Routing

I have 4 vlans Vlan 1 : 192.168.1.0 Vlan 2: 192.168.2.0 Vlan 3:192.168.3.0 Vlan 4: 192.168.4.0 I want all vlans to communicate eachother and its done But now how to allow only  two computers in vlan 3 to communicate  to vlan 4 and deny rest accessin...

I have a couple questions about route tagging.  I don't currently use it but it may help with some issues.  As I understand it: BGP tags routes "automagically" with the AS number EIGRP does not tag routes unless explicitly told to OSPF does not tag ...

on which interfaces to enable root guard .....imo. it is best to enable root guard on the trunk interfaces of the root switch as on these interfaces only we connect the redundant links...am i right ?? plz correct me...

Based on the attached topology I configured area 2 as Totally NSSA. So area 2 will receive default route from R3 and R6 (ABRs). R9 (EIGRP) is advertising a default route to R7. So why that default route is not showing as LSA type 7 in R7? Thanks, Ma...

I have the following ACL statement in the running config of my 2911 router: "ip access-list extended NOSPOOF deny icmp any any" This, of course, denies all ping responses (and other ICMP). How do I change this to permit ping responses from the LAN ...

If I have a policy setup similar to what's below how do I tell the router that traffic should be shaped to say 30Mbps while still keeping priority for the traffic classes? policy-map VoipPolicy  class VoipMap    priority percent 50  class SubVoipMa...

[[{"type":"media","fid":"1327571","view_mode":"default","link_text":null,"attributes":{"alt":"router_setup.jpg","title":"Network Diagram","height":"741","width":"711","class":"image-style-none media-element file-default"}}]] I have a networking prob...

Hello, we are just in the rollout process of ASR-1002X routers. No specific or enhanced function is configured on those devices. However, I´ve recognized, that the "reload" of such a routers brings some issues, such as: 1) after entering the reload c...

Hi there, I was wondering if there is any elegant solution that allows to share the available download bandwidth (hub to spoke) of a spoke site between multiple VRFs on a DMVPN spoke router. The scenario is as follows: Each of my spoke routers implem...

Hi, We are replacing some 1841 routers with 1941 models, and we would like to transfer the HWIC 3G cards. Does anyone know if they will work in the 1941 router's EHWIC slots? I found this FAQ (http://www.cisco.com/c/en/us/products/collateral/routers/...

I have recently acquired a 1921 router and upon connecting to it via console and running the show inventory command I was surprised to see it being reported as a 1905 instead. Even a lookup on Cisco.com reports the serial number as that of a 1905 and...