Switching

I can't seem to grasp the sheer concept of pim sparse dense mode.   Documentation says that an enabled interface in pim sparse dense mode will use dense mode for dense groups and sparse mode for sparse group.  It says that ip pim sparse dense mode ca...

Hello Guysi am practising for ccnp,ccvp and ccsp and i am using dynampis but some command does dont supported when it comes to make the mantioned router to support as a switch.can any one help me out on this? or any IOS between those that can support...

i have switch 2950.when i want enable fastinterface on this switch i saw this message.switch#configuer tswitch(config)#interface fastinterface 0/1switch(config-fa)#no shutdownfa 0/1 can't be brought up becouse it failed post loopback test.please help...

Hello allplease check attached tcpdump; trying to troubleshoot communication between two hosts, not sure where to start. Regards,

Hi,I just can't seem to understand this. I have 2x switches and 2x routers.R1, has vlan 10, 20, and 50 configured on it.R2, has vlan 30 only on itS1 is trunked to R1 and carries vlan 20 for switch management, and vlan 50 for serversR2 is trunked to R...

Hi Everyone,Just a quick question on the support for ARP optimization in SXI throttle for 6500. I know that it is listed as unsupported feature in SXH throttle.Any help is appreciated.Regards,

We are using a Cisco 871 in our data center, which is setup as follows:- FastEthernet0 port on the Cisco 871 (192.168.1.1) connects to an unmanaged switch, which is used to connect all of our LAN devices to the Cisco- The WAN port on the Cisco connec...

Hi!I'm having problems to analyse the root-cause of the problem listed below.*Mar  1 00:23:00.144: %LINEPROTO-5-UPDOWN: Line protocol on Interface TenGigabitEthernet0/1, changed state to up*Mar  1 00:23:00.261: %LINEPROTO-5-UPDOWN: Line protocol on I...

HelloI desire to know whether the supervisor 6E for a chassis 4507R support redundancy using SSO, what is the timing for switching to the standby supervisor 6E???Additionally, is it possible configure an etherchannel using one port of 10GE active sup...

Hi,I've connected 3 x 3560 switches in a lab.  Switch 1 is in VTP server mode and the other 2 are clients and the VTP domain is working fine. On switch 1 I have set the trunk to switch 2 to use native vlan 99 and on all the other trunk ports on each ...

All,I've only had this issue twice, but it's enough to concern me. I was doing some maintenance and checking on my Catalyst 4507 when all of a sudden the switch threw a ton of messages at me, and proceeded to reload. The only one that I could see was...

I have two 6509's at the core of our network.  They are both running at about 30% constantly when displaying a sho proc cpu i get this sho proc cpu | ex 0.00CPU utilization for five seconds: 30%/20%; one minute: 29%; five minutes: 30% PID Runtime(ms)...

hi all,I have a router and a link toward a transceiver (copper/fiber) with the function "link pass through" but it's not possible to manage the transceiver and mirroring a port for a probe.So I think to use a switch with GBIC modul but i don't know h...