Search results for query: *

I have a cisco 1811 connected to a wideband modem. I purchased a block of public IP addresses from for some web servers on site. So I go to set it up using reverse nat like I normally would and nothing works. Turns out that on the ISPs side everything is operating at Layer 2, so the public IP...

I have never set up a GRE Tunnel before so I was hoping someone could look over my configs and tell me if I have grasped all the concepts correctly. What I want is for regular public internet traffic in each site to still be able to go out the T1, but then to route all the private traffic...

I have a branch office that has a basic consumer aDSL line from Verizon. The modem that Verizon provides (other than just being cheap and useless), will only do NAT for devices on the same subnet as it. To fix this, I had a spare 1811 in the office and I just plugged the modem into one of the...

I have a PTP line between two buildings with a 1800 series Cisco on each end. I graph information from each router using snmp. Lately I am seeing packet discards on my interface graphs. I think this problem is due to overstuffing, but I'm not certain. What is a good method of figuring out...

I've been reading about your basic QoS setup for VOIP on cisco IOS and I have a question. In the examples I tend to find they say to use a method similar to this: For SIP/IAX/IAX2: !signaling traffic access-list 101 permit udp any any eq 4569 access-list 101 permit udp any any eq 5036...

I have two buildings, lets call them A and B. The buildings are connected by a T1 PTP. Each building also has a few public internet gateways, so all the users in Building A reach the internet through the gateways in Building A and vice-versa. Occasionally, the PTP between the buildings goes...

I have a 2950 and I got an error in the log the other day that said: 2w3d: %SPANTREE-2-LOOPGUARD_BLOCK: Loop guard blocking port GigabitEthernet0/1 on VLAN0014. Now why I find this weird, other than the fact that there was no loop and loopguard unblocked the port a few seconds later, is that...

This is the first time I've tried to use wireless on a Cisco Router and everything seems to be working fine except DHCP. The DHCP server is on a different subnet, so I put in a helper-address, but that has no effect. I also tried making the 1811 the DHCP server, but that didn't work either...