Other Network Architecture Subjects

Running various types of traffic though switches (3550 & 6509) inc PING and Application traffic. Data is transfering but the Hit counter on the relevant ACL is not incrementing? We have ensured no alternative route is available so dat must be passing...

With Etherreal I see that the switch I'm attached to (Cat 2950) sends a loop frame every 10 s to his own MAC-Address.What are these loop frames for? Any clue?

Hi,For 3550s and smaller version of switches, we used to need to use Gigastack or Fibre cables to interconnect switches for Fast Uplink.But now the 3750s have its internal stackwise ports which I can interconnect the switches. So do I need the SFP m...

There is a question about implementing the CEF technology in Catalyst 3550 series switches. I found neither proof nor disproof (at cisco.com data sheets) for the switch ASIC has its own forwarding engine (FE) and, hence, is able to perform the distri...

Hello,i have to configure 2 Routers 1841 for an IPSEC VPN. My Problem is, that on the Path between the Router is a NAT Device.On the HUB Router i can see the NAT IP Address but the Router expects the Source IP from the Spoke.Can anybody tell me what ...

Hi,I understand that for 3550, if I want to stack the switches together, I can use Gigstack (WS-3500) or Fibre (WS-5484G). But if I want to stack 5 x 3750 switches together, do I need to buy any GBICs?Thanks heaps for you guys help in advance,Hunt

I shipped a newly configured cisco 2950 switch and walked a individual through connecting switch to uplink port to router. When the user connects cable from Dlink to port1 on switch we get no activity light on port 1. I went into switch by having cro...

Everytime we entered in our TACACS configuraion the 2950 would reload. The 2950 was reporting the following errors before the TACACS config was entered.====================================%UDLD-3-UDLD_IDB_ERROR: UDLD error handling failed to get IDB ...

I dont know if anyone can help, we have an isa proxy server, each user goes to the internet via this, when making requests to the internet, do they all come from this server and only this server address would need port address translation ?thanks

I've got 2 IDENTICAL (hardware, memory, etc) 3640's with the exeception of their ROM bootstraps:3640 #1 ROM: System Bootstrap, Version 11.1(20)AA23640 #2 ROM: System Bootstrap, Version 11.1(19)AAThey both have 128MB/32MBI cannot get the older rom ver...

Is there a feature, that allows for servers (LAN 2) located in a network with RFC1918 addresses to be addressed with their real address as well with a NAT-address?The traffic flows from above (internet, net1, net2) through the device in the middle to...

Folks, We have a 6500 series switch with Sup1A in it, i see the CPU utilization is quite high and a lot of it has to do with spanning stree, would someone have any recommendations?CPU usage information:Name CPU-Usage Invocations--...

I checked the log on my 4000 switch and it was full of messages " Duplicates addessess ", and a lot of users were getting disconnected, I found that port 2/50 was not trunking, I forced the port to trunk mode and the network had a meltdown, disconnec...

I have a stack of 3 2950G-48EI. They are connected using stacking GBICs (WS-G5484). The problem is that the top switch (the one with the uplink to the network) keeps losing connectivity to the 2nd switch. A re-boot seems to fix it (or even re-seating...

on our proxy we use port 8000 for the net, would this be natted on the router to port 80 ?