Routing

ISR4431 in Controller Mode?

Ive just booted a new ISR4431 router. Its running IOS 17.5. It tells me it is in "Controller Mode". How do i make it go to plain ordinary router mode?

Resolved! c8200 PoE adapter usage

Hello guys, Anyone help, when we could use Power PoE adapter on router C8200 series?

Resolved! Cisco ISR router interface down every 2-3 days for 3 seconds issue

Hello Community!I need expert adviceWe faced the following problem.Cisco ISR router physical interface goes down for 3 seconds every 3 days and connectivity was restored without any human interventionThis issue is affecting the OSPF processNo changes...

CCNA pdf certification recover help please

Hi, i passed my CCNA certification exam on march 3 2013, i ordered my CCNA printable certificate through email, and cisco sent me a mail in which there were a url where i can download the certificate, now 2 days ago my hard disk crashed and i lost al...

Resolved! Why does VLAN 10 not reach the default gateway?

Hi, I wonder why my client with VLAN 10 can't reach the default gateway. The client is configured with an ip address and a gateway address. The switch which the client is connected to is configured to VLAN 10 on int fa0/1 The switch which is connect...

OSPF packet capture queries

I am configuring OSPF and while running packet captures I see at times hello packets are sent via unicast also I could see a few LS update packets are sent to a multicast address(as destination), may I know under what condition this happens?Thanks in...

Issue with Firewall

I've been trying to resolve this issue for about 2 days but cannot find the problem. The computer circled dark blue can ping any PC or device from the WAN (Network A and C). Network devices from A and C can do the same. There is a slight issue though...

Placement of VPN Router

Hi,We have spare router, as per management decision we have to use it as VPN router. Can you please help me where we can fit this in our topology. We want to place it between Core router (ISR-4331) and Core Firewall (FTD-2130) and Core router is curr...

VxLAN/L2VPN between Nexus and IOS switches

This should be very simple, but it's not. I want to create a l2vpn connection between a Cisco C9300 switch running IOS-XE v17.8, and a Nexus C93240 switch running NXOS v9.3(8). I have a single VLAN I want to 'stretch' between two locations, a data ...

Nexus 9508 vrrp routing question

Lets say there are two cores, 1 and 2, both with a port channel to two different switches, po10 and po20. There's a vrrp interface vlan on both c1 and 2. Shouldn't the switches on po10 and 20 be able to ping every ip on the interface vlan that is set...

Router 2051 NATing

Good day Kindly assist. What are the NAT capabilities and capacity for the 2951 router?

setting up vlans affected communication

i have a simulated network of two branches connected to a internet service provider. i set up and configured vlans in each branch but in doing so the pcs in each branch can no longer access thier web server and the isp web server. tried setting up st...

Resolved! Ethernet and VLAN overlapping

Hi,So I have a FastEthernet on my 2811 router which has 192.168.1.130 / 30 and DHCP pool which is in network 192.168.1.168 / 26. When I try to configure VLAN 10 which should have 192.168.1.169 / 26 it says that it overlaps with FastEthernet 0/0.... I...

Issues with ACL

I have been trying to limit SSH on a router and my ACL doesn't seem to be workingip access-list extended 10710 permit ip host 10.20.0.20 host 3.3.3.3 log15 permit ip host 10.20.0.20 host 4.4.4.4 log20 permit tcp host 10.20.0.20 host 4.4.4.4 eq 2225 p...