Routing

Hi All,    This may be a remedial question but do you have to advertise a local network for the BGP peering to come up? I have very little experience with BGP. Thanks in advance! Best. 

Hi ALL,I have a question about bgp advertising prefixes back to the peer which advertised the route.I am using IOS version 15.2.My topology is very simple like this:R3---------------R1--------------R2R1 belongs to AS 1,R2 and R3 belongs to AS23.R2 ad...

Hi, There are two security license for ISR G2 router: Security E-Delivery PAK & SEC No Payload Encryption E PAK. Normally will use Security E-Delivery PAK, am I right? What kind of situation will use SEC No Payload Encryption E PAK? Thank you. BR, ...

hey everyone. once again i have a new problem , that our switches have show log that mac flap on multiple interfaces. in switches spanning-tree in enable.     : spanning-tree mode rapid-pvstspanning-tree portfast default we already found that there i...

Hi, Have anyone here tried or have any idea how to run one AS on top of another AS? I would like to use my current backbone network (AS1)and run another AS (AS2) on the same infra. example:physical========RA--R1--R2---RBlogical-------R1--[AS1]--R2RA-...

Strange issue here. Cisco and the vendor are unable to help so far...Most of our layer 3 lives on core switches. However, we have  a couple sites off our WAN connected via  Cisco routers. In these offices, we can not get paging to work.I  setup a lab...

We have a single router (4331) that connects to our ISP. We do PAT (dynamic nat) to give users internet access. Now typically we'd have an OUTSIDE-IN ACL that blocks traffic from the internet. My question is, if we're using PAT and have no static 1-t...

If I execute the command "show ip bgp neighbor x.x.x.x received-routes" and the router is learning a particular route via another routing protocol with a lower cost as well, will that route be omitted from the output of that command?   For example, I...

Hi all, I have a 2951 configured with subinterfaces (for the inside networks) and NAT.Outside NAT is working just fine but inside NAT is not working and I have no clue...configs:interface GigabitEthernet0/0 ip address xxx.xxx.xxx.xxx 255.255.255.252 ...

Hello, we currently have our internet router connected to 1 ISP.  We would like to purchase a second router and have it connect to a different ISP.   The 2 ISPs will not talk iBGP, but our routers will.  The attached diagram shows what the topology w...