Switching

We sometimes push IOS upgrades to mixed stacks of C3750E & C3750G switches via Cisco Network Assistant.  Sometimes the first switch (master switch) will reboot during the image upload before it is done.  Anyone know why that would happen?  The first ...

Hello,we have a lot of C2960, C2960S, C3750, C3750X and C3560 running either IOS 12.2.55-SEn (actually the SE9) or 15.0.2-SEn.Recently we ran into bug CSCuj03351 ('DHCP discover packets not forwarded on 2960S'), which is a duplicate of of bug CSCui65...

I have a 887VA and i'm trying to config QOS for VoIP This is what I'm trying...ip access-list extended VOIPpermit udp any any range 10000 20000permit udp any any range 5060 5062 class-map match-any VoIPmatch access-group name VOIP policy-map VOIPQOSc...

Dears, If i have 2 Nexus7k with 2 vDCs created , one for campus and the other for DC as show below :-can i have this setup(VDC Campus)N7kA----Trunk-----Bridge 1 interface---ASA1------Bridge1 interface-----IPS----Trunk--N7kA (VDC Datacenter) So basica...

What is the chance of cisco 3750x 24 port poe switch failure? is backup necessary for this ? please answer me in details.

Hi , We have issue on 2960 switch where we are seeing duplicate MAC address on switch . 4c00.829d.88bf is mac address of Distribution switch and it has two vlan 1101 and 2101 which are in trunk passed to access switch of 2960 series. But in the mac a...

 Hi All, Need your help in undergoing an Activity. I need to do replacement for failed Supervisor Engine 720 10GE (standby) on Cisco 6509 in production. We have not to do a Hot Swap, but it has to be done after powering down the Chassis. I think afte...

 Hi If the TTL value in the ip header  will stop ip looping , why the same  not implmented in the frame ?Thanks 

Hello All,I'm troubleshooting High CPU Utilization issue due to Virtual Exec Process in 3750 switches.Is there any way we can limit the data transferred from the router to the telnet session? Any help is appreciable. Regards,Thiyagu

I'm getting ready to setup OTV between two of our data centers and have a quick question.When I setup the L3 connectivity between the sites and set that interface to be the join interface, does that link also pass regular routed traffic?I'm only sett...

 I seem to be having trouble access the WAN interface from machines inside the LAN behind my RSV4000.  I'm sure there is something simple I'm missing to allow this through but after a few hours looking I just can't seem to find it.

Hi,I am trying to connect a Cisco Nexus 5548UP switch to a Cisco 2960 switch. This is the setup:Cisco Nexus 5548UP switch connected to Cisco 6500 core switchCisco Nexus 5548UP switch connected to Cisco 2960 switch WS-C2960-8TC-L on Gi 0/1Cisco 6500 s...