Cisco Switching/Routing :: 3750-X Allied Telesis Switch Interoperability
Sep 22, 2012
Does the Catalyst 3750-X (WS-C3750X-24T-L) and Allied Telesis AT-9924T url... switches work together without any issue? The two switches will be connected using the following modules: [code] The Allied Telesis switch is the core L3 switch currently being used, and the new Cisco switch to be purchased will be used for servers (single VLAN 100). It is planned to configure link aggregation between the switches. Because the Cisco switch is to connect only servers all ports except connected to Allied Telesis switch will be on a VLAN 100. I have checked the Cisco switch software configuration manual and could not find any word about GVRP protocol support. Does that mean the 3750-X will not be able to do VLAN trunking with Allied Telesis switch?
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Oct 29, 2012
I'm working with an established Network, which has 2 Allied Telesis Switches (1)&(2).I must add another Allied Telesis (3), and a Cisco Switch.If I connect just the Cisco Switch, and the AT(3), it works ok. I mean it trunks. It also works ok if I connect the AT(3) with AT (1) and AT (2). But if I want to connect the Cisco SW with AT(1) and AT(2), or AT(1), AT(2) and AT(3) It doesn´t trunk. Even if I set the Cisco Switch port I use, as a trunk port.I think I have a problem with the vlans already created on AT1 and AT2. But the problem is that I cannot access to the AT console mode.
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Apr 3, 2013
I tried many different things to get the accurate answer for my issue. I wanted to know, will i face any connectivity or looping issue in the network if i connect Broacade SAN switch on a cisco 6500 switch.Also need to know to maintain a DATA DOMAIN which SAN switch is better? Cisco or other vendor.
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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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Dec 17, 2011
I have been looking into this for a while and I can't seem to figure out why my 2nd vlan is not able to connect properly to the net.
My switch has 12 ports where my devices connects directly, they are all on Vlan 1 and they all work perfectly. on Port 12 I have a dlink router that is connected to a cable modem. the dlink router has an Ip address of 192.168.0.20
I created a second vlan (vlan2) and enabled dhcp relay on it. then I assigned port 9 on the switch to (vlan2)my laptop which is connected to port 9 seems to get an ip address fine and able to ping only some devices on my network (vlan1) and is not able to go out to the internet. I think it has to do with the routes. [code]
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Jul 27, 2012
I have the task of replicating the router config on a 3825 router on a 3750 switch. Reason is we are taking out the router and replacing it with the switch to make use of the router for other functions.
Below is main part of the router config:
!
ip source-route
ip cef
!
!
multilink bundle-name authenticated
!
license udi pid CISCO3825 sn FCZxxxxxxx
!
vlan internal allocation policy ascending
[code].....
The 3750 switch I have runs C3750E-UNIVERSALK9-M, Version 12.2(55)SE3 on a LAN BASE license.
The first thing I have done is to order for a license upgrade to IP BASE which would give the support for OSPF routing.I do not see much of an issue with the Interface configs, however, I am not too sure about replicating the routing config on the switch.
My question is can I run the commands as shown for the OSPF routing on the switch? If not, can I get suggestions on how best to set this up on the switch?
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Apr 16, 2012
I have been looking into this for a while and I can't seem to figure out why my 2nd vlan is not able to connect properly to the net. My switch has 12 ports where my devices connects directly, they are all on Vlan 1 and they all work perfectly. on Port 12 I have a dlink router that is connected to a cable modem. the dlink router has an Ip address of 192.168.0.20,I created a second vlan (vlan2) and enabled dhcp relay on it. then I assigned port 9 on the switch to (vlan2),my laptop which is connected to port 9 seems to get an ip address fine and able to ping only some devices on my network (vlan1) and is not able to,go out to the internet.
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Mar 11, 2012
I'm running into what seems a basic ip routing config problem with a Catalyst 3750 (IP Base) switch. I have several VLANS configured on the switch with IP routing enabled, and the switch is connected to the inside interace of a new ASA 5520 as follows:
ASA5520 IP (Default gateway): 192.168.1.1Switchport Gi1/0/1 is configured as a routed port, IP address 192.168.1.3 255.255.255.0Example VLAN is VLAN 100, IP address 192.168.100.1 255.255.252.0 From the switch CLI, I can ping all VLAN addresses, as well as the ASA5520, and the client laptop I'm testing with from VLAN 100.
From the client laptop on VLAN 100, I can ping all switch interface and VLAN addresses (inter-VLAN routing is working), including 192.168.1.3, but I CANNOT ping the default gateway at 192.168.1.1.
Here is the relevant configuration information on the 3750:
!
no aaa new-model
switch 1 provision ws-c3750x-24
system mtu routing 1500
[Code]....
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Nov 7, 2011
configure qos in Cisco 3750 switch.I have configured below template and applied on the vlan interface.But i am getting the hit on the access list but I am not able to get hit on the class map.
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Jul 19, 2012
I had a bad expirience with Switch 3750-X. Because of an auditing security processess, my customer ran a software called "Nessus" to do a scanning of vulnerability on the network. When this software is point to switch, the process of the switch will next to 100% and reset. The software only do a listening on the ports to see what ports are opened and the switch should not reset because this. Bellow is the log os switch on the moment of test; we note that the processess 'HTTP' rise moments before the switch reset. I disable the HTTP service on switch but the problem persist. The test was made only one machine connected to switch.
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Aug 12, 2012
We have three Cisco 3750 - 48port POE -LAN switches and i am trying to see if there are any issues when we stack POE and Non-POE type of switches.Aslo looking for information on the advanatage and disadvantage the stacking can provide on a Cisco 3750 48port.
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Dec 12, 2010
The question is: Will a 3750 switch route Jumbo frame sizes (e.g. 9000 MTU)?
We know that we can change the System MTU to 9000, and someone on a previous thread said that we can change the Routing MTU to 9000 as well, although I couldn't figure out how to do that. However, regardless of how we configure the System MTU and Routing MTU, I don't think we're able to adjust the MTU on L3 VLAN interfaces, so if we want to actually "route" between VLANs on the switch, we're limited to 1500 MTU.
Our situation is that we have a customer connecting to our 3750 switch, and this customer wants to use Jumbo frames. The customer connects to our 3750 switch via their own VLAN, with their own L3 VLAN interface configured on the switch. The customer will point their traffic towards the L3 VLAN interface, then we want to route them onto another VLAN, via a different L3 VLAN interface, before forwarding their traffic. Because of the limitations noted above, specificially regarding the routing between these VLANs via L3 interfaces, I do not think we'll be able to support 9000 MTU frames on this 3750 switch. I think the L3 VLAN interfaces will limit us to 1500 MTU, regardless of what we configured via the global System MTU and Routing MTU settings.
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Jun 8, 2007
How do you properly remove the QOS queues and configs from the switch.A was using auto qos which created a whole mess of qos configs on my running-config. I did "no mls qos" in conf term but that did not remove the queues.
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Jun 21, 2012
i want to remove an access layer 3750 48 POE master switch and replace with a new 3750 switch in the stack. i want to copy the same configuration to new switch since the old switch is having POE issue and I got replacement of the malfunctioned switch. we have VTP domain is configured in the network...
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Sep 11, 2012
Cisco 3750, I'm trying to reset the password but cannot communicate with my switch
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Dec 9, 2012
is it generally possible to connect another switch, such as a 3750 to a port of a fabric extenders (C2232PP-10GE)?
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Apr 16, 2013
I have Layer_3 " 3750-x " , so I can't do any routing on the switch , so if I need to Upgrade the IOS what is the proffered image that support hte routing , and Is it free or should I pay?
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Oct 19, 2012
In Cisco 3750 facing high CPU utilization for specific period. During this period traffic response times across the switch degrades. Steps to identify interface potentially generating traffic. I have attached 'sh proc cpu history' , ' sh ip traffic', 'sh proc cpu sorted' during troubled period .
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Mar 27, 2013
I have a 2 member 3750-x switch stack that was upgraded to 15.2 today via CNA. All the files were transfered and expanded correctly and it got to the step where the switches needed to be reloaded but on reload they froze.
I connected a console cable and power cycled the stack. I see the flash initialize and then the IOS image start to load. Lots of @ symbols and then nothing. It just sits there. The system light on the switches, while flashing green during the load, is now off. No light at all. But fans are running and the process will repeat itself if power cycled.
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Nov 17, 2012
i have standalone 3750 switch. RPS light is green and system light is off.
3750TS#sh env all
FAN is OK
TEMPERATURE is OK
[Code].....
i have another switch with same model and ios its RPS light is off and system light is green
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Apr 30, 2013
We currently have a stack of 5 x 3750 switches and i want to remove switch number 3 (it has the least number of things plugged in). What will happen to switch 4 and 5 will they be renumbered 3 and 4, and will the config automatically update this if it does?
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Nov 17, 2012
I configured 3750 A switch with vlan 20 and its IP address 192.168.20.41Its default gateway was 192.168.20.3Then i configured 3750 B switch with same default gateway and vlan 20 IP 192.168.20.43My question is now when we stack it becomes single switch and now vlan 20 ip address is 192.168.20.43 thats only IP i can see.So how does stack switch choose vlan 20 IP?Does it choose highest IP address between two switches if they have same vlan 20 as in my case?Also when i go to switch 3750 b by session command and do sh ip route it does not show ip default gateway .Also it shows vlan 20 as admin down .
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Aug 11, 2011
I have a doubt. In my environment I have two Switch 3750-X in stack.
My question is: How to shutdown remotely only a switch in stack?
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Nov 24, 2012
I want to configure " Username & Password" on Cisco 3750 switch. I need to configure as "username xxxxxx privilege 15 password 5 xxxxxxx "
Is it possible to create password with level 5 ? I want to know about level 5 "password" & level 7 "password" ?
when i tried I am not able to configure with " password 5"
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Jun 4, 2012
Our switch is very high cpu in process arp
Am debug ip arp track command the result as below
-- on this switch have interface vlan 201 ip subnet is 10.11.201.1/24
Jun 5 15:30:40.732 GMT+7: IP ARP: rcvd req src 10.11.201.217 0001.6c6b.8ab9, dst 172.27.116.73 Vlan201
Jun 5 15:30:42.150 GMT+7: IP ARP: rcvd rep src 10.11.201.217 0001.6c6b.8ab9, dst 172.27.116.4 Vlan201
Jun 5 15:30:42.150 GMT+7: IPARP_TRACK: ARP tableid(0) 10.11.201.217 Vlan201 mode(1) modified.
Jun 5 15:30:42.150 GMT+7: IP ARP: rcvd req src 10.11.201.217 0001.6c6b.8ab9, dst 172.27.116
and then am try to shutdown vlan database 201 after that the cpu process has to normal state.
How to check the root cacus?
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Jul 16, 2012
We have two 3750-x stacked switches with IP base license. We need to upgrade them to IP services license. I read some where that it is possible to install IP serivces license to only management switch and no need to purchase/install same license to other switches on the stack. But, I could not find/recall where I read it and as far as I know it was not official cisco documentation.
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Apr 15, 2012
There 's a Cisco IP phone that sits between a PC and the switch port. On the switch port, no MAC address is learned. However, the switch is able to detect the IP phone and deliver power to it: [code] Switch is Catalyst 3750 with IOS version 12.2(58)SE1.
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Feb 16, 2012
I have a 3750 switch and I am trying to configure PBR (route-maps) in it.But when I try to apply the policy to a vlan interface the policy does not show in the interface.So I can not use PBR to choose my default gateway!Question: Does PBR work in a 3750 switch? Can PBR be configured in a vlan interface? There is any problem with the IOS that I do not know?
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Oct 30, 2011
We have a stack of 3 cisco swithes 3750s WS-C3750G-24TS 12.2(25)SEB4 .We plan to recover a switch from the stack as it is not needed any more The switch we plan to recover is the existing Master.If we change the priority (switch 1 priority) and make another switch the master using command line will we have any loss of connectivity to the servers conecting to the stack ?
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Jan 13, 2013
What is the most cost effective way of connecting a Nexus 5k with a 3750, Apparently we cannot use 7 and 10 meter twinax cables to connect the 3750 switches to Nexus 5Ks.
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Aug 8, 2011
I 3750 doesn't support "shape" command under policy map. How do I limit the bandwidth to 3 M? [code]
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Jan 13, 2013
I've created a scenario using a 3750 cisco as core switch ad other 6 switch model 2900 in access level.my problem is this, the router is not a cisco router, and this router is not able to make NAT on more than one subnet.Into the core switch I've created 4 VLAN and I must to give internet access to 3 of them, 192.168.0.0/24 (vlan1), 172.16.0.0/24 (vlan2), 172.17.0.0/24 (vlan3).I've connected the switch to router via gigabit ethernet 0/1 and I've assigned to this interface ip address 192.168.10.2, the router ip address is 192.168.10.1, Switch ip default-gateway is router ip address 192.168.10.1, ip default route is 0.0.0.0 0.0.0.0 192.168.10.1 I've enabled ip routing feature and I've set no switchport feature to interface gigabit ethernet 0/1.From core switch I can ping router ip address but I can't make it from all other user, and the users not able to have internet access.
Below the switch configuration (only necessary strings)
version 12.1
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
[code].....
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