Cisco Catalyst 3750-X or 3560-X Series Switches

Recently, our company was deciding to buy Cisco switches, but they just tell the requirements and I finally focused on two kinds of switches, Cisco Catalyst
3750-X or 3560-XSeries Switches? Who can tell me, tnx in advance.

As I read a blog recently, it listed the specific differences between Cisco 3750-X and 3560-X, except for the common features of Cisco 3750-X and 3560-X, Cisco 3750-X can also offer-- Cisco StackPower technology: An innovative feature and industry first for sharing power among stack members;
Cisco StackWise Plus technology for ease of use and resiliency with 64 Gbps of throughput;
Investment protection with backward compatibility with all other models of Cisco Catalyst 3750 Series Switches.
And made a more detailed comparison between the two products, for ur reference.

Similar Messages

Debian Linux Bonding and Cisco Catalyst 3750 - best practise?

Hello everybody,
I would like to know what's best practice to do this:
The two NICs of a Debian Linux server wants to be connected with two Switchports of a Cisco Catalyst 3750 switch(stack). My goal is to have load-balancing and failover.
My /etc/network/interfaces looks like this:
iface bond0 inet static
       address 192.168.0.30
       netmask 255.255.255.0
       network 192.168.0.0
       broadcast 192.168.0.255
       gateway 192.168.0.1
       dns-nameservers 192.168.0.10 192.168.0.20
       dns-search xyz.mycompany.com
       slaves eth0 eth1
       bond_mode ???
       bond_miimon 100
       bond_downdelay 200
       bond-updelay 200
First question: What bond mode should I use?
The switchports looks like this:
interface GigabitEthernet3/0/4
switchport access vlan 20
switchport mode access
spanning-tree portfast
What changes are necessery here? Something like this?
interface GigabitEthernet3/0/4
switchport trunk encapsulation dot1q
switchport mode trunk
spanning-tree portfast
Thanks a lot for suggestions, hints, etc.! :-)
Greets
Stephan

Hi Michael,
thanks a lot for your answer - and sorry for my late reply!
I like to show you my solution - I hope that it is a solution. ;-)
My config on the switch(stack):
switch#show etherchannel summary
Group Port-channel Protocol    Ports
------+-------------+-----------+-----------------------------------------------
2      Po2(SU)         LACP      Gi3/0/3(P) Gi4/0/3(P)
switch#show running-config interface GigabitEthernet 3/0/3
Building configuration...
Current configuration : 172 bytes
interface GigabitEthernet3/0/3
description myserver, eth0
switchport access vlan 20
switchport mode access
channel-group 2 mode active
spanning-tree portfast
end
lansw01#show running-config interface GigabitEthernet 4/0/3
Building configuration...
Current configuration : 172 bytes
interface GigabitEthernet4/0/3
description myserver, eth1
switchport access vlan 20
switchport mode access
channel-group 2 mode active
spanning-tree portfast
end
switch#show running-config interface port-channel 2
Building configuration...
Current configuration : 82 bytes
interface Port-channel2
switchport access vlan 20
switchport mode access
end
The /etc/network/interfaces of my Debian machine looks like this:
auto lo
iface lo inet loopback
auto bond0
        iface bond0 inet static
        address 192.168.1.xxx
        netmask 255.255.255.0
        gateway 192.168.1.xxx
        dns-nameservers 192.168.1.xxx
        dns-search xxx.xxx.xxx
        bond-mode 4
        bond-miimon 100
        bond-downdelay 200
        bond-updelay 200
        bond-lacp-rate 1
        slaves eth0 eth1
This setup seems to work well. But I'm wondering that there is nothing with "trunking" in my setup. Would you like to give me your opinion about this?
Thanks a lot and many greets
Stephan

I cannot connect by console port to Cisco Catalyst 3750 using ethernet to USB.

Hello. I have one Cisco Catalyst 3750 switch, and two 2950 switches. I am trying to reset their settings using a console cable with a trendnet Ethernet to USB adapter. When I try loading hyperterm or putty on com3 there is no signal. I have the communication port setting on com3. I don't know what the old settings are, and they can be reset. I get connectivity lights when plugging the cable into the switch ports. What am I missing?

Are you definitely using the correct COM Port number? On Windows7 Right Click My Computer > Manage Then select Device Manager and expanPorts (COM & LPT)d in my case is shows Prolific USB-to-Serial Comm Port (COM5).
Once you have the right COM Port number just use the default settings in Putty. You may find the COM Port is locked up which will require a reboot.

VLAN trunking from Cisco Catalyst 3750 to Cisco SF300-48P issue and related

Hello expert,
I'm having difficulties to configure VLAN trunking between Cisco Catalyst 3750 switch with Cisco SF300-48P switch and my workstation unable to get any DHCP IP from our DHCP server via Cisco SF300-48P switch. Below is the snippet of configuration on both switches:
[Cisco Catalyst 3750 Switch]
interface GigabitEthernet1/0/45
description NCC-CC-1stFlr
no switchport trunk encapsulation dot1q
no switchport trunk allowed vlan 101-103
spanning-tree portfast
[Cisco SF300-48P Switch]
interface fastethernet48
spanning-tree link-type point-to-point
switchport trunk allowed vlan add 101-103
macro description switch
!next command is internal.
macro auto smartport dynamic_type switch
interface fastethernet29
switchport mode general
switchport general allowed vlan add 103 tagged
switchport general pvid 103
Are these are correct? Kindly advice!
Thank you very much!
Regards,
Alex

Hi Alex,
for the trunk port on Catalyst on port GE 1/0/45, we need to enable the trunk and for on encapsulation dot1q because this catalyst model is ISL capable also and the SF300 working only with Dot1q Encapsultion
The configuration on catalyst should :
#config terminal
#interface Gi 1/0/45
# switchport encapsulation
#switchport trunk encapsulation dot1q
#switchport mode trunk
#switchport trunk allowed vlan 101-103
#spanning-tree portfast
For SF300 the port trunk it looks fine but for the port where the PC should receive an IP address
#interface fastethernet29
#switchport mode access
#switchport ccess vlan 103
Please let me know after this configuration
Thanks
Mehdi
Please rate or mark as answered to help other Cisco Customers

Cisco Catalyst 3750 - is there a gigabyte version?

We have a Cisco Catalyst 3750 SFP enhanced image, it's 10/100, is there a 1000GHz version of this now?

Hi,
Any 3750 model with "G", i.e. 3750G and all 3750-E models
Check this links
3750 http://www.cisco.com/en/US/products/hw/switches/ps5023/prod_models_comparison.html
3750-E http://www.cisco.com/en/US/products/ps7077/prod_models_comparison.html
Regards,
Dandy

Trunking between Huawei S3900 and Cisco catalyst 3750

One of my edge Huawei S3700 switches is dead, I am going to replace it with a Cisco switch Catalyst 3750 series PoE-48 via a trunk link with GE fiber port on both ends, please see the diagram below.
trunk trunk
Core switchrouter<----------S3700<--------------->Cisco Catlyst 3750
I haven’t touch Cisco switch for many years, I would like to ask the following questions:
1.)      Do I need to take any precaution before connecting this Cisco switch into my Huawei network? Only one link between S3700 and C3750, so I don't need worry anout STP? Do I need to worry about Default vlan regarding trunking port?
2.)      I need to use different trucking protocol e.g. 802.1Q etc to interconnect these two switches (S3700-28TP-SI-AC and Catalyst 3750), please see the following configuration:
For C3750:
switchport trunk encapsulation dot1q
switchport trunk native vlan (What you want)
switchport trunk allowed vlan (VLANs required)
switchport mode trunk
spanning-tree portfast trunk
For S3700:
port link-type trunk
port trunk permit vlan all
Do you think the configurations above are right?
Do I need to manually enter Duplex and speed options ?
3.)If the configurations are not right, then what are the commands for trucking port/link should I use on the Cisco switch (it uses IOS software) and Huawei switch? Procedures of the commands would be really helpful !
Any information and help would be much appreciated.
Thanks
Regards

Hello
3750 - basic config
================
See as you are using this switch as an host switch you need to make sure ip routing isn't enabled ( it isn't by default)
Also it looks like the s3700 Huawei switch is permitting all vlans and I assuming the default native vlan is 1 ( as is cisco) so no need to specify the native either.
If you are requiring the access ports on this new cisco 3750 to be in multiple vlans then usually cisco to cisco interconnect would ultise VTP for vlan propagation however this wont occur between the Huawei switch, so you will need to manually add the vlans on the switch also.
so to summarize below is a basic host switch config for 3750.
conf t
no ip routing
hostname XXXXXX
username xxxx privilege 15 secret xxxxxxx
service password-encryption
enable secret xxxxx
security passwords min-length xx
security authentication failure rate xx log
aaa new-model aaa authentication login default local
logging buffered 4096
no service udp-small-servers
no service tcp-small-servers
service timestamps debug datetime msec localtime
service timestamps log datetime msec localtime
no ip domain-lookup
spanning-tree mode rapid-pvst
spanning-tree portfast bpduguard default
int vlan x ( this may or not be vlan 1 - its whatever the L3 vlan interface is on the core switch for management connectivity)
ip address x.x.x.x y.y.y.y.
exit
ip default-gateway x.x.x.x ( ip address of CORE SVI management interface)
vlan x,x,x,x ( add the L2 vlans to the switch as vtp would not be used between the Huawei switch)
exit
int gigx/x
Description Link to Huawei switch
switchport trunk encapsulation dot1q
switchport mode trunk
switchport nonegotiate
no shut
( no need for spanning-tree portfast trunk- this is usually only for ESX host ports)
int rang fa0/1 -48
Description - Access-ports
switchport host
switchport access vlan x (wihout this defaults to vlan 1)
no shut
clock timezone gmt 0
ntp peer
ntp server x.x.x. prefer
res
Paul

Cisco Catalyst 3750 & Linksys SGE2000P

Hello everyone,
I m in the process of addin new switches with Gigabit port in my server room, actually I have a single switch 48 port (a Cisco 3550) that is connected to a Core Switch via fibre channel but I need to migrate some of my server in a gigabit mode. My management did not allow me to buy a new Cisco switch, because the model with 24 port Gigabit is a bit expensive. so I need to find another solution.
My first thought was to buy a Linksys SGE2000P, and connect it to our Core switch via a fiber channel, to do that I must be sure that a SGE2000P is compatible with my Core switch (3750 12 port SFP) so here is my question does anyone around here has already tried that ? :-)
Thanks in advance
regards,
Arnaud Leresche

I think there should be no compatibility issue BUT I have not personally tried it.

Is it possiable to run image for cisco 3550 PWR-SMI on c3500 XL series switch?

Hi,
as you know cisco 3500 XL switches are L2 switches and there is no ios image which supports L3 functionality compiled for that devices, but what will happen if I'll try to run C3550-IPBASEK9-M image on 3500 XL series switch?
Will it boot up?
Will the SVI functionality be available?
Thank you,
Edik.

The 3550 is a different hardware family so I think you'll find that the 3500XL will likely not boot up with a 3550 image.

Cisco Prime 2.1 - Collection Failure 2950 Series Switch

Hi All,
I am trying to add various devices in the Cisco Prime Infrastructure 2.1, but with the followings I get a message: Collection Failure (Inventory Collection Status).
Cisco Catalyst 2950 24 Switch
Cisco Catalyst 2950G 24 EI DC Switch
¿Why I can't sync this devices?
Kind Regards!
JEFFERSSONQG

Leo,
I think you are not correct ...
( to be truth - I hope it ;- ) )
in PI 2.2 the Cat 3550 is listed under the supported devices whereas the Cat 2950, 2955 are not:
http://www.cisco.com/c/en/us/td/docs/net_mgmt/prime/infrastructure/2-2/release/notes/cpi_rn.html#pgfId-43885
But the latter are listed as being supported in PI 2.1 (while the Cat 3550 is not...)
http://www.cisco.com/c/dam/en/us/td/docs/net_mgmt/prime/infrastructure/2-1/supported/devices/pi21-supported-devices-list.xlsx?mdfid=284540974
So hopefully it is just a matter of time to get them ALL on the list of supported devices for the current version of PI 2.2 ...
I just saw that for Prime Network (Management SW for Service Providers) they even have Cat 3500XL on the list of supported devices... (but I do not know for which type of management they do support these devives, e.g. config, alarming,etc)
http://www.cisco.com/c/dam/en/us/td/docs/net_mgmt/prime/network/4-2/supported/vnes/CiscoPrimeNetwork-4-2-SupportedCiscoVNEs.pdf

Netflow on Cisco Catalyst 3750 Metro Series Switches

Does netflow possible in 3750 metro series?

Hi Syed,
You have to first check if there is any image in switch or not so that you can manually boot from switch: prompt but as you said there is no image in the switch you have to go for xmodem procedure to upgrade the switch.
Have a look at this link and just follow step by step instructions and you will be good to go
http://www.cisco.com/en/US/products/hw/switches/ps607/products_tech_note09186a00800946e5.shtml#xmodem
HTH, if yes please rate the post.
Ankur

Cisco Prime LMS 4.1 - Support for Cisco Catalyst 3560-C Series Switches

Hello together
I have a customer which uses the following switch. Last year I have installed LMS 4.1 for him to manage the switches. Unfortunatly the switch model is not supported. According to the information found on the following site the switch is supported for most of the modules in LMS:
http://www.cisco.com/en/US/docs/net_mgmt/ciscoworks_lan_management_solution/4.1/device_support/table/lms41sdt.html
The oid object of the device is the following: 1.3.6.1.4.1.9.1.1465
Supported Software: 12.2(55)EX (Customer has 12.2(55)EX3
Version Support Type: Device Update
So I updated all device updates I was able to find.
Step 1: For that I went to Admin > System > Software Center > Schedule Device Downloads and created a job where I have downloaded the latest versions of all packages.
Step 2: Installed the downloaded packages Admin > System > Software Center > Device Update and installed all the packages.
Unfortunatly I don't see the same result like described in the Supported Device Table for LMS 4.1.
- Cisco View -> works
- Inventory and Config Collection -> works
- Fault Monitor not working -> Error Code Unsupported
- Network Topology Layer 2 Services -> Device Type ciscoProducts.1465, Symbol Question Mark
- VLAN Management -> Doesn't work
- User Tracking > seems also not to work
When I open the report for supported devcies (Reports > System > Device Support) and search for C3560C... I find the following devices, but not mine which i need:
C3560C-8PC-S     .1.3.6.1.4.1.9.1.1466
C3560CG8PC         .1.3.6.1.4.1.9.1.1317
C3560CCG8TC     .1.3.6.1.4.1.9.1.1318
wsC3560CPD8ptS     .1.3.6.1.4.1.9.1.1368
Does anybody have experience with the same switch type / model? Am I doing something wrong or is this type of switch not implemented correctly till now? Further the docuemntation supported devices would be wrong.
Thanks for any feedback Erich

Thanks but I just heard back from my Cisco SE and he assures me that an AP will NOT use up a license.
I've asked him to verify his answer for me.
Is your answer based on real world expereince (the best there is)? That is, are you running Prime LMS 4.1 and does it indeed use up a license for each light-weight AP it discovers & manages?
Thanks for mentioning options 1-3 but I do not wish to employ any of them. I don't mind buying the additional licenses for APs ... I just need to know if I have to or not.
Ian.

Alternative switch to Cisco Catalyst 3750v2-24FS and 3750-24FS

I`m looking for an alternative to these two switches:
1. WS-C3750V2-24FS-S Cisco Catalyst 3750V2-24FS Switch with 24 100FX SFP + 2 Gigabit Ethernet SFP Ports
2. Cisco Catalyst 3750-24FS (WS-C3750-24FS-S 100BASE-FX)
They are now EOL and not available.
I have a campus style network and need to be able to connect multiple 100FX fibre switches back to a central switch. The 1st unit uses 100FX SFP modules and the second has in-built 100FX ports. I`m struggling to find anything from Cisco that will give me multiple (i.e 12+) 100FX ports.
Could anyone please point me in the right direction?
Many thanks,
Paul

Hi Paul ,
Replacement for both switch is WS-C3650-48TS-S.
http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps5528/eos-eol-notice-c51-730227.html
http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps5023/end_of_life_c51-687707.html
Regards
Don't forget to rate helpful posts
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Catalyst 3750 Ingress SPQ/SRR behavior

Do Cisco engineers review this community at all?
I am working on the latest version of QoS standard for our Enterprise and noticed the following conflicting information officially provided by Cisco.
My question relates to ingress/pre-ring Strict Priority Queue (SPQ) logic.
Cisco Catalyst 3750 QoS Configuration Examples document states that SPQ on ingress is configured and serviced as follows
mls qos srr-queue input priority-queue 2 bandwidth 10
mls qos srr-queue input bandwidth 90 10
SPQ services Q2 up to the configured 10% of ingress bandwidth
Any excessive traffic in Q2 is not dropped, but is serviced by SRR in accordance with the configured weights
For example, a momentary 5Gbps of aggregated ingress EF traffic will be serviced in the following way
SQP services 10% of total ring's bandwidth, or 3.2Gbp, leaving 1.8Gbps for SRR processing
SRR services excessive 1.8Gbps in accordance w/ weights Q1 - 90 and Q2 - 10, such as Q1 gets 25.92Gbps and Q2 get 2.88Gbps more.
The following pictures provides in-depth look into Ingress queuing logic.
Alternatively, Cisco Medianet Campus Design v4.0 provides the following example w/ comments
C3750-E(config)#mls qos srr-queue input priority-queue 2 bandwidth 30
! Q2 is enabled as a strict-priority ingress queue with 30% BW
C3750-E(config)#mls qos srr-queue input bandwidth 70 30
! Q1 is assigned 70% BW via SRR shared weights
! Q2 SRR shared weight is ignored (as it has been configured as a PQ)
Basically, they now say Q2 bandwidth weight is ignore because it is configured as Strict Priority Queue. Doesn't it look contradictory?
In my humble opinion Medianet (or SRND v4.0!!!) provides an incorrect information re ingress queuing on Catalyst 3750 platform.
I am not sure I can easily test it, providing that an internal ring must experience a congestion. I don't think I can send more than 32Gbps of traffic into any of my lab 3750 switches.
Also, I don't think this mistake can be critical in my environment as I don't expect to have momentary full capacity load on those... but it can be critical for others.
Much appreciate
Tim

Changing Catalyst 3750 Console Speed

Does anyone know if the console speed of a Catalyst 3750 can be changed? The switch does not have a valid IOS image installed and the only prompt accessible is the Switch: recovery console prompt. Before using the xmodem I am hoping there is a way to increase the baud rate to speed things up a bit.

Check out document:
http://www.cisco.com/en/US/products/hw/routers/ps282/products_installation_guide_chapter09186a008007dfca.html
It available witout a login. Look in the section:
"Modifying the Configuration Register in Menu Mode"
Good info to print and keep on hand, cuz when you need it...
HTH.
Jim

Mls qos on Catalyst 3750

I can't understand dropping algorithm used by WTD on Catalyst 3750.
Giving the following configuration:
Switch(config)# mls qos queue-set output 2 buffers 40 20 20 20
Switch(config)# mls qos queue-set output 2 threshold 2 40 60 100 200
1. What happens if buffer utilization for queue 2 is between drop-threshold1 and drop-threshold2? Are the packets dropped using a specific algorithm as in WRED?
2. What happens if buffer utilization for queue 2 is between drop-threshold2 and maximum threshold? Are the packets dropped using another algorithm?
3. Is it true that with buffer utilization above maximum threshold all packets are dropped?
Thanks
Stefano

Paresh,
thanks a lot for your suggestions!
Anyway I still have some doubt related to WTD thresholds. The sintax is the following:
mls qos queue-set output qset-id threshold queue-id drop-threshold1 drop-threshold2 reserved-threshold maximum-threshold
For drop-threshold1 and drop-threshold2 the range is 1 to 400 percent. For reserved-threshold the range is 1 to 100 percent.
By default, drop-threshold1 and drop-threshold2 for queues 1, 3, and 4 are set to 100
percent. Drop-threshold1 and drop-threshold2 for queue 2 are set to 50 percent. The reserved
thresholds for queues 1, 3, and 4 are set to 50 percent. The reserved
threshold for queue 2 is set to 100 percent. The maximum thresholds for
all queues are set to 400 percent.
With these default settings, queue 2 has drop-threshold1 and drop-threshold2 set to 50 percent and reserved threshold set to 100 percent.
The problem is that drop-thresolds are percentage values related to the ENTIRE buffer, reserved threshold is related to the specific queue's buffer.
So with default settings (1/4 of total buffer for each queue) reserved threshold seems to be HIGHER than drop-thresolds!!!
reserved threshold = 1/4 total buffer
drop thresholds = 50% over 400% total buffer = 1/8 total buffer
Maybe there's something missing...
Thanks
Stefano

Cisco Catalyst 3750-X or 3560-X Series Switches

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