Snmp for 3750 switch stack

Hi,
I have two 3750 switch stack together with one ip address mange the stack.
Can I monitor the memory and cpu for each individual switch? what is the oid then?
Thanks.
C.K.

Hello CK,
On the Catalyst 3750, the stack master handles the SNMP requests and traps for the whole switch stack.
The stack master transparently manages any requests or traps that are related to all stack members. When a new stack master is elected, the new master continues to handle SNMP requests and traps as configured on the previous stack master, assuming that IP connectivity to the SNMP management stations is still in place after the new master has taken control.
So to answer your question, with the OID for CPU and Mempory usage the switch will return only values for the active master. The other stack members are hot standby and do not produce SNMP information for CPU and/or Memory.
HTH
--Leon

Similar Messages

Best IOS version for 3750 switch

I have just received 2 3750 switches, but both have a different IOS version.
One has -> IOS version 12.1(19)EA1d
and the other has -> IOS version 12.2(25)SEB2.
I just want to use the switches as Gb collectors for a serverfarm seperatly (so no stack configuration) with a redundant uplink to my distribution layer.
Can someone advise my which IOS is the best for my network?
Thanx, Marty

Switch 1:
Cisco Internetwork Operating System Software
IOS (tm) C3750 Software (C3750-I5-M), Version 12.1(19)EA1d, RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2004 by cisco Systems, Inc.
Compiled Mon 05-Apr-04 22:06 by antonino
Image text-base: 0x00003000, data-base: 0x009206D8
ROM: Bootstrap program is C3750 boot loader
BOOTLDR: C3750 Boot Loader (C3750-HBOOT-M) Version 12.1(14r)EA1a, RELEASE SOFTWARE (fc1)
2224-3750-037000137 uptime is 23 hours, 52 minutes
System returned to ROM by power-on
System restarted at 09:02:42 GMT Thu Aug 11 2005
System image file is "flash:c3750-i5-mz.121-19.EA1d/c3750-i5-mz.121-19.EA1d.bin"
cisco WS-C3750G-24TS (PowerPC405) processor (revision H0) with 118776K/12288K bytes of memory.
Processor board ID CAT0904X00B
Last reset from power-on
Bridging software.
1 Virtual Ethernet/IEEE 802.3 interface(s)
28 Gigabit Ethernet/IEEE 802.3 interface(s)
The password-recovery mechanism is enabled.
512K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address : 00:13:1A:65:50:00
Motherboard assembly number : 73-7058-12
Power supply part number : 341-0045-01
Motherboard serial number : CAT090400A0
Power supply serial number : LIT09020266
Model revision number : H0
Motherboard revision number : A0
Model number : WS-C3750G-24TS-E
System serial number : CAT0904X00B
Hardware Board Revision Number : 0x09
Switch Ports Model SW Version SW Image
* 1 28 WS-C3750G-24TS 12.1(19)EA1d C3750-I5-M
Configuration register is 0xF
Switch 2:
Cisco IOS Software, C3750 Software (C3750-IPSERVICES-M), Version 12.2(25)SEB2, RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2005 by Cisco Systems, Inc.
Compiled Wed 08-Jun-05 01:19 by yenanh
ROM: Bootstrap program is C3750 boot loader
BOOTLDR: C3750 Boot Loader (C3750-HBOOT-M) Version 12.1(14r)EA1a, RELEASE SOFTWARE (fc1)
2224-3750-037000138 uptime is 59 minutes
System returned to ROM by power-on
System image file is "flash:c3750-ipservices-mz.122-25.SEB2/c3750-ipservices-mz.122-25.SEB2.bin"
cisco WS-C3750G-24TS (PowerPC405) processor (revision L0) with 118784K/12280K bytes of memory.
Processor board ID CAT0925Z0WZ
Last reset from power-on
1 Virtual Ethernet interface
28 Gigabit Ethernet interfaces
The password-recovery mechanism is enabled.
512K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address : 00:14:A8:71:CA:00
Motherboard assembly number : 73-7058-13
Power supply part number : 341-0045-01
Motherboard serial number : CAT09251J90
Power supply serial number : PHI09220165
Model revision number : L0
Motherboard revision number : A0
Model number : WS-C3750G-24TS-E
System serial number : CAT0925Z0WZ
Hardware Board Revision Number : 0x09
Switch Ports Model SW Version SW Image
* 1 28 WS-C3750G-24TS 12.2(25)SEB2 C3750-IPSERVICES-M
Configuration register is 0xF

QoS Questions for 3750 Switches

2x3750 switches are stacked and we are trying to simulate traffic congestion at the UTP ports by using Smartbit 6000C. The objective of the test is to see if the QoS setting works in reality even though we see from Wireshark that the packets are marked with DSCP for voice traffic.
Setup is as follows :
Smartbit<->Avaya IP Phone<->3750 switches<->6509 switch.
Please note that the configuration is set on the 3750 switch port as well as trusted on the Cat 6 switch port. However, when I set to continuous traffic with byte size of 64. Even though its a 100Mbps port, the Avaya IP Phone is already acting weird with hanged symptom. Just side note is that performing "show mls qos inter gi2/0/7 statistic" shows that data and voice traffic are marked on the different priority which seemed correct.
1) Is this the right way to test? If not, what should be the correct way?
2) The port that's connected to Smartbit is configured and it seemed that with the continuous traffic, even other IP Phones are hanged even though I have set Smartbit to hit on the IP address of the CAT6 Switch port. This is not normal right as this is supposed to be unicast traffic. Any idea what could be the reason?

Hello Brandon,
I understand your concern and how you want to test, but with the VoIP services you need to understand that there are 2 points (telephones if you want) involved. Your local one, where you might have taken all the necessary steps to protect and prioritize your voice traffic, and the oposite end which also need to have the voice packets prioritized.
Now, from your description, I understand that the packets (voice and data) marked correctly (I believe on C3750), but that's not enough. You need to use CBWFQ together with LLQ to give priority to the Voice traffic over data in case of congestion. Do you have such configuration? Can you show us some excerpt from it?
Next, during the testing, you said that your phone hang-up...where you in a call?
To respond to your questions:
1. The start is ok, but we need more details. You are pushing traffic from Smarbit, this is your local end, but where is the traffic pushed to (remote end), who is receiving the traffic?
2. In theory, you shouldn't have any impact over voice if links are 100Mbit, only if you have such a power packet generator that could fill 100Mbit. What do you mean by "This is not normal right as this is supposed to be unicast traffic"? VoIP is also unicast traffic...
I can see that you are determined to solve this issue, and this is OK as it will help you back with gained knowledge, but I have to warn you that troubleshooting QoS / Voice related problems may be more tricky than you think, as it will involve a strong know-how in these areas.
We will help, but you have to come back with more precise details.
Good luck!
Calin

ASA , 3750 Switch stack ,Etherchanel cross-stack and HA

Hi Guys,
I have run into a scenario where there they use a switch stack of four 3750’s and two ASA 5540 in Active-stanby HA Pair.
ASA's are connected with 4 interfaces across stack (1 interface to each switch).
1 Etherchannels (4 ports) is configured between ASA and switch. All vlans are terminated on ASA as a subiterfaces.
somehting like:
Port-channell1
no ip address
Port-channell1.10
vlan 10
ip address 192.168.10.1 255.255.255.0 stanby 192.168.10.2
Port-channell1.20
vlan 10
ip address 192.168.20.1 255.255.255.0 stanby 192.168.20.2
..and so on..
There is about different 60-70 vlans currently terminated on ASA.
We found a problem with failover testing:
When we test the failover and fail manually with “failover active” command,
It looks like only 29 vlans can fail to backup ASA instantly , the rest can take up to 5 min.
Is there a limitation for ASA or 3750 etherchannel in this scenario why it would not failover instantly for all vlans ?
Thanks
Martin

sory mistake there :
Port-channell1.20
vlan 20
ip address 192.168.20.1 255.255.255.0 stanby 192.168.20.2
Martin

3750 switch stacks

I am new to the networking world and have some questions.
I have 1 stack of six 3750 switches with a 10.50.3.10 ip address
On the first stack (.10)I have int 6/0/19 , 20 and 21 assigned.
I have a second ip scheme with one switch with an ip of 10.50.3.11
Do I use a smartwise cable to connect the switches even though they have different ip schemes? Or do I use a only a cat 5 to connect the 2 differenet stacks. Also, do I need to configure the 6/0/19, 20 and 21 ports on the second ip scheme. I don't think it is possible now that I am writing this if the smartwise cables are not used. Any help would be appreciated.

I apologize but I am not following you entirely. If you stack the 3750, you must use the stacking port and use the stackwise cable.
You said: I have 1 stack of six 3750 switches with a 10.50.3.10 ip address
>> This would mean you stacked them using the stackwise cable and all these six switches are seen as one single device.
What do you mean by you have int 6/0/19-21 assigned? Assigned them what?
You said: I have a second ip scheme with one switch with an ip of 10.50.3.11
>> Sounds like you have another stack? Because the device will complaint if you address two different interfaces in teh same switch/router to the same subnet (10.50.3.10 and 10.50.3.11), unless these addresses are masked as host but I doubt that.

WAAS Configuration for 3750 Switch

I am configuring a 3750 switch with 12.2(52)SE according to:
(from https://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/12.2_52_se/configuration/guide/3750_scg.pdf )
This example shows how to configure SVIs and how to enable the web cache service with a multicast group list. VLAN 299 is created and configured with an IP address of 175.20.20.10. Gigabit Ethernet port 1 is connected through the Internet to the web server and is configured as an access port in VLAN 299. VLAN 300 is created and configured with an IP address of 172.20.10.30. Gigabit Ethernet port 2 is connected to the application engine and is configured as an access port in VLAN 300. VLAN 301 is created and configured with an IP address of 175.20.30.50. Fast Ethernet ports 3 to 6, which are connected to the clients, are configured as access ports in VLAN 301. The switch redirects packets received from the client interfaces to the application engine.
Note Only permit ACL entries are being used in the redirect-list; deny entries are unsupported.
Switch# configure terminal
Switch(config)# ip wccp web-cache 80 group-list 15
Switch(config)# access-list 15 permit host 171.69.198.102
Switch(config)# access-list 15 permit host 171.69.198.104
Switch(config)# access-list 15 permit host 171.69.198.106
Switch(config)# vlan 299 WEB SERVER
Switch(config-vlan)# exit
Switch(config)# interface vlan 299
Switch(config-if)# ip address 175.20.20.10 255.255.255.0
Switch(config-if)# exit
Switch(config)# interface gigabitethernet1/0/1
Switch(config-if)# switchport mode access
Switch(config-if)# switchport access vlan 299
Switch(config)# vlan 300 WAE
Switch(config-vlan)# exit
Switch(config)# interface vlan 300
Switch(config-if)# ip address 171.69.198.100 255.255.255.0
Switch(config-if)# exit
Switch(config)# interface gigabitethernet1/0/2
Switch(config-if)# switchport mode access
Switch(config-if)# switchport access vlan 300
Switch(config-if)# exit
Switch(config)# vlan 301 CLIENTS
Switch(config-vlan)# exit
Switch(config)# interface vlan 301
Switch(config-if)# ip address 175.20.30.20 255.255.255.0
Switch(config-if)# ip wccp web-cache redirect in
Switch(config-if)# exit
Switch(config)# interface gigabitethernet1/0/3 - 6
Switch(config-if-range)# switchport mode access
Switch(config-if-range)# switchport access vlan 301
Switch(config-if-range)# exit
===================================================================
Question: How do I configure my WAE to play nicely with this switch?

Hi James,
Here is the link to WCCP config part on WAE:
http://www.cisco.com/en/US/docs/app_ntwk_services/waas/waas/v441/configuration/guide/traffic.html#wp1041742
In your case, if my understanding is right, VLAN300 is where you want to connect WAE and WAE is also L2 adjacent. if that is true, here is the config you need on WAE:
wccp router-list 1 171.69.198.100
wccp tcp-promiscuous router-list-num 1 l2-redirect mask-assign l2-return
wccp version 2
Please note that 3750 supports L2 redirection only with redirect IN statements on 3750 interfaces connected to servers and clients.
Hope this helps.
Regards.

ACL not working on 3750 Switch Stack on a trunk port

I cannot figure out why the ACL is not working on a 3750 running 12.2 (55)SE on a trunk port. For testing, there is 1 x IP (10.101.15.13) that should be denied to all VLANs on the trunk. I have tried standard and extended list, but neither seem to work.
What am I doing wrong?
Access-List:
Standard IP access list 10
    10 deny   10.101.15.13 log
    20 permit any log
Access-List Interface:
interface GigabitEthernet7/0/10
description ESX Trunk
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,2,60-63
switchport mode trunk
ip access-group 10 in
Mac-Address on the Switch Port:
63    0050.569a.6d9f    DYNAMIC     Gi7/0/10
Windows Machine MAC:
Description . . . . . . . . . . . : vmxnet3 Ethernet Adapter #4
Physical Address. . . . . . . . . : 00-50-56-9A-6D-9F
Windows Connection (which should be denied):
TCP    10.20.63.4:3389        10.101.15.13:21289     ESTABLISHED     InHost

PACL only apply to an L2 interface. On an L2 interface the only direction that can be applied is INBOUND. On an L3 interface INBOUND or OUTBOUND can be specified.
In any case, I have worked around the issue by applying VACLs. Marking this as resolved.

Looking for 3750 replacements

Hi,
We currently have 3750 switch stacks for our office LAN (6 switches in each stack). These are now end of life/support and are failing on a regular basis.
We are looking to replace them and I am just wondering what people would recommend to replace them with.
The main criteria to fulfil is there must be 1400 ports and they must be POE. I want 100Mbps ports as I dont really feel gig is required, but would like some gig options as well so I can compare the difference in price.
Any recommendations would be appreciated.
Thanks

Disclaimer
The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
Liability Disclaimer
In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
Posting
Nexus are oriented more for high performance in the data center. For user access, they might be much more expensive and they can (only currently?) miss some features. (We've found their QoS cannot accomplish what we routinely do on 3Ks, 4500s or 6500s.)
4500s often can be in the same price ballpark of a large(r) 3750 stack, especially when supporting full L3. Basically 4500 line cards cost less, but that's offset by other 4500 components, especially the supervisors.

3750 switch not forwarding EAPoL to RADIUS server

I have a 3750 switch stack running version 12.2(53)SE2 IPBASEK9-M. I have dot1x configured on the switch and have a Windows 7 PC connected with 802.1x configured on the interface. I see the EAPoL start message from the PC, but I don't see any RADIUS packets from the switch to the RADIUS server. I have a simple dot1x config just to try to get it working prior to adding additional features such as guest-vlan...
Config and debug file attached.
I don't know if the ip dhcp snooping and arp inspection configuration is causing an issue with this or not. I see the EAPoL packet received on the switch as seen in the debug attachment, but I still never see the RADIUS packet. I did set both to trust on the interface but still the same outcome. I can't disable it since it is a production switch with a test interface.
Any ideas?
Thanks,
Mark

Hi Mark,
The config seems to be OK, nothing I would miss if I assume that mandatory
commands not shown in your config are in place
aaa-new-model is required for dot1x to function, I don't seee that command.
I have configured dot1x just a few times but I always used the commands
aaa authorization network default group radius
and
radius-server vsa send
(honestly, I'm not sure whether they are required, it's just a template which
I know as working)
Careful if this is a production system
AAA New-Model will radically change every authentication behaviour on the
switch if it is not already configured
The main issue seems that the catalys is not sending an "EAP-Request/Identity"
back, Radius-Packets will only be sent after the "EAP-Response/Identity":
(taken from http://www.cisco.com/en/US/docs/switches/lan/catalyst3750e_3560e/software/release/12.2_50_se/configuration/guide/sw8021x.html)
Do you have any other dot1x client?
You can use a cisco router for testing dot1x if you have
test system at hand:
conf term
dot1x credentials DOT1XTEST
username testuser
password testpassword
exit
interface [name-of-interface-connected-to-catalyst]
dot1x pae supplicant
dot1x credentials DOT1XTEST
Another approach:
use the classic config (not auth-manager but "dot1x syntax") you are
using a very new version of IOS, might be buggy:
Switch(config)# aaa new-model
Switch(config)# aaa authentication dot1x default group radius
Switch(config)# aaa authorization network default group radius
Switch(config)# radius-server host [IP-address] auth-port [port] key [port]
Switch(config)# dot1x system-auth-control
Switch(config)# interface [interface]
Switch(config-if)# switchport mode access
Switch(config-if)# dot1x port-control auto
Hope something is helpful
Additional debug hints:
use
show dot1x all
show dot1x interface [interface-name] detail
show dot1x interface [interface-name] satistic
Do see something like "RxResp = x" with x>0?
rgds, MiKa

Configuring Root Bridge Primary and Secondary on a Switch Stack

Hi, Consider a small LAN using a collapsed core design with two Catalyst 3650 switches in a stack as the core/distribution layer. There are several 2960X switches with cross-stack EtherChannels to the 3650's. After enabling Rapid-PVST, best practice would be to configure the root bridge. The question is, would it be sufficient to configure the stack to be the Root Primary and not configure a secondary, based on a failure of the stack master switch would elect the slave to become the stack master and effectively become the root bridge?
Thanks
Tony

Disclaimer
The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
Liability Disclaimer
In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
Posting
BTW, don't know if issue also applies to 3650 stacks, but on 3750 stacks, if stack master fails, I believe your port channels will reset because, by default, stack's MAC changes. However (again at least for 3750s), the stack can be configured to retain the original master MAC.

Removing 4 out of 6 switches in a switch stack

Hi all,
A very simple question for the group (I hope!) regarding 3750 switch stacks.
I've inherited a stack of 6 3750 switches. I need to reduce this to two. All of my active connections have been moved over to the remaining two switches I plan to keep.
Here is the output of the show switch
DASW01_4STACK#sh switch
Switch/Stack Mac Address : 001c.b1d9.cb80
                                           H/W   Current
Switch# Role   Mac Address     Priority Version State
1       Member 0019.2f07.ab80     1      0       Ready
*2       Master 001c.b1d9.cb80     1      0       Ready
3       Member 001c.b1e1.5d80     1      0       Ready
4       Member 001c.b1f6.4a80     1      0       Ready
5       Member 0023.eabd.3500     1      0       Ready
6       Member 001c.0ea1.be80     13     0       Ready
The two switches I want to keep are # 5 and #6.
As you can see, for some reason the master is not on switch 6 even though it has the highest priority. All the switches are connected together with the proper redundant stack cables.
I've never worked with stacks before but would the actions be as simple as.
1. Backup configs!
2. Turn off switches 1 to 4 one at a time an allow for the stack to stabilize after each switch is powered down.
3. Verify that switch 6 is now the master and everything still works.
4. Turn off switch 5 & 6 and connect the stack cables of each switch to each other for redundancy (currently only one cable connects switch 5&6)
5. Turn on switch 5 & 6
Am I missing anything?
Thank you!
-Pete

Disclaimer
The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
Liability Disclaimer
In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
Posting
Leo Laohoo wrote:"Power off the switch that is to be added."But Joseph you are not ADDING switches. You are REMOVING switches from a stack and re-cabling.If one was adding a new switch, then yes, I recommend the new switch is to be powered OFF before connect the stacking cable.
Leo, an excellent point!
Powering of the switch, when "adding" to the stack, no doubt gets it to initiate itself as a stack member.
Re-cabling existing stacks members, shouldn't need that, but the question then is whether the hardware (stack connections) were designed for making "hot" (i.e. both sides powered on) connections. If they are, then you're correct, no need to power off switch 5.

SNMP for Catalyst 500G

Is it possible to configure catalyst 500G ports using SNMP? (How ?)
Or SNMP for this switch can be used only for monitoring purpose?

SNMP would be used only for monitoring.
Cisco Network Assitance tool is used which uses port 80 http.

Ensure HA for servers on stacked Cisco 3750g Switches?

Please bear with me. I'm fairly new to the sys admin world. Though I have a grasp on Cisco Switch technology, the grasp is certainly not solid. I've been tasked by my IT director with finding a device-level redundancy plan for our critical systems. We have four stacked 3750g switches. How would I setup the technology so if the switch with the servers connected were to fail, the downtime would be minimized? Should I deploy a RPS2300? What about the supervisor engine? From what I understand, the supervisor engine is virtual when using stacked 3750s. Is server NIC teaming neceassary? Does the LACP protocol need to be considered? As you can see, I've got a lot of catching up to do. Ultimately, I need guidance so I'm not this plan in the wrong direction by confusing appropriate technologies.
Thanks in advance.

Disclaimer
The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
Liability Disclaimer
In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
Posting
You've already correctly identified some methods for HA with 3750s.
As you note, the stack provides "supervisor" redundancy, i.e. if stack master fails, another stack member will take over. One thing to watch for, if your stack master is running IP Services, you'll want at least one other stack member to have that IOS installed (and licensed).
Regarding hosts, ideally if they support Etherchannel/Portchannel to the stack, you can have critical hosts connected to two different stack members, so if one path fails, connectivity isn't lost to the host. For hosts that don't support that, or are not critical, you might have some "spare" VLAN ports in other stack members. I.e. if a stack member fails, manually repatch such hosts to another stack member port. (If fact, ideally, you might have one additional stack member already in the stack, so for such single connected hosts, downtime is the time it takes to repatch [then you work about replacing the failed stack member].)
On the power issue, the RPS would allow usage of a secondary power circuit and it also covers, I believe, failure of a stack member's A/C power supply (those don't fail too often, and if it does on a 3750G, you might need to replace the whole unit[?]). However, the RPS doesn't handle loss of A/C power on both paths (and when it takes over, I also recall, you need to reload the stack to revert off it). So, you might also want to consider UPS too (if other parts of the network might still be operational). Depending how you implement UPS, you might not need an RPS, for example if each stack member had its own UPS and each UPS could be reconnected to another power line.
PS:
For additional stability, if not already running it, 12.2(55)SE8 is considered, by many, as being very stable.

Stacking 3750 switches

I have a question, I have two c3750 in production alread and would like to stack them into one switch. My question is can you stack two switches that are already in production together? If so how, do I need to remove the IP address and the hostname of one then stack them? Any help would be appreciated.
Frank

Yes you will only need 1 ip and one hostname to manage the entire stack . If you want a particular switch to be the stackmaster for the stack you will need to set your priorities for the switches . Good page for 3750 stacking.
http://cisco.com/en/US/partner/products/hw/switches/ps5023/products_configuration_guide_chapter09186a00801cdee3.html

Catalyst-3750-series-switches -stack switches

Hi,
I have to show the temperature of each of the stack members in the switch. The MIB that I am using is CISCO-ENVMON-MIB ;
I am trying to parse the ciscoEnvMonTemperatureStatusDescr to get the temp instance for each switch instance.
is this the correct way?.

Here is the output from one of the standalone 3750 switch in my lab:
SW01#sh switch
Switch/Stack Mac Address : 1111.1111.1111
                                           H/W   Current
Switch# Role   Mac Address     Priority Version State
*1       Master 1111.1111.1111     1      3       Ready
SW01#sh switch stack-ring s
Stack Ring Speed        : 16G           <<<<<<<<<<<<
Stack Ring Configuration: Half        <<<<<<<<<<<<
Stack Ring Protocol     : StackWisePlus
SW01#sh switch stack-ports
Switch #    Port 1       Port 2
    1          Down         Down
SW01#
-Terry

Snmp for 3750 switch stack

Similar Messages

Maybe you are looking for