Routing

Hello all, I am trying to apply this extended access-list  to my router to permit the selected ports and deny the rest but my emails are not sending outside, all emails are stuck in the queue. If I remove the access-list, all emails goes freely. What...

Hello.  I am hoping someone can help me understand this. Per some Cisco product documentation, the ASR1K router with an ESP-10 has the following performance characteristics:"System Bandwidth: 10Gbps""Performance: 17mpps" What is the difference in the...

Hello everyone!I'm having some concerns regarding to our core switch replacements.We have 2 3550s core switch and 6 2960s/2950s and a couple of dozens servers, NAS drives, etc...The core switches will be replaced with 3750 with ip image license on th...

Dears, We are having an issue when we connect to CCTV (located at a remote site with a public ip) from our office network. The issue only happens when the traffic is passing through the Cisco router. If we connect our PC to the service provider modem...

Greetings! I'm attempting to set up a Frame Relay (FR) lab with a few routers, and I'm running into some trouble.  The router I'm using as the FR switch is a 3825, which has two VWIC2-2MFT-T1/E1 cards installed.  The three other routers are 1841s wit...

I want to give my level 1 support staff the ability to shutdown access interfaces but not trunk mode interface or vlan interfaces.can this be done with priviledge commands. This is what i have so farprivilege interface level 7 descprivilege interface...

Hi All,A cisco 2811 router which not booting from newly uploaded IOS in flash after successfully copied it boot from the old IOS and also change boot order    

Hi everyone, We have historically used OSPF to customers (In VRF's), so they can dynamically advertise there LAN subnets back to our PE's  - We have a new customer that is wanting to run BGP to us instead of OSPF. For OSPF, we would do something like...

Hello,Where does the serial interface and T1 controller fall under the OSI model.  Also does the VWIC have several controllers and serial interfaces or is it one T1 controller per VWIC as well as serial interface?

I setup this Cisco 1921 with three vlans; vlan2, vlan3, vlan11 & vlan 3500. Vlan 3500 is my management vlan and I am currently not able to ping or access any of the management devices. The switch where all of the devices are connected has the uplink ...

HiI was just shipped some 30PWS-C2960X-24PS-L  4 had the twist lock power cables and the remainder had the standard power cable. These switches will be used to support IP Phones and possible some Access Points using PoE.  Is the 240v really necessary...

Hi to all,I need advice how issue with rommon upgrade on our ASR 1002 device can be resolved.Issue:We tried to upgrade IOS on our ASR device by upgrading firstly rommon and then IOS.After upgrading rommon, route processor remained with old rommon. We...