Switching

I have two 6509-V-E each with a Sup720/two CX4s and have established a VSS using said interfaces. I was sold two standard 6704 modules and XENPAKs to create a third link. Adding the third link does not work with the configuration attempt stating unsu...

I have a CatOS 4000 series switch that is generating the syslog message below. Does anyone have insight as to what it means?"Config Change Trap: Module 3 block changed by Link updprcs"(model 3 is a 100FX card)Thanks in advance, links are apprecaited.

Hi,I'm planning to migrate a subnet off some old kit running VRRP onto two new Catalyst 6509s with HSRP. I tried a similar change last week but had an issue with the ARP cache on some hosts not picking up the new MAC address of the HSRP VIP address, ...

Hello all,I am working on a new pppoe setup and am hoping to configure HSRP/VRRP or something else to eliminate to possibility of hardware failure. Running on a 7206vxr box with the following (pertinent) configuration:pdn enableloopback 41ip address...

Hi all. I have a catalyst 2900 switch but when i connect it to another linksys EF2S24 switch using a straight cable, the LED on both connected ports on both switch just do not light up and there is no network connectivity between both switches. If i ...

According to 4900M's datasheet, it supports 802.1s MSTP. But as far as I know, some catOS only support its own MSTP, not the standard IEEE 802.1s. Could you please advise if this new module (4900M) support it? Since we need 10G connection and 4900M s...

Hi,I'm trying to authenticate telnet accesses to my core sw 4503 but to no avail, I've tried the same config on sw 3560 amazingly worked fine.I know its straight forward config but it bugged me1- create username/password2- under line vty --> login lo...

I need to find out what is required to be able to send vlan traffic across a point to point link.Site A (Vlan 100) -> P2P Link (25Miles) -> (Vlan 100) Site BThanks!John

I am in the process of setting up a trunk port for a client. I want to allow only 4 production vlan to traverse the trunk. The rest of the vlans I want to prune off.I am shipping this trunk port to an IPS unit to inspect the traffic for mal content...

Hi We have implemented a number of L2TPV3 tunnels to backhaul some wireless links, our customer would like to run rapid spanning tree over the link as there is potentially a loop, however it seems that the BPDUs are not being sent over the link... Po...

Hello,I have about six cisco edge (Access layer)switches, all are uplinked to a cisco backbone (Core layer) switch by using the normal hierarchy design that all we know already and get used to it. Each edge switch got certain layer 2 vlans configured...

Hi ,Can any one help me on the below query plz:-I am seeing follwoing error after configuring Trunking and Ehter channeling in desirable mode between switches.SW1 & SW2 # interface FastEthernet0/7 switchport trunk encapsulation dot1q switchport mode ...

I am going to use VSS with a C3750 'Access' switch running 12.2(46)SE that supports Pagp+ for dual active detection. Regarding this topology, i have some questions: 1) Does my Etherchannel towards the C3750 stack need to be a Pagp Etherchannel ? Or c...

am having 4506 switch along with the x4418 module. if i want to connect more than 5 cisco 3750g switch to this module,how can i do it as there is only 2 uplink ports.please let me know