Switching

On a 3750 switch, IOS 12.2(25)SEE2 (also 12.2(53)SE1, to which we're slowly moving), IP Services feature set.  Routed Layer 3 access.We're looking at implementing IGMP v3 in our standard configuration.  The documentation says that IGMP v3 join/leave ...

Do you happen to have or direct me to a config of OSPF and loopback interface on  layer3 switch (WS-C3560G-24TS) using VLAN. I know how to do on a router with Serial and ethernet interface, but not on a switch where i have to use the Vlan interface t...

Getting the NAT: % Invalid Key lengths for tree insertion message on (5) 2800 routers in different locations running IOS 124.  It is not impacting production. Checked cisco.com and did not come up with anything. Does anyone have any feedback/info reg...

Hi AllI have installed a WS-X6708-10GE module into a 6509 chassis running a WS-SUP720-3BXL supervisor.  As per the cisco documentation, if I install this line card without powering down the switch, the DFC card will not be powered up (OIR is not supp...

I am looking at moving from Sup 6E to 7 mainly for 10G support and NetFlow.  Backplane doubles from 32 to 64 it looks like.  Is there a way I can se if the existing 32G backplane is under stress to see if a backplane upgrade is needed regardless now?

hi to allI was doing intervlan routing ,,, i used 2600 router and 2900 seriesi create two vlan... vlan 2 and vlan 3on router i create three subinterfaces.. .interface 0/0.1 for vlan 1 ip address 192.168.1.1 255.255.255.0 interface 0/0.2 for vlan 2 ip...

Hi, I'm investigating if it is necessary to configure extra queuing options, other than the default on uplink ports which have to trust dscp.For instance the interface below supports 1p3qt scheduling, which I think it will be active when enabling mls...

Hello everyone,I have had a weird symptom on Catalyst 3560-X.Two Catalyst 3560-X 12.2(55)SE are connected by two cables with dot1q trunk.3560-X #1 Gi0/21 ----- Gi0/21 3560-X #23560-X #1 Gi0/22 ----- Gi0/22 3560-X #2Both 3650-X (#1 and #2) are configu...

I am receiving the following errors on our Cisco 4006 switch.UDP bad checksum probable src IP:port 10.x.x.x:65155 dest IP:port 10.y.y.y:161 length 768Can anyone tell me what this error mean and what do I need to do solve any issues?Mali0998

Hi All,As we all know mpls frame size is 1512  byte and normally our switch(3550,3560)support 1500 byte mtu size.then how it accept giant mtu and process it further especially in case of MPLS.thanks a lot.

hi all how to select the best among types switches, routers ?I would to select of the best between two type of switches and another two type routers .- compare between switch cisco 1900 ,2940,2948-compare between routers cisco 2501 and 2620so please ...

Hello All,Currently I Have all the hosts on my network from multiple VLANS getting IP addresses from the DHCP server, every host has a mac-->ip reservation.This is becoming a management headache, the users move constantly and the DHCP server won’t sh...