Hi expertI want to change google DNS server (8.8.8.8 and 8.8.4.4) to openDNS 208.67.222.222 for all my network. so I made this configuration in my router to forward all google DNS requests to openDNS servers.# ip route 8.8.8.8 255.255.255.255 208.67....
Forum Posts
Resolved! DMVPN and OSPF backup tunnel routing
I am in the beginning phase where a customer wants to change their routing protocol from EIGRP to OSPF on their network. I noticed that they have a DMVPN setup with about 25 sites each with a single tunnel interface going back to their respective wan...
Good afternoon,I am working on Packet Tracer to be able to send packets from computers to each other on different vlans with IPv6, on IPv4 it works as it should, you can ping other computers and they return an echo message but with IPv6 I am not bein...
I am planning the migration of a Network 172.16.0.0 Mask 255.255.0.0 to a VLSM VLANS so that I get the following topology:A New range VLSM Subnet of 172.16.0.0/19 for the Actual range of IPs 172.16.0.0 to 172.16.31.254Many Subnets of VLSM CIDR 22 be...
Hey folks, I’m not as up on the router portfolio lately, but I’ve seen some recommendations to use the ASR 1001 in traditional home situations.I have a 1G/100M cable modem connection with an Arris Surfboard SB8200 (DOCSIS 3.1) and would love to tinke...
I have two routers, name router0 and router1, that are connected to a switch on ports FA01/1 and FA0/2 respectively. Now lets say this network has and address of 201.201.201.0/24. DJMOLDINGWould the IP host address of both router interfaces that conn...
Resolved! RSP-440-TR DRAM Problem
Hi I was performing a firmware upgrade to my ASR9006 RSP-440-TR using turboboot. But the process fail due to no enough memory available. The RSP-440-TR it suppose to have 6GB of DRAM but it says that have 4GB. I start to receive multiples error and u...
Hi All(Reposting this as I would like to try and achieve an example, using my configuration below, of how I can achieve NAT failover for my Cisco ISR 4431, now I am introducing a new unit for failover)I have a Cisco ISR in live production, and we hav...
Hello Everyone, I am working on an issue involving redundant routing, where multiple sites are advertising routes to the same third-party vendor subnets via BGP, but pointing to different next-hop addresses for redundancy. To make the backup routes l...
Resolved! ASR-920-4SZ-A
Hi,I will have to upgrade several ASR920 routers for our customer and i'm wondering if anybody had any issues with the upgrade procedure. Lately I had a couple of bad experiences with upgrading Cisco equipment, so I'm taking all the precautions I can...
Hi,we are planning to apply QOS for internet traffic on our ISP routers. Does this help in improving the latency, jitter and delay for teams and webex calls and video? if so, pls help with the config. My internet circuit BW is 1Gig. Router model is I...
Resolved! OSPF LSA 3
Hello,Can somebody explain to me why the below question has that answer?xFrom my understanding, the ABR creates type 3 LSA. So a type 3 LSA received from a nonbackbone area will be received in area 0. Further, the ABR generates a new type 3 LSA for o...
Hello guysI run BGP, some routers has routes and some others shows this log message, Please detail common errors occurs in BGP in reply.*May 11 19:59:57.942: %BGP_SESSION-5-ADJCHANGE: neighbor 172.31.96.2 IPv4 Unicast topologybase removed from sessio...
Hello guysWhat parameters should match and what parameters shouldn't match between BGP peers for a successful BGP implementation?What is the important thing in BGP ?Also Please Explain what is BGP Flapping ?Thank you
HiI have the following questionsMy company uses a cisco system including core to switch, the user system when accessing the internet will use DNS managed by ADMost of the departments use the internet but there are a few rooms that do not use the inte...
