IT Answers » Cisco 3750

Image upgrade

Monkez — Wed, 14 Mar 2012 20:23:08 +0000

Hi all

I want to upgrade the image of cisco switch 3750 12 S from c3750-ipbasek9-mz.122-55.SE5.bin to c3750-ipservicesk9-mz.122-55.SE5.bin so my question is if I bought one image can I install it to more than one switch same model.

Thanks

Netgear 7328s interoperability with the Cisco 3750 switch

Djsizzle — Tue, 11 Oct 2011 09:22:16 +0000

1.Is this netgear switch interoperable with the cisco 3750 switch. the cisco 3750 acts as the distributin switch in this organisation while the netgear switch is the access layer switch. would there be any issues in configuring the vlans and other configs that might e necessary?

2. which is better as the core, the cisco 3945 router or the netgear fvx358?
Answers with reasons please!

Outdiscard Errors

Jlymn — Fri, 17 Jun 2011 09:31:52 +0000

I’m seeing a lot of outdiscard errors on a port, but bandwidth used is not excessive , speed and duplex are 1000 full. I can’t see what could be causing the problem. There are no other errors on the port to point to cable issue etc – any idea what could be causing it?

Port Align-Err FCS-Err Xmit-Err Rcv-Err UnderSize OutDiscards Gi1/0/1 0 0 0 0 0 15457245

Cisco 3750 – EIGRP not on common subnet problen

Jlymn — Tue, 24 May 2011 14:43:56 +0000

I’m getting lots of messages on a router IGRP-IPv4:(50)(Default-IP-Routing-Table:50): Neighbor 10.13.1.251 not on common subnet for Vlan11

i tried to ping but 10.13.1.251 doesnt respond

show ip route shows 10.13.1.251 is directly connected on Vlan1. This must be off one of the trunk ports but how can i find out which port this neighbor connects on so i can fix the problem?

vlan 11 is 10.20.1.0 255.255.255.0.

Vlan 1 is 10.13.1.0 255.255.255.0.

So something is misconfigured with wrong ip address, but i can’t see what it is or where it connects to be able to fix. If i could find MAC address of device i could trace to a port and console on – any ideas?

Thanks

DHCP by Windows Server 2008 between VLANS

OrlandoD — Thu, 19 May 2011 15:55:47 +0000

Hi, I’d like to know how to configure DHCP info to be passed through multiple VLANS to issue addresses to respective clients in all subnets. Right now I am thinking I need to have all proper scopes defined on the dhcp and i would also put the server (which is the AD) in the management VLAN which can be accessed by all devices. I want to know if this is correct or if there is some other way to accomplish this. Thank you

Cisco 4506 switch object group

Itzarul — Tue, 30 Nov 2010 09:22:10 +0000

Dear All, Any one tell me is it poosible to object group based ACl in Cisco 4506 and 3750 switches. Also please specify the IOS version that supports Object group in ACL.

Free IT Book: Microsoft Windows 7 Administrator’s Reference

MelanieYarbrough — Mon, 08 Nov 2010 17:50:40 +0000

Question Edited by Serena3

Packet loss in a Cisco 3750 stack

Labnuke99 — Fri, 05 Nov 2010 20:22:56 +0000

I am seeing occasional packet loss in a Cisco 3750 switch stack. There are 5 switches in the stack. The client is on switch 5 and the server is on switch 4. The client is on a separate vlan from the server. I am not seeing any errors on the ports or VLANS or NIC’s. Where should I be looking to find where the packets are getting lost? The switches are connected using the switch stack ports. I do not see evidence of flapping. The packet loss is intermittent and causes client session disconnects.

Any help is welcome!

Inter Vlan Routing

Dave530 — Sun, 25 Jul 2010 17:05:54 +0000

Hello. I have 5 vlans working on my network i.e 192.168.80.0, 81.0, 82.0, 83.0, 84.0, 85.0 . i have one core switch where all L2 switches are connected. and router is connected with L2 switch. caz its in another building so cant connect with L3 3750 switch. and i have configured 5 subinterfaces in routers and all clients has DG of its own vlan subinterface router. i have dhcp server in my vlan 81.0 . i have also configured helper address whcih is pointed to that DHCP server in 81.0 . my proxy server address is 81.20 . now the question is this that how could my clients from other vlans use internet from proxy server. caz for proxy server it must be DG. and for inter vlan routing the DG must be routers subinterface. plz help me in this regard if someone could. thanx in advance

how to configure 3750 switch to be as snooping querier

Monkez — Tue, 13 Jul 2010 15:29:14 +0000

how to configure 3750 switch to be as
snooping querier please help me and can we configure 3750 switch as snooping querier?

mail address moknez_3@hotmail.com