Questions tagged [cisco]

The major provider of networking equipment. This is a generic tag to be used when no more specific tags are available. See the list of tags in Help Center Tag page.

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1answer
141 views

ISR4000 ignoring boot system comand

i have an issue with an ISR4331 Box. My aim is to install IOS 16.09.04 on the box currently running at 155-3.S4b. #sh run | sec boot boot-start-marker boot system flash bootflash:/isr4300-universalk9....
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1answer
156 views

Is it possible Running all Cisco IOS images inside gns3?

I have recently installed gns3 and I have specific ios version which I need to deploy locally for training, but for some reason gns3 wont pick them up. I am wondering is there any workaround for this? ...
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10 views

Ipv6 link-local/multicast issue [duplicate]

When you ping a link-local address why is the destination (in packet tracer) to the solicited-node multicast address of the host and not the (FE80) link local address ? I understand that it needs to ...
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2answers
61 views

Cisco Switch without VLAN support?

I've been reading about VLAN and wondering is there any Cisco Switches that do not support VLAN? So far, all switches that I found do support VLAN. This is one of the example in my lab. Cisco-Switch-...
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0answers
27 views

Cisco HSRP configuration error in packet tracer

When I configure hsrp everything is ok, but when I connect r1 to r2 and r1 to switch2 then comminication stops. When I remove both the link then again every thing is ok. password packet tracer is ...
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1answer
67 views

Problem in cisco routing bgp routes

We have an outbound route-map on an eBGP peer that adds some communities to certain prefixes. Is there any way to prove that this is actually happening from the sender side in classic IOS? show ip ...
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1answer
66 views

How can I get OSPF to see the VLANS that are trunked through the gigabit port

I am relatively new to this and I have been trying various configs but nothing is catching. I have three routers, with various vlans. The vlans are working. The routers are seeing each other using ...
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1answer
38 views

Monitor individual device traffic on Cisco RV042

I am able to monitor Total Traffic consumption on the Cisco RV042 router using SNMP and PRTG. I want to be able to monitor traffic used by each device on my net
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26 views

Cisco Virl instace issue

i'm using cisco virl on dcloud and when i try to run my topology consisting of 2 ios routers and an iosl2 router i get an error... stating that i've exceeded quotas, required 4, available 0. Any ...
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1answer
193 views

NXOS DHCP Relay - overwriting Option 54 (Server Identifier) differently in DHCPDISCOVER vs. DHCPREQUEST?

I'm trying to sort a DHCP relay problem in a VLXAN/EVPN environment (Cisco N9K, NXOS 9.3.2). We seem to be able to get DHCPDISCOVERs through to the server and DHCPOFFERS back from there. DHCPREQUESTs ...
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40 views

Cisco Guestshell - Bridging of VirtualPortGroup0

i'm fiddling around with ne virtual-services functions of IOS-XE. Is there a possibility to bring interface "VirtualPortGroup0" into a bridge domain with some physical interface of the router? It's ...
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1answer
224 views

c9300 command state

I have a C9300-24P switch removed from stack which was configured as slave, after restarting it stops after checking hardware and indicating the switch number as one. The switch ends with Switch: ...
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2answers
223 views

If EIGRP is designed to work within same autonomous system, why it has concept of multiple ASN?

EIGRP is a CISCO proprietary protocol and a type of Interior Gateway Protocol, which replaced now obsolete Interior Gateway Routing Protocol. This protocol like every other interior routing protocol, ...
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3answers
95 views

How do I know which product IOS my router has

All My device ASR-1001-X I'm trying to see what type of product my IOS is on my router. As I'm buying another one of the same kind. My current router has this information Cisco IOS XE Software, ...
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3answers
169 views

Unable to see logs in “show logging”

I'm unable to see any new logs about from Mar 8 in Cisco Nexus C9372PX my logging configuration is as follows: CORENEXUS02# show logging Logging console: enabled (Severity: critical) ...
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1answer
33 views

send packets back to a packet-coming port for L2 traffic using L2 switch

I have VMs connected to a single NIC port, and that physical port is connected to a physical switch port. +-------------+ | Server | |+----+ +----+| ||VM_A| |VM_B|| |+--+-+ +-+--+| | +--+--+ ...
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1answer
219 views

Cisco 2960 radius configuration

I have multiple cisco switches like Nexus family and IOS family switches and now i am trying to configure centralized authentication so i have install Freeradius and freeIPA (ldap server) I have ...
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1answer
231 views

Tacacs+ login asking ENABLE password & logs not working

I am new to TACACS so please bear me with my novice level questions :) I have configured TACACS+ on Ubuntu. now I can login to switch with users defined in TACACS+ server. I have created two users, ...
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1answer
67 views

Enterprise network VS Industrial network [closed]

I would like to know the difference between the enterprise network and industrial Network.If someone has experience in industrial network, is he able to work in enterprise network?
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1answer
66 views

Ideal Rx Power range for Cisco 7613 controllers and interface status if not in the ideal power range

I observed Rx power out of range in 4 controllers of CISCO 7600 router as given below- The Transceiver in slot 3 subslot 0 port 0 is enabled. Transceiver Rx optical power = -1.8 dBm ...
3
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1answer
220 views

What is the difference between Cisco's QoS models and strategies?

I have been reading about QoS and different strategies. From what I understand, Cisco proposes three different models and three different strategies for QoS. For strategies, you can have a 4-class, ...
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2answers
35 views

After configure auto secure cannot log in (Cisco router 1941)

I have used network policy server on my Windows Server 2012 r2 to manage my accounts on router 1941 but after I used auto secure to harden my router, all my accounts cannot log in anymore, any ...
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0answers
61 views

Do I need 5 licenses for Cisco DNA Premier to connect 5x 9300 switches to DNA Center, ISE and Stealthwatch?

Cisco Licensing is very strange and I spent over 4 hours reading about its obfuscated software licensing plan. My question is simple. Do I have to purchase 5 different licenses of Cisco DNA Premier (...
2
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1answer
50 views

Cisco 5505 ASA firewall Ipsec vpn- Can connect two outside different public ip to two different local subnets

I only get one IPSEC vpn connection up but not the other. Link to access configs on Google: https://drive.google.com/open?id=1yB_yIWvJ51A0UeNbkAEiTH9YMIEipqy_ profile1- outside interface - 66.x.x.x ...
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1answer
90 views

TCP handshake immediately RST [closed]

I'm trying to set up a modbus TCP connection on port 502 but get a RST packet immediatly. So the TCP connection handshake doesn't even succeed. This is done on a windows machine on an ESX server. The ...
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2answers
2k views

Router won't hold configuration

I have reset the password on a Cisco 1700 router, now when I copy run start or write mem then reload or reboot, it defaults to factory settings, i.e. it is not holding the configuration I have just ...
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3answers
45 views

Ip phone problem cannot get an ip address from dhcp using other vlans except from vlan 1

i am trying to understand native vlans. when i use vlan 1 it worked and it provides an ip address to my ip phone. When using vlan 100 it does not work even i tried using native trunking on it. please ...
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1answer
51 views

What are Cisco Devices? [closed]

I am doing CCNA online and not for a minute have I not failed to come acroos the statement 'Cisco Device' What exactly are cisco devices ? Please don't tell me 'Devices that use Cisco iOS' Can you ...
1
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1answer
51 views

Filter tagged route to downstream routers

I'd like to filter a redistributed route from EIGRP into OSPF to all routers in AREA2 and AREA34. I have tagged the route 10.90.100.0/24 with tag 90 at the Tampa router where its redistributed into ...
2
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1answer
98 views

Cisco configure RADIUS with local account same time

In LAB i am working on Cisco authentication with freeradius and everything works but i want my cisco switch first lookup in radius and if user didn't find then it go to local database. currently i ...
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2answers
128 views

How to differentiate if a Cisco device is a L3 switch or a Router?

I need to check all the L3 switches if they are configured with same ospf ID, As i am doing it in the Cisco prime, there are routers in the inventory too. Is there a show command where i can clearly ...
2
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1answer
49 views

How to check the route table on a neighboring router?

I have a router in a network, which use to show list of routes in the route table. Using the command- show ip eigrp topology I see some of the routes are removed after sometime, which were advertised ...
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2answers
41 views

OSPFv2 through firewall

My network. https://imgur.com/a/5QI1NNq So my question is, on the 3 yellow above. Sub networks, I've used static routing, but on the other side of the internet (blue field) I've used Ospfv2. on the ...
3
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1answer
98 views

Cisco MIB for physical memory

router#show ver 4194304K bytes of physical memory. Does anyone know the mib for physical memory of a cisco router? Lots of examples of memory used etc. Edit: Nothing is easy in cisco land -sh-4....
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0answers
348 views

How to check vlan interface traffic on Cisco nexus 9k

I have Cisco N9K-C9396PX L3 switch which has VLAN interface configured for my LAN gateway and i want to monitor how much traffic vlanXXX handling, I have configured SNMP monitoring to pull interface ...
3
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3answers
578 views

LACPDU packets to pass through unmanaged switch

I have two buildings connected through the CAT6 cable and both ends have cisco-sg350 (capable of etherchannel). Due to the limitations of the cable both the switches are connected through a unmanaged ...
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2answers
34 views

Is there any method for insert ssh key in putty when i need to connect cisco router?

I need to connect to cisco router and use private key to connect, but i need to use to putty for ssh. Is there any way?
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1answer
56 views

Cisco Zone Based Firewall

I have Cisco 891F configured with ZBF from CBAC. Right now, router is wide-open SSH/443 or anything my public address is listening on, which is not what I intended. My intention was to only allow IMCP ...
0
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2answers
245 views

How can i find which cisco switch port is connnected to specific port of Fortigate?

there is any way to find that which switch port connected to mgmt port of fortigate? for example can i enable lldp on Cisco switch and Fortigate together? Fortigate 1500D (version 5.6.2) and switch is ...
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1answer
34 views

WebAuth With RADIUS For Switch Web Portal

I have a Cisco IE4000 running IOS 15.2. I am trying to login with my RADIUS credentials to the web portal for the switch. Currently the RADIUS is configured for successful login to Console and SSL but ...
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2answers
167 views

Multiple DHCP Pools in Ubuntu Server with DHCP Relay

I am currently using Cisco SG-350 Series Switch as the DHCP server on the network. I was having 16 VLANs, and my SG350-28 switch was acting as the DHCP server for all the VLANs. All was running fine ...
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0answers
120 views

How do I bridge a Cisco 860VAE-W from VDSL to Ethernet?

I've got a Cisco 860VAE-W which I'm trying to bridge. I picked it up because I was interested in learning a bit about an IOS device – I'm coming at this pretty raw. >show inventory NAME: "C867VAE-...
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0answers
119 views

Cisco FMC stuck on boot menu screen on eve-ng

Any time I restart Cisco FMC on eve-ng, it doesn't boot the default image. When I connect via VNC and press enter or type the image version to boot, it doesn't respond to laptop keystrokes . I was ...
4
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1answer
329 views

Cisco Nexus 9300 TCAM carving

I have Cisco Nexus C9396PX L3 switch and i have configured bunch of ACL (inbound) on it to deny/permit traffic. now if i am trying to add more ACL then getting error that your TCAM table is full. here ...
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0answers
31 views

Cisco Switch (not ISE/ACE) redirect HTTP server to HTTPS

I wish to enable HTTPS server on Cisco , and redirect HTTP to HTTPS, instead of simply disabling HTTP. Is this possible? Current config: no ip http server ip http secure-server
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1answer
43 views

DHCP when you have both layer 3 and switch ports

I have the following config: ip dhcp pool Vlan10 network 192.168.1.0 255.255.255.0 default-router 192.168.1.1 interface GigabitEthernet0/0 ! interface GigabitEthernet0/0.10 encapsulation ...
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1answer
129 views

EIGRP Holding Time Expire on VLAN Interfaces

I configure 2 Layer 3 Switches with VLANs and EIGRP route. But it always return a message like this : %DUAL-5-NBRCHANGE: IP-EIGRP 2019: Neighbor 192.168.20.253 (Vlan20) is down: holding time expired ...
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1answer
21 views

Is this extended acl valid?

Permit tcp any eq 80 host 10.23.3.10 eq 80 I would like to permit any address to reach the host 10.23.3.10 strictly on port 80 This is a school lab exercise. The question goes, for inbound traffic ...
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1answer
37 views

How to use twisted pair as console to manage Cisco devices?

Is this possible to use a normal twisted pair cable or roll over to manage Cisco devices through console port? (without any converter to USB) I tested before a roll over and connected it to Cisco ...
1
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1answer
74 views

Cannot Connect to one single ip address in VLAN

I have 3650 Switch which contain number of VLAN and I am unable to connect to one ip address from specific VLAN. But routing is properly configured and there is no ACL applied. Even end device has no ...

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