Cisco Switches :: 3750 / SMB Switch Integrations With Non-SMB Infrastructure?
Jul 27, 2011
A customer is expanding their network into another wing, and they have a good number of existing Small Business switches (specifically the SGE-2010P - [URL] that they're interested in possibly deploying. They have a full-blown Cisco infrastructure and voice deployment (Cat 6500 core switches, 3750 switch stacks, Communications Manager w/ over 1,000 phones, etc.).
The general concern is whether there is ANY known issues or concerns with trying to mix/integrate the Small Business equipment with non-SMB infrastructure. Looking at the datasheet for this switch, it's clearly PoE, supports QoS, although it doesn't specifically indicate it can provide a voice/auxiliary VLAN for a phone detected by CDP - that would be a big deal. So basically, "a switch is a switch", and I'm just posing this question to make sure there's no reason (technically or from a support standpoint) that we would not recommend integrating these.
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Apr 7, 2011
I have set up an ACL on my 3750 switch to deny icmp from PC A on our inside network to PC B on a different VLAN on our inside network using the following ACLs:
deny icmp host 10.1.17.15 host 10.3.10.4
deny icmp host 10.3.10.4 host 10.1.17.15
-- or --
deny icmp host 10.1.17.15 host 10.3.10.4 echo-replydeny icmp host 10.3.10.4 host 10.1.17.15 echo-reply
These ACLs belong to an access-list that also limits ip traffic to a few specific machines.When I try pinging from PC A I receive a reply message back from PC B. Shouldn't this configuration block any ICMP from PC A to PC B and from PC B to PC A? I would have expected the first ACL statement to block any packets associated with ICMP and when that didn't work I tried the second configuration.
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Aug 25, 2012
I have been experiencing a strange problem i have a switch stack of 3750 in which 4 switches are cascaded. there is one one switch shows PROVISIONED status when I run "show switch". i have verified the stack cable connectivity its OK.
now when i try to console that particular switch i am unable to access it as well. I tried to reboot that switch and on reboot it only shows one LED syst blink once and after that remains constant and nothing happens to other LEDS. from the back of the switch FAN is working fine.
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Jul 9, 2012
We are having a problem with our ACS and switch configuration.Basically if the switches lose connectivity to the ACS server the switches completely lock up, you can’t even console onto the switches.We want them to use the fall back username and password when this happens.
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May 4, 2011
Is it possible to trunk a SF300 switch with a 3750 switch? If so how? Whenever I turn trunking on the 3750 port I lose connection to the SF300.
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Apr 15, 2012
Actually i have problem with my connection and i would like to find that problem. i have 3 sites(1,2,3) connected together through fiber multi mode cable. The site 1 having the control room, the maximum distance between site (1 and 3) is 1.8 Km, the other distance(1 and 2) is 1.2 km and i already used 3750X switch and GIBIC GLC-FE 100Fx with support MM cable up to 2 KM.
i have in site (2 and 3) 10 cctv 3 mega pixel cameras and i check for the bandwidth is less than 100Mbps when i connected the 2 switches(2 and 3)to the switch in the site 1 there is a delay i thought maybe because of the bandwidth so i tried to connect only 1 camera but the same problem(delay). i did not make any configuration for the switches.
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Apr 18, 2010
Having trouble resetting the baud rate to 9600 on a 3750-E. Basically the device cannot be set to anything other than 115200 baud rate. I have changed this via startup-config (which lost connection) reconnected and saved config but after reload was back to 115200. Tried via bootloader to 'set 9600' but the termial program paused for a bit then the switch prompt returned. Tried the same to 'unset baud' but the same thing as above happened. I have erased and reloaded flash etc
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Oct 26, 2011
I've put a C3KX-NM-1G module into a 3750x but can only get ports 1,3 to stand up, ports 2 and 4 dont operate. ports 2,4 are not shutdown and dont come up with working SFPs etc in another switch.
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Jan 20, 2013
We have a data center with servers set up for different projects, some servers from partner companies and several small LANs. The traffic between all those needs to be controlled and firewalled. The servers and LANs are divided into different subnets and VLANs. Physically, their traffic is aggregated on a couple of 4506 and then sent to a FreeBSD server, where the logical gateways are set up and traffic is filtered between them.The BSD server is dying and having it there is incorrect in the first place, so we are planning to replace it with two ASA (5520) in failover.The question that arises is how to correctly implement firewalling between VLANs. Originally we thought to set up the firewalls in transparent mode and logically terminate VLANs on a stack of 3750 switches behind them, but would that filter the traffic between the VLANs? Then we thought to perhaps terminate the VLANs on the ASAs, use routing mode, and do filtering there, as well. Or should we implement multiple contexts? We have about 20 VLANs and all of them differ in rules of what should go there. None of this can be concidered an "inside" - trusted - zone, nor "outside". Internet and external links are connected and filtered in a different place.
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Nov 14, 2012
I have a 3750 stack as our core switch. On the core switch I have 2 VLANs. One VLAN is for WAN and one is for LAN. The WAN VLAN has our internet router, and the outside interfaces of two ASA's set up as failover. The LAN VLAN has everything else, including our MPLS router for the remote offices. Execs are cheap and want to increase internet bandwidth by purchasing a local home internet service like COX or Time Warner cable to add to our Business internet service with TelePacific which is a bonded T1 at 3 meg. Execs dont seem to care about SLA's and simply will not spend big dollars to increase the pipe. I was looking at those Mushroom Networks appliances but its too expensive for us also. Any way to add additional low cost bandwidth with out current setup? Maybe prefer to keep important internet traffic to the SLA circuit, and then put low priority traffic to the cheap non SLA cable modem if possible.
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Mar 29, 2011
I have a very basic networking question If I have, say, 3750's (or any L3 switch, capable of routing) at the edge and a 4500 at the core, where should I route? At the edge? At the Core? Both?
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Jul 8, 2012
I would like to limit the bandwidth available to a different target machine. I have been trying to do this on a Cisco 3750, but first I came across this message:
% QoS: policy-map with police action at parent level not supported ...
Then this:
% QoS: policy-map child ... ClassMap BackLimit only support MATCH-INPUT INTERFACE
Is there any documentation, I searched the forum but all I see are complex solutions, I just wanted to limit the bandwidth for a machine that is in a different site. I wanted to apply the policy on an interface SVI.
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Jan 26, 2012
actually i have problems with the connection between a Cisco 3750 and P750 server, the Cisco Gbic is X2-10G-SR and the card of the server is 10 Gigabit Ethernet-SR PCI Express Adapter, both uses 850 nm wavelength but i cant see link between the two cards, the physical connection is with a fiber cable with a conector SC in the server and LC (cable adapter) in the switch.
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Jul 10, 2011
We have the next Settings in our SW. We crate an ACL and aplied to a SVI for Incomming Traffic, I understand that is not necesasry to allow the returning traffic in ACL, but we can't access to rdp for example when we add the ACL, if we remove it, the acces is ok, buet when we add again the access is deny, even we have a log entry, and the ACL i just for Incomming traffic. There is no another ACL.
See attached file
[code]...
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Sep 28, 2011
Am not finding the resolution to my infrastucture and getting output drops. Sw1 is connected Sw2 as below stated
Please find the conf:
Sw 2 3750 conf:
interface GigabitEthernet1/0/46
no switchport
ip address 172.16.100.81 255.255.255.248(code )
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Feb 3, 2013
I need to recover the passwords for my 3750 stack (2 switches), I have the password recovery documentation but it seems to be referring to recovery for one switch. How do I go about recovery when in a stack, should I remove the links on the switches and recover each one separately?Alternatively can I do a factory reset on them
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Nov 18, 2011
If I have two stackable switches one switch uplinks to one 6509 core switch and the other connection uplinks to another 6509 core switch, and also the other stackable switch does not connect to the core switches. Because I am using hsrp and also we are not using vss then one uplink to the core is not in used only ones is so then how does creating an etherchannel between does two uplinks to both core switches benefit me in anyway such as more bandwith and using both uplinks at the same time or I'm I wrong?
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Nov 14, 2011
If I have two stackable switches were only one stackable switch has two uplinks one uplink goes to one core 6509 switch and the other uplink goes to the other 6509 core switch can a Layer 3 etherchannel be used if each uplink go to a different core switch, by the way hsrp is running between both switches and also can you give an example how data will be routed from the stackable switch through the ethernetchannel to one of the core switch accross the WAN to another core switch?
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Nov 2, 2011
i have an issue to connect a trunk between cisco switch and extreme switch i have many vlans that i want to cross via a link between cisco 3750 switch and a Extreme Alpine 3800 switch
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Nov 18, 2012
I have two 3750-X configured to be a stack and I am planning to re-rack these somewhere else. What I would like to know is what are the effects of having the master switch itself lose power? Does it immediately just make the member take over master (there should be no election since there are only 2 switches??) and there would be no loss of connectivity?
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Nov 30, 2011
im searching a list wich can show me all the cisco routers and witches that support USB. (axample : a 1812 router)
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Dec 7, 2011
I have a etherchannel defined between 2 L2 switches using LACP as shown below. The etherchannel works fine, however when I hard code speed/duplex on both ends the etherchannel fails. What is causing this behaviour?
SW02:
interface Port-channel5
interface GigabitEthernet1/0/1
switchport mode trunk
[Code]....
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Dec 5, 2012
We just got many 3560x switches for a project. Curiously and in a very rate event (at least for me ) 4 of them died after workijg normally. 3 for some days and the last one for 3 weeks.Power supplies are ok and light up, they work on other switches, fans dont start kn the damagdd switch but work in ither switches.Syslog server doesnt show anything. It just goes puff. They are brand new switches biught one month ago from official channek distributor.
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May 24, 2006
I am trying to implement IP SLA. Can I implement it on layer2 switches?
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Jan 10, 2012
Symptoms: The switch hangs - after a hard reboot and after two hours switch No. 2 flew out from the stack. After the reboot, everything returned to normal and now when a few days passed switch works without problems. Devices: WS-C3750X-24T-S
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May 23, 2011
I am trying to buy a GLC-SX-MM SFP module via Fed Stock, and I keep getting a GLX-SX-MM. What is the difference between these two part numbers? I can't find it on the Cisco Web site and eve a search of Google comes up relatively fruitless! Is the GLX compatible with my 3750G-24PS switch?
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Oct 3, 2012
Right Now we are using Cisco switch model c4006.and we are looking to replacement for the same . Below are our requirements.
1: Around 120 Ports (100 Mbps)
2: Around 30 Ports (1Giga)
3: Layer2/Layer3
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Oct 6, 2012
I have 2 cat3524xl's and a 3550. I recently did something to the IOS that makes the switch not display any output to the console port. Not sure what I did but even doing the reset as instructed in the Cisco docs by holding the mode button foe 2 seconds after boot. I get the flashing green light but still no output. All POST tests pass according to lights so I tried different cables and all baud rates with no change. I hoocked switches back up in lab and can see them in CDP neibors but do not know how to access them from there as they have no IP assigned to them. Remember this is two of them with exact same issue.
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Nov 18, 2012
I am trying to add a Cisco SMB SF300 - 24 Switch to an infrastructure which has only Cisco Catalyst Switches The Core layer is Cisco Cataylst 4503 . Distribution is Cisco Catalyst 3560 and the Access Layer is Cisco 2960 Switches.There about 30 VLANs present in the infrastructure which is advertised to all switches using VTP. Inter VLAN routing is done at the Core Switches by creating Interface VLANs for every L2 VLAN.
1. The new VLAN 150 needs to be created on the new Cisco SMB Switch. If I create a corresponding interface VLAN 150 on the Core Switches , will it route traffic to other VLANs just like it is currently working for Cisco Catayst 2960 Switches ?
2. Upon checking I could see that VTP is not supported on Cisco SMB Switches and I would need to go for GVRP if I need to advertise VLAN information to other Switches. But since GVRP is supported only on CatOS and there is no inter operability between GVRP and VTP , I would need to create VLANs manually on the new Switch . Is that correct ?
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Apr 15, 2013
What needs to be done to convert a WS-C3560G-24TS-E to DC power?
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Mar 3, 2013
Is it possible to manage the switch SMB 300 series using Cisco Prime Infrastructure 1.2?
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Oct 4, 2012
Can We use Cisco HWIC-4ESW as no Switch Port.
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Apr 11, 2013
I am trying to test (if possible) the idea of having 2 6509-E switches connected directly to each other while using VRF-lite (Sup 2T). The idea is to have 3-4 separate networks. For example Net-A, Net-B,Net-C, Net-D. There is no PE router*, just these two switches. Also, there sin't any other access layer switches. All users connect directly to the 6509-E's via switch 48 port switch blades.
Net-A and Net-B on separate VRF's, but able to talk to each other. Net-C and Net-D* on separate VRF's without being able to talk to any other. Net-D* will have a PE since it comes from an external network. This is something I would like to test in a lab environment, but I am not familiar with VRF's.
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