Switching

I am having an issue trying to configure ip dhcp snooping. I have a windows dhcp server on my server room switch (6500). All of my vlan interfaces are on my core (6500) with helper ip addresses. I have enabled snooping, trusted the port the dhcp s...

Hi all,I have two routers, Router-A directly connected Router-B if I given shutdown to an interface in Router-A which is going to connect Router-B, now what will happen, if I issue show interface on Router-B whats output would I see on the interface ...

Hi :I bought a Cisco SB 101 as a small business/home router and promptly burned the wrong settings into it. The documentation instructs you how to burn in an IP address, so I did, but my broadband provider (Mediacom) said that won't work. That it m...

One of our switches keeps generating an error message pasted below every a couple of minutes. And I did some research on Cisco website; it recommends that no action is to be done. But I still think there is anything I need to do to get rid of this me...

anyone aware of input cos/dscp markings on a .1q trunk port using ACLs?

I recently upgraded my IOS (3750), and everything was fine. Now though when I try to boot I get the following:Base ethernet MAC Address: Xmodem file system is available.The password-recovery mechanism is enabled.Initializing Flash...flashfs[0]: 3 fil...

Are there interim releases to which I should upgrade before upgrading to current ios 12.1.22-EA10?

Hello group,I'm just getting back into routing after a 5 year absence. I'm looking for some sanity checks and a bit of help:The goal is to connect two internal LANs using a 2651 then control the traffic with access lists.I have two 10/100 Ethernet po...

I am using a CISCO 3550 Multilayer switch with theIOS version 12.1(11)EA1. I am configuring Virutal link with the following commands :**********************************************cisc0(config)#router ospf 10 cisco(config-router)# area 1.1.1.1 virtua...

I have cat 6509 with MSFC．MSFC is used to route traffic between VLANs. there are ip phones on the 6509. Myq question is do I need to configure qos on msfc, or just need configure qos on supervisor?

Does anybody know that L3 switch can put the voice packets into the proper input queuing based on dscp? As I know that L2 switch does this based on cos value. I have 2821 GW connects to 6500 IOS image switch. It's not dot1q trunk. so there is no cos....

I am setting up DHCP Snooping and I am looking at the configuration guide for the 6500 series switch. These are the steps that they show:Step 1 Add DHCP snooping to the VACL.set security acl ip acl_name permit dhcp-snoopingStep 2 Configure the VACL t...

Hello all, i'm trying to get the dot1p tagged frames on my wireshark , these frames are going out of my 440x controller that is connected through a trunk to my 3750 switch. When I enter the following CLIs:SW-3750-2(config)#monitor session 1 source in...

Hi,I wan to know if the safety certification at the catalyst 3560 is the same to catalyst 3750?im looking at the table 5 in specification , 3560 is certified with first edition, and 3750 with third edition.i really want to know if the catalyst 356...