. The PVID is still the default 1. I am trying to change it to 19 with as little interruption as possible. If I just go to the VLAN Management Tab and change the Default VLAN to 19 and reboot the switch, will it migrate my management IP to the default VLAN without any trouble? Would it be less interruption to: Create VLAN 19, assign it an out of subnet IP address, change a port to PVID 19, connect directly to that port, go to that IP address, remove the original management IP from PVID1, change all the ports to PVID19 then change the management IP back to the original?

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Cisco Switches :: Possible To Configure A Cross Stack Ether-channel Between 2 SG500

Jan 17, 2013

Is it possible to configure a cross stack etherchannel between 2 SG500 (in stack) and 1 SG200/SG300?

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Cisco Switches :: Main Differences Between SG500 And Catalyst 3750 Command Set

Feb 3, 2013

Could you provide me the main differences between SG500 and Catalyst 3750 command set?

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Cisco Switches :: SG500-28P SNMP Query For Individual Port Power Output?

Aug 26, 2012

Is there a way to ask the above switch how much power it's supplying to various ports?I've found some stuff in POWER-ETHERNET-MIB, but it's only the main power supply and the up/down status of the various ports.
 
It looks like what I want is

[URL]

but my SG500 tells me:

snmpwalk -v2c -cpublic serverswitch  1.3.6.1.4.1.9.9.402
CISCO-SMI::ciscoMgmt.402 = No Such Object available on this agent at this OID

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Cisco Switches :: SG500 DHCP Server Does Not Assign Predefined Static IP Addresses

May 17, 2013

I upgraded my SG500 switch firmware to 1.3.0.59, since there is a new functionality DHCP server v.4 well I must say I came accross the issue I cannot solve. DHCP server assign dynamic address - no hassles. troubles start with static IP hosts.I defined a couple of hosts with static address within the correct subnet. I tried with hardware address and client identifiers. no luck. my switch does not assign the IP address I assigned to the suitable mac address. to define it I use both CLI & Web.

ip dhcp pool host HP-Elliteaddress 10.10.11.7 255.255.255.0 client-identifier 01:d8:d3:85:cf:09:72client-name HP-Ellitedefault-router 10.10.11.1exit
ip dhcp pool host VAIO-Zaddress 10.10.14.108 255.255.255.0 hardware-address 54:53:ed:1c:a1:46
default-router 10.10.14.1exit

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Cisco Switches :: SG500 LACP Trunk Mismatch Native Vlan On Individual Ports

Jan 22, 2013

I have just configured up a sg500 with a lacp trunk to an upstream switch.
 
I am getting native vlan mismatch on the individual ports of the lacp team.
 
24-Jan-2013 12:54:48 %CDP-W-NATIVE_VLAN_MISMATCH: Native VLAN mismatch detected on interface gi1/1/24.
24-Jan-2013 12:57:35 %CDP-W-NATIVE_VLAN_MISMATCH: Native VLAN mismatch detected on interface gi1/1/48.

[Code].....

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Cisco Switches :: VLAN Management Via SNMP On SG300-10 Switches

Aug 7, 2011

Any snmpset commands to add, modify and delete vlan table entries on SG300-10 switches? I checked url... however this information is apparently only valid for catalysts. The latest firmware is installed and the provided MIB files are used.

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Cisco :: Configuration Management In LMS 4.1 Is Not Working?

Jan 9, 2013

I need to archive the configuration for the devices but it states that SSH fails to authenticate although I have checked the credentials many times.

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Cisco Routers :: RVS4000 Bandwidth Management Not Working

Oct 12, 2011

I have a RVS4000 hardware v2 with firmware 2.0.2.7. I have a DSL modem in bridge mode and have the router set to PPPoE. Everything works fine except I want to use QOS which doesn't work fine. I have some vonage boxes set up on a switch set to port 1 trust mode is set to port and level 4 for highest priority. Port 2 I have on another switch set to priority 3. I tried turning bandwidth mangement on which doesn't seem to work at all so I don't even know if they QOS is even working. I set the max down stream and upstream provided after running a number of speed tests and setting it a little lower than my worst speed results. Once I did that I set up a rule for all traffic for rate control and set them just below the min and max I put in for isp bandwidth. I set the ip range from 192.168.1.100-190 this will cover anything that dhcp hands out and I also have a few statics set up on 192.168.1.180 and 181. However after enabling it I ran some speed tests and I still get full speed and the rules seem to be getting ignored.

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Cisco :: 5510 Bandwidth Management / Policy Not Working

Jul 27, 2011

We have a Service Policy rule setup on our 5510 for SMTP traffic.
 
Problem is, this week someone sent a larger email 20+mb to dozens of recipeints and the outside interface was hitting 10mb, which is not what I would have expected with this rule in place, so I'm questioning the configuration. We know it was email because I disabled the server that receices our outbound mail to apply a signature and the traffic dropped immediately.

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D-Link DIR-655 :: Remote Management Not Working In Some Cases

Mar 1, 2011

I can access the admin pages from inside the network.I can access the admin pages remotely from my iphone (safari).If I try and access them from my PC at work (IE6 or Google Chrome), I can access the router, give the password and get the status screen. But if I try and go to any other page on the router, it asks for the password again and takes me back to the status screen.I have Hardware B1 and firmware 2.0 (not upgraded it yet).

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Cisco :: 6500 IOS Switches - Compliance Management In LMS 3.2?

Oct 11, 2011

I'm having a hard time getting Compliance Manager to accept a "banner login" command I'm attempting to use on 6500 IOS switches. I've edited the template, tried cut-&-paste, looked for the archive file on the server to directly modify it (without success), among other things. I have this feature functioning correctly on CatOS switches, but can't seem to get it properly set on IOS switches. What's the limit, as far as the template is concerned, on the number of characters with this type of command? Where are the archive configs located on the server; in the "shadow" directory?

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Cisco Switches :: SF-300 - Change Web Management Port (from 80)?

Nov 29, 2011

I just purchased 2 SF-300 48 port units for 2 customers.  I want to be able to remotely manage them over the Internet with my browser.  BUT, customer sites already use port 80 for web servers.  So, how do I configure this switch to use some other port than 80?
 
I called support, and much to my surprise he said it cannot be changed.  How bizarre that a device with many hundreds of configuration settings does not have one of the most basic settings...
 
At one customer site I can configure port forwarding and translation to get around this problem, but the other site's router does not offer port translation..

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Cisco :: LMS Prime 4.1 Setup On ESXi 5?

Jan 4, 2012

Is there any roadmap regarding the LMS virtual appliance to be supported on ESXi 5?

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Cisco :: Catalyst 2960G / Get SNMP Management Working Over IPv6?

Jul 20, 2011

I recently picked up a Catalyst 2960G and am trying to get SNMP management working over IPv6.  I have the IP Address set to the local link, and can successfully ping and telnet to the switch (so the network can get traffic to and from the switch).  However, SNMP packets just seem to disappear.  I am running WireShark on my machine, and I see the packets go out to the proper IP, but nothing comes back.  When I check "sho ipv6 traffic", I can see where there are UDP packets that are received, but, again, none going out.  Also, when I run "sho snmp", all of the packet counts are 0.
 
Here are some relavant snipets from my "sho run":

interface Vlan1
no ip address
no ip route-cache
ipv6 enable

[code]....

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