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.

Filter by
Sorted by
Tagged with
0
votes
0answers
19 views

Cisco firewall rules to iptables

Is there any way to covert cisco firewall rules to iptables (preferably through a maintained library or a script)? Also what are the semantic/logical differences between them?
0
votes
0answers
17 views

Why I'm Getting "Service web-cache lost on WCCP clinet" error on cisco router?

I'm configuring wccp and squid. Here is wccp configuration or router: ip wccp web-cache redirect-list wccp-access group-list wccp-server ! interface FastEthernet1/0 ip address 10.10.10.1 255.255.255....
-2
votes
0answers
15 views

Cisco asr 1001-hx

Can't seem to figure out what the wan throughput of a cisco asr 1001-hx is? Also, I'm no cisco expert but, wanted to know if you guys have a go to cheat sheet/website that lists all the throughputs of ...
0
votes
0answers
39 views

Microsoft AD/Kerberos and non-Windows clients (RHEL and Cisco)

I currently manage a small network with mostly Win Server 2016 hosts in a standard Active Directory domain, plus a couple RHEL 7 boxes. We will be going to Win Server 2019 and RHEL 8 in the medium ...
1
vote
1answer
97 views

Configure a cisco ASA 5550 behind a modem

i have an internet box that i can setup in router mode or bridge mode. Then i have an ASA 5550, that i would like to use as a vpn server (anyconnect) + later site to site connected to another asa 5550....
0
votes
0answers
11 views
0
votes
1answer
41 views

Issue with rsyslog creating mutliple log files from a remote cisco switch

So here is our setup Server: rsyslog server - CentOS 7 Client: Cisco Catalyst C6880-X-LE /etc/rsyslog.conf from the CentOS 7 server: $ModLoad imuxsock # provides support for local system logging (e.g....
1
vote
1answer
27 views

VLAN Inner Talking

I kinda forgot about CISCO in general, it had been quite a while since I last touched packet tracer. Now I'm on the PRE-deployment phase of a network at work. Long story short. -I made 2 VLAN on CISCO ...
0
votes
1answer
67 views

Connecting an SFP+ port to a QSFP28 switch

Background - I am working with a client trying to get a new Dell R540 server onto the client's network. They provided me with a single port on their Cisco Nexus 93240YC-FX2 Switch to connect the ...
1
vote
0answers
36 views

Mac OS built-in VPN client Routing Table issues (Cisco IPSEC)

I have a Macbook Big Sur 11.5.2 and I’ve spent now quite some on this particular issue but I cannot figure it out. I need some help from people that are more expert than me on the matter. Background ...
0
votes
0answers
22 views

VoiP SIP trunk to Cisco RV345 and SG200-50 Switch epic Fail

Im having some serious trouble with VoiP phones that are sip trunked over the internet. I.E. we do not have an On Premises PBX. Every thing from the provisioning to the calls is done over the internet ...
0
votes
0answers
70 views

Cisco Access point. Freeradius. Dynamic VLAN assignment. DHCP fail to obtain address

I have a configuration from topic. Two VLAN 102 and 110. dot11 ssid test1 vlan 110 authentication open eap wifi_login authentication network-eap wifi_login authentication key-management ...
0
votes
1answer
8 views

Why CISCO-ERR-DISABLE-MIB trap does not show interface and vlan information in Icinga?

I have a cisco and a monitoring server with icinga (a.k.a. nagios, thruk). I want to receive traps from cisco and show them in icinga. But I am unable to see the interface and vlan for the errdisable ...
1
vote
0answers
83 views

Spanning tree causing packet loss between a Cisco switch C3560 and Linux server running on CentOs

I am working in a network environnement where I have some Cisco Switch WS-C3560X-48 and Linux Servers running CentOS 7.7. The linux servers are connected 3 times on my switches : one admin link, one ...
0
votes
0answers
40 views

kvm bridges: disable promiscuous mode, is it possible and is it wise?

I am a little confused as to if this is the right question, but I have a number of KVM hosts with multiple bridges on (sometimes)bonded interfaces, and each bridge is mapped to its own distinct VLAN. (...
0
votes
0answers
31 views

Cisco ASAv Ikev2 IPSec tunnel failing in phase2

We have Cisco ASAv appliance on Azure with Loadbalancer setup. while setting up IKEv2 IPSec tunnel we saw phase 1 is up and phase 2 is failing over peer ID validation, while debugging we saw that ...
0
votes
0answers
15 views

configuring ipsec with gre

I am setting up gre over isec and I have a cisco configuration. I am trying to move this cisco configuration to ubuntu and do not understand how the tunnel is setup interface local ip address x1 ...
1
vote
1answer
34 views

Can I utilize cisco router features during local to local data transmission?

Cisco router is reachable from the internet, external ports are being forwarded to different inside hosts. From external connection on port 1234, it is being forwarded to a internal host 10.0.0.1 ...
0
votes
0answers
41 views

Native VLAN (EVE-NG) Lab doesn't work like I wait for

I am studying native vlans. I created this lab (see the picture). I waited for I could from VPC3 pings to VPC. But I can't. And I can see there is a ID VLAN (100) after a SW2. My reasoning were so. ...
1
vote
0answers
25 views

Cisco RV345 SSLVPN Switch on the network cant connect to my TFTP server over VPN

I am trying to upgrade a Cisco SG200-50 switch boot code via TFTP over a VPN connection. My computer/TFTP Server is 172.21.0.3 which is the SSL VPN subnet of the Cisco RV345 router I am using. The ...
0
votes
0answers
51 views

Limiting L2TP VPN and Telnet Traffic by IP Cisco Router

I am trying to limit telnet and VPN access by IP address on Cisco 1111 Router. I have the following ACL applied to the outside interface g0/0/0 permit tcp host my.sta.tic.ip host cis.co.st.ip eq ...
0
votes
0answers
13 views

Set custom vendor extensions on Cisco Wireless Lan Controller

Is it possible to set a custom vendor extension on a Cisco WLC? (currently 8.5.161.0) In particular, I'm interested in setting Microsoft's Network Cost IE on our wireless network: https://docs....
0
votes
1answer
279 views

Ansible regex didn't match command output - Empty list -

I'am trying to get the list of the device ID and the list of the port Id with ansible with regex but i get an empty list, below the output that i'am trying to parse it : Device ID Local Intrfce ...
0
votes
0answers
38 views

Cisco ASDM-IDM Launcher does not launch to device

i try to connect my ASA 5505 with Cisco ASDM-IDM Launcher but it shows error. I have tried each online solutions but did not work so far. Perhaps i do not have username and password? if yeah, how to ...
0
votes
0answers
64 views

How to configure a static DNS on a DHCP Client with Cisco Packet Tracer

I'm new. I am having an issue with trying to get a Static DNS Ip assigned to DHCP clients. I have created a DHCP network, with VLAN segregation. Workstations are connected to a switch and acquire DHCP ...
-3
votes
1answer
61 views

CISCO Configuration. DHCP & VLAN configured. But can't ping other VLAN clients [closed]

I have created a network testing lab with CISCO Packet Tracer. I have performed the following to get a DHCP and VLAN (with Trucking) working: Configured Router interfaces (g0/0 + g0/0.10-0.50) ...
0
votes
1answer
33 views

How to route IPv6 across ports in Cisco ISR

I have a Cisco ISR router with 4 ports. We own our IPv4 addresses and handle them via BGP, but my datacenter provider assigned us a IPv6 network. I've successfully added the IPv6 network to ...
0
votes
0answers
16 views

Cisco VPN client - How to block Odd numbered addresses with ACL (Extended ACL)?

So I am trying to configure a VPN client on cisco packet tracer but I am having some issues with configuring the ACL. In my task I am trying to create a VPN tunnel between R4 and R2. I am trying to ...
0
votes
0answers
82 views

Access Point setting on tplink TL-mr3420

We have a network with Mikrotik cloud core Routerboard (with DHCP pool of 172.16.0.1 - 172.16.255.254) which we use for Hotspot authentication. A Cisco 2960 switch is connected to the Mikrotik and ...
0
votes
1answer
22 views

Cisco 800 Series RPing's to ISP are Intermittant

According to my ISP, our occasional internet outages are do to a router configuration problem. They say the router must RPing the ISP regularly. Failure to do so in 4 hours results in outgoing and ...
0
votes
0answers
11 views

CISCO UCS Servers Display Flash Memory Serial as 0x####ABCD

I am attempting to pull the flash memory serial numbers of my UCS blades via CMIC, but when it provides the information it displays the serial number as 0x and what appears to be an 8 character ...
2
votes
1answer
37 views

Webex not using DNSSEC

our government issued a statement that all video/voice online enabling software needs to use DNSSEC for all address translations and all used DNS servers need to support DNSSEC. I tried few DNSSEC ...
0
votes
0answers
44 views

Dropped Packages in netzwork: ethertype Unknown (0xa0a0)

We recently started to monitor our servers and found that our network interfaces drop several packages per minute. The following investigation showed that those are always packages in the following ...
0
votes
2answers
57 views

cisco sg550X support m-lag and

Please tell me Support MC-LAG (Multichassis Link Aggregation Groups) model cisco sg550x? can i use at the same time in stack for example: 1/1-2/1: M-LAG (LAG1) and 1/19-2/20,1/20-2/19: for stack ...
0
votes
0answers
38 views

Unable access forwarded ports in cisco router

Below is my router config. I've got a static public IP FYI. hostname R1 boot-start-marker boot-end-marker enable secret 4 GKuIQycLGFn/1VtTta/OeXqUIqQROubxT/D40OGFs0c no aaa new-model ip cef ip ...
1
vote
0answers
32 views

Cisco: some NAT and firewall rules do not load after reboot

I am relatively new to Cisco routers but managed to configure most of the stuff successfully. However, there is one problem that I just can't find a solution to. I have set up a VDSL connection on ...
0
votes
1answer
59 views

What is the purpose of having 2 Cisco ASA 5500-X Series Firewall in a Network?

I just came across a technical proposal for having a control room & server in new york and another control room & server room in Singapore. There will be 2x Cisco ASA 5500-X Series Firewall in ...
0
votes
0answers
37 views

Can Cisco ASA PBR route to specific IP/port?

I am working on setting up PBR on our ASA-5505, and was trying to figure out if this scenario is possible. Traffic coming in via one public externa IP on port 443. ASA identify traffic via ACL and ...
0
votes
1answer
124 views

Ip address overlaps fa0/0

I'm having hard time, I assigned ip 192.168.9.0 to fa0/0 and tried to assign 192.168.9.32 to fa0/1. In the subsequent, I get the error 192.168.9.32 overlaps fastethernet0/0
0
votes
1answer
155 views

SNMP Network traffic difference between ifInOctet and ifHCInOctet

I try to monitor some Cisco 2960x Switch devices and I know there are the SNMP OID's ifInOctets (32-bit Counter) and ifHCinOctets (64-bit Counter). Can someone explain me whats the difference between ...
0
votes
1answer
267 views

Troubleshooting SSL_ERROR_NO_CYPHER_OVERLAP in Firefox

I'm trying to get some assistance over on the Network Engineering Stack Exchange but they really want to blame the browser (see the comments there). I am looking for a fix that does not modify the ...
0
votes
0answers
28 views

Can't get access to Hyper-V servers

I have 3 Hyper-V servers at work. After reconfiguring the network, the servers became unavailable. iLo works (vlan 123), but I cannot ping the physical ports. The server only pings itself. The ports ...
0
votes
0answers
172 views

Tunnel keep-alive issue between Cisco and Mik router

I really need your help. I'm trying to connect a Mikrotik router with a Cisco router with GRE tunnel using Public IPS. The problem is when I try to configure keep alive between both routers the tunnel ...
0
votes
0answers
169 views

Palo Alto virtual Wire and Spanning Tree

I have a problem with my configuration on my palo alto firewall and cisco switches. My target: Assign a public IP to a VM behind the Palo Alto Firewall. My idea: Add a second uplink to the ISP-Router ...
1
vote
2answers
30 views

Cisco spanning tree configuration

I need your support for my spanning tree configuration. I like to bridge my public network to a server and give him a public IP. I am using a virtual wire at the firewall to forward the public network....
0
votes
0answers
92 views

A gre tunnel between Mikrotik and Cisco router

I really need your help I'm trying to connect a Mikrotik router with a Cisco router with GRE tunnel using Public IPS the problem is when I try to configure keep alive between both routers the tunnel ...
0
votes
1answer
151 views

ACL not working with NAT

I'm studying on Cisco packet tracking, I just found one strange thing. I attached the network map and configuration below. 1> I created NAT for 10.2.0.0/16 and 10.3.0.0/16 to access the server0. 2&...
0
votes
0answers
23 views

Block RTP through port 80 and 443 on Firewall

Is it possible to block RTP traffic like those below using a Cisco ASA hardware router? If so what commands would be a good place to start?
0
votes
0answers
13 views

How to identify Cisco C3850 switch in /dev/serial/by-id

We have several Cisco C3850 switches connected via USB to a centos deployment server and want to reliably deploy configuration to each of them, which we thought we could do by using tftp to pull ...
0
votes
1answer
132 views

Mikrotik Routerboard connected to ISP via Cisco 2900 Router

I'm sorry it's a bit of a long one and I had to mask some information. With that said, I am in a conundrum and need help. Our network guy left and I've been tasked with getting the house in order. I ...

1
2 3 4 5
52