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Questions tagged [cisco]

Cisco is a provider of switches and routers to commercial consumers. Cisco devices run IOS or NX-OS operating systems. This is a generic tag to be used when no more specific tags are available. See the partial list of tags in the full Tag Wiki.

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15 views

Installing ydk-py in Cisco XE release note (CSR1000v)

I'm trying to install Python SDK generated from YANG data models into CSR 1000v router in AWS that runs Guestshell which is a virtualized Linux-based environment, designed to run custom Linux ...
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0answers
10 views

How to Measuring loads bandwidth on Cisco Router interfaces?

Can we measure loads (bandwidth) on an interface of a Cisco router? Let's say we have 2 routers, and both are connected to each other via GRE tunnel that goes through the internet. Can I measure the ...
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0answers
38 views

How to route traffic from VPC to another by following set of constraints in AWS

Here I have the scenario shown in the figure below, in which there are 3 VPCs. Each VPC hosts 1 VM and CSR 1000v, except VPC2 where there is only CSR. CSRs of both VPCs are able to communicate with ...
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0answers
43 views

Intel x550 not negotiating to 10Gb

We have a machine with an Intel x550 and a Cisco Nexus N9K-C9372-PX-E. For whatever reason, it will only negotiate at 1Gb, even though it is 10Gb capable and is being plugged into a 10Gb switch. This ...
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0answers
11 views

Implementing a scenario in AWS that involves CSR 1000v and network functions

I have the following scenario, which I would like to have it in AWS. The model contains three layers, each layer has its nodes and connections as basic network elements. In the functional layer ...
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0answers
4 views

Why do Cisco IOS switches send packets to DHCP servers with zero giaddr field when DHCP snooping is on?

I recently troubleshooted a network where the switch had DHCP snooping turned on and even though the router which was acting as a DHCP server was connected to a trusted port, the client wasn't able to ...
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0answers
22 views

ssh connection lost when creating a vpn connection on remote

I am trying to establish a vpn tunnel between 2 networks. network A hosts a private git server. network B needs to access the git server. Here are the steps done: 1. creates a vpn connection to a ...
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0answers
7 views

How to do a debung ip policy for a specific source? [on hold]

I would like to do a debug to see which PBR my PC is matching and the action that is being taking. With the debung ip policy I can see the action that is being taking for the next hope,but I would ...
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1answer
99 views

Cisco Switch: Limit mgmt access to specific VLAN

I want to limit the access to the management console of my cisco switches. My idea was to only allow clients of a specific vlan to access it. In my current physical setup I have three unstacked cisco ...
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0answers
20 views

How to route differently, with default route in place?

I have a setup as below: PC A --> Microtik --> C3750 --> ISP router Both Microtik & C3750 is configured with 0.0.0.0 0.0.0.0 ISP IP static route. This means that traffic from PC A will go to ...
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1answer
48 views

How to configure managed switch

The work environment is shown below. I want to install two new managed switches (cisco SG250-8) for the ones shown in green. I configuered the switches with one vlan and gave them the ip address 192....
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13 views

CISCO SF200-24 looking for release 1.3.5

I bought a CISCO switch SF200-24 and would like to upgrade to latest release 1.4.9.4 from release 1.3.1 First I upgraded boot release to 1.3.5.06 and went fine, then I do understand I need to upgrade ...
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1answer
51 views

Does OSPF routing protocol works in AWS?

I'm having troubles with finding the neighbors after the IPIP tunnels configurations where I have 4 VPCs and deployed there 4 CSR routers (for more details about the configuration, I posted yesterday ...
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1answer
26 views

I lost ssh connection to my instance CSR 1000v AWS

I erased the configuration of my CSR 1000v bu using the CLI command wr erase and there reload. After that, I lost the SSH connection. I was not able to connect to the instance even though it has a ...
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1answer
27 views

cisco 4948 IGMP flooding on all ports

everyone Having trouble with multicast on cisco WS-C4948-10GE (MPC8540). I have two switches running: System image file is "bootflash:cat4000-i5k91s-mz.122-25.EWA9.bin" and System image file is "...
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0answers
24 views

How to create interfaces for CSR 1000v for GRE tunnels?

Well, my idea is to connect to 4 CSR 1000v routers in different VPC (without VPC peering). I've basically finished with everything with the pre-configuration creating VPCs, subnets IGW, modifying ...
2
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1answer
76 views

How to do routing between the instances in AWS using Route Table?

I have built the following model below. There are 4 instances which have CSR 1000v router deployed in 4 created subnets (green CIDR) that have 28 as a mask. I have created other subnets in order to ...
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0answers
18 views

If an echo from tunnel interface IP is successful but an echo from the tunnel interface source fails, is that an outage with ISP?

Trying to track down an outage. Our Cisco ASR has a tunnel configured as IP: 100.64.#.# Source: 192.#.#.# (Amazon DX block, this address is also configured as a loopback on another interface) ...
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1answer
61 views

1 bridge - 1 vNIC - Multi VLAN

I have an issue that I can't resolve since a few weeks... I present to you the configuration for understanding: I have a NAS Qnap that it makes Virtualization (qemy/kvm). The OS of the Qnap is CentOS....
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0answers
21 views

Logs stopped on FTP server

I have FTP server which is receiving logs from Cisco-WSA, but suddenly the logs stopped, Checked the vsftpd service it's up and running, restarted it multiple times too. Checked telnet on ftp ...
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0answers
21 views

why traceroute shows only one direct connection instead of 2?

I have got 4 CSR Cisco 1000v deployed in VMs on AWS. I could ping the Primary network interface of each VM from any instance in the network, but when I try traceroute it is not successful. The VMs ...
2
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1answer
64 views

How to Virtual static routing in CSR 1000v on AWS?

I'm trying to do static routing for 2 Cisco CSR 1000v routers which are deployed on 3 VMs in AWS, but it didn't work. I configured correctly 2 interfaces of both routers, but when I tried to ping the ...
2
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1answer
75 views

How to add a physical connections to Cisco CSR 1000 in AWS?

I deployed 2 Cisco CSR 1000 routers in one VPC-1 at a region A, and at region B I deployed another one. I would like to make a physical connection between these 3 routers. Also, I tried to ping ...
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1answer
70 views

Can't find Cisco CSR1000v image for deploying in GCP

I would like to deploy Cisco CSR1000v on VM instance but I cannot find it among the OS images in GCP, neither custom images and marketplace. I'm following the tutorial below: https://www.cisco.com/c/...
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1answer
25 views

How do I exclude return traffic from my ACL?

I have this network topology. What I try to achieve is: Deny access from Network 172.28.224.0 to Network 172.28.226.208. But the other way around it should work. 172.28.226.208 should be allowed to ...
0
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1answer
17 views

How can I disallow access to a specific ip within a LAN?

My Network topology looks like this: PC1------- PC2-------Switch--------Router-PT PC3-------2960-24 PC4------- What I try to accomplish is: No PC is allowed to ping PC3, but PC3 is allowed to ping ...
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0answers
25 views

How can I advertise routes in BIRD?

I am trying to advertise some routes from my bird server to my Cisco router, I already have a neighbor relationship with my Cisco router, but I am not learning the advertisement networks from bird. My ...
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0answers
36 views

OSPF isn't working in bird

I trying to configure a simple point-to-point OSPF between a linux server and a cisco router, but didn't work... I can see the hello going from the router to the server,but I can't see any hello from ...
0
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1answer
276 views

Strongswan: “received NO_PROPOSAL_CHOSEN error notify” while connecting to Cisco Router

I'm trying to establish an ipsec connection from a raspberry pi with Strongswan (Linux strongSwan U5.5.1/K4.14.50+) to a Cisco Router. This is the Strongswan output: root@raspberrypi:~# ipsec up ...
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2answers
51 views

Basic QoS bandwidth for all devices/clients

I have an IP network that has about 500+ clients on the network at any given time. The network uses a Cisco 1941 router as it's gateway, and has 5 different subnets. The network also has 2 DCs, a ...
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0answers
37 views

Multiple routes from router advertisements

Consider the following simplified setup: All devices are IPv6 enabled. Interfaces are configured in a way that we have 3 networks as shown. Router advertisments are enabled on both routers R1 & ...
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1answer
32 views

Azure VPN Site to Site VPN (Azure to Cisco)

I configured a VPN IP Sec tunnel from VPN gateway in Azure to Cisco Router to customer end. created vpn gateway created local gateway config and connected successfully to a cisco router at customer ...
4
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1answer
126 views

Asterisk ignoring incoming calls with caller id

I have an Asterisk system which has been functioning perfectly well for about six months and now we want to add incoming caller id. We got the service from our phone company; we see the caller ID ...
0
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1answer
60 views

Can not create sub-interface in Cisco CGR 1240

I follow a tutorial, there shows the method of create sub-interface: but in my actual situation, I can not do this: Router(config)#interface gigabitEthernet 2/1.100 ...
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0answers
66 views

Cisco Switch QoS for Voice

I have a Cisco 300 switch where I am using IOS/CLI to configure Quality of Service. The goal is to make sure that voice traffic is always prioritized over data. When I go in to configure the policy ...
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0answers
55 views

Traffic burst in cascading Cisco switch configuration

I'm using 2 Cisco Catalyst 3850 switches (Sw1, Sw2) and 3 Cisco Nexus switches (Sw3, Sw4, Sw5) as part of my internal network, connected in the manner below (A, B, C, D, E, F represent 10G ports, i.e. ...
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0answers
30 views

Printing from wireless clients to LAN printer

BACKGROUND I experience a massive problem with my RICOH MP C4504 printer connected to a LAN cable. It fails to print (there is no error message, looks like it never reaches the printer) while I am ...
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0answers
23 views

Packets not routed via IPSec tunnels

I'm running Brocade vRouter 5600 based on Vyatta. I've got 2 gateways running in high availability, and they've run in a couple of years working fine. I'm trying to setup a VPN/IPSec on one of my ...
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0answers
42 views

CISCO 2960-X mac filtering issue (mac Blocked even it is permitted)

I have a weird issue, I created a mac access-list with the list of all permitted mac-addresses. It is working on all except one machine, once the access list is configured on interface, the connection ...
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1answer
100 views

Cisco Switch Port Routing

There's a Cisco 3560-24PS-S, and I need to configure it. I'm not a certified network expert, but I have some basic understanding of how the switches and routers work. The plan is to connect a BMS ...
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0answers
26 views

Difference between Cisco Nexus 3064X vs 3064PQ?

I am specifying some refurbished hardware for use in a test lab but am struggling to find the difference between the Nexus 3064PQ and 3064X. Looking for the 3064 which has 48 x 10Gbe SFP ports and 4 ...
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0answers
47 views

Configuration Backup in JUNOS using TFTP

Is there any way to auto backup in Junos using TFTP like Cisco.. I can't find any specific documentation like this.. I have already did it in CISCO XR router by using those command: (config)#...
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0answers
24 views

cisco 881 double nat (gre tunnel)

I have cisco 881 and I would like to have double NAT. Also I need to have GRE tunnel. I set up next lab (look at picture topology). I can set up NAT from 192.168.0.0/24 to 192.168.13.0/24 interface ...
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1answer
127 views

OSPF - default-information originate : multiple routers

I receive a default route via iBGP from R1. On both R2 and R3 I have default-information originate configured. On R4 I only see one default route in the OSPF database; either to R2 or R3. When I ...
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0answers
9 views

How exactly wifi controller manage users between access points?

There are a lot of WiFi controllers on a market. And I think all or most of them work the same way. One of the important features of the controller is that they somehow make it possible for users ...
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1answer
51 views

Cisco AIR-CAP702W-K9 enable lan ports

The 702w's have four LAN ports which are disabled by default. I'm trying, on the autonomous image (15.3(3)JAB), to enable the ports. I've tried following the official guide from Cisco, but fail to ...
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0answers
61 views

List all p2p interfaces in Cisco nexus

I am trying to list all p2p interfaces in a Cisco nexus device, but I cannot find the command. I have tried to look at the command reference but it does not show any p2p interface command. I have used ...
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0answers
33 views

Two ISPs for two different VLANs with CISCO ASA

I am deploying a CISCO ASA 5506X as part of larger network segmentation and cleanup to improve security. Currently we have two SOHO routers connecting to two different ISPs. One handles strictly ...
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0answers
37 views

Cisco SNMP vmVlan OID result

I sent vmVlan (1.3.6.1.4.1.9.9.68.1.2.2.1.2) OID to a Cisco 3750 switch. This is list of vlans: Take care of interface FastEthernet 2/0/45 - 48. These interfaces isn't in response list of vmVlan. ...
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0answers
14 views

Is there an easy way (via CLI) to identify the WLC an AP is connected to?

this is my current situation: In our Company we use Cisco Acess Point and Wireless Controllers in various Countries. Due to a license-shortage we have more and more APs registered to WLCs in different ...