Switching

Hi there,I am having an issue with my 2821 (12.4(11)XW5, CCME 4.2) - it is generating ip spoof alerts on my Sonicwall TZ-170W. Every 12 minutes, my Sonicwall is picking up an IP Spoof from 169.254.98.91, port 138, to 169.254.255.255, port 138. The as...

Hello. I work at a relatively small Client site where they have about 10 production VLAN's which are routed at a Core 4506 sw with a SUPII+ blade.I do audits for protocol activity within each of these VLAN's by setting up the appropriate Port Monitor...

Hi all, can anyone please tell me how many subnets are in the address 10.112.64.0/23from the calculator its saying 10.112.64.1 - 10.112.65.254is this 2 subnets?how is it worked out so that it goes from 10.112.64.1 to 10.112.65.255 ?

i have one access switch (2960)which is connected to core switch(4506)and trunk is enabled on both the switches for connected ports, if i will remove the trunk command from my access switch and i'll put access switch connected port on core switch in...

Hi all, can anyone tell me why we have spanning tree per vlan ? and also i have heard that the most switches you can have daisy chained is 7 due to the timers, what timers are these ?

I am trying to get the switch to send interface up/down messages to the syslog server. My CatOS switch sends these messages but not my IOS. When I want to see what port a user is on I ask them to disconnect their cable but on the IOS switch I get n...

Hi there,we have Cisco6513 switches,distribution layer in HSRP.It generates ARP broadacst for each ip address of all vlans' subnets.when i captaured the packets it shows the source mac-address is MSFC's mac address for all ARP requests.Can anybody s...

Regarding catalyst 3750's, is spanning tree set by default or do I have to code for it? If so, what is the code? thanks!

I have a stack of 2 catalyst 3750 and i have this situation:#sh switch stack-portsSwitch # Port 1 Port 2-------- ------ ------1 Ok Down2 Down Ok#sh switch neighborsSwitch # Port 1 Port 2-------- ------ ------1 2 None2 None 1 I would like to know if t...

i have two cisco4506, Active and Pasive i have done vlan based HSRP on it, also i have one gateway router connected to MPLS cloud, how do i connect that single router to both the switches? with single gateway ip for both the switches

Hey you network gurus. Can you give me your opinion for the most stable L2 IOS image for models such as the 3550, 3560, and 3750? Forget feature sets, just the most overall stable releases.Thanks