Switching

Resolved! Cisco Catalyst 4503 ->Cisco 3560 L3 -> Cisco 2960 L2 -> Cisco SMB Switch

Hi Experts , I am trying to add a Cisco SMB SF300 - 24 Switch to an infrastructure which has only Cisco Catalyst Switches The Core layer is Cisco Cataylst 4503 . Distribution is Cisco Catalyst 3560 and the Access Layer is Cisco 2960 Switches.There ab...

two cards HWIC-4ESW on C3845

We have two cards HWIC-4ESW on router 3845 but we need that the two cards 8 ports conected betwen, if a pc on port 1 can ping a pc conected on port 8 on second card. tis comunication can,t doing a pc on port 1 can,t conected a pc on port 8.the confi...

Ports going up and down (Normal?)

Hi i am just wondering, we hava a couple of 2960 switches and we are logging to a syslog server.Ports keep going up and down is it normal severity (error) ?See below ´

ES20+ QinQ

I can configure two protocol on phisical interface cisco 7600 with card es20+: 802.1q and 802.1adthanks

Resolved! DNS query fails behind DHCP/NAT-Router (ISR 861)

Dear community,in my simple network setup, I cannot resolve DNS queries from inside my NATted network. On the router I can ping both IP-addresses and names. Ping from the local machine works for IP-Adresses but not for names. When doing nslookup, ad...

moving folders

Hello.I hope i found help here. I have a cisco 3560 8 port switch. I really would lime to have the webinterface enabled. So i downloaded the archive from cisco. I extracted the archive to the flash of the switch. After rebooting the device everything...

Resolved! Questions on Native Vlan

Im still having problems grasping this topic. I get the jist of it in theoretical use as we use it to send untagged frames across a trunked link. My question I guess would be how is it relevant in today's networks? Why are we sending these frames unt...

Resolved! Protocol Not In This Image

I tried enabling ospf on a Cisco Cat3750, model number: WS-C3750E-48PD-S. But it says "Protocol not in this image". I looked on cisco's website for a download for a IPServicesK9 or a Advanced IPServicesK9 image to re-image the switch with but it seem...

Missing Logs - 1841 Router

Hello, I am trying to verify I have logging working. I have the following logging configured:logging buffered 16000 informationallogging monitor informationalI have tried generating traffic, all kindsWhen I do:sh log | inc (ip address source)I don't...

Resolved! Force routing using a secondary IP as its source

Hello,Is it possible to force a router to use its secondary IP on an outside-facing interface as a source IP for traffic that originates from within the router, such as ICMP, NTP, and DNS?i.e.interface vlan 200ip address 10.0.0.2 255.255.255.0ip addr...

Resolved! Switch IOS version and hardware version compatibility

Hello,I am confused about some things regarding the different IOS versions and their compatibility with certain switch hardware. I understand the differences between the IPBASE and IPSERVICES ios but am not quite clear as to how you can tell which io...

Resolved! 3750 stack switches ios upgrade

I am trying to do ios upgrade on 5 stacked 3750 switches. All the switches have different model number, so i am wondering which image file i should download. As far as i understand all the stacked switches should have the same IOS, i may be wrong. Th...

High CPU due to SSH process on 3750 switch

Hi All,I'm facing high CPU utilization issue due to a ssh process on 3750 switch. What is the use of SSH proces in the switch? Can I disable it for troubleshooting?will there be any impact if I disable it?#sh processes cpu sorted 5minCPU utilizatio...

DHCP-Snooping command on catos

I am trying to find a command for dhcp snooping rate-limiting on a CatOS. The PFC card is PFC. PFC3B is said to support that command. But there seems no this command.thanks,Han-6k> (enable) sh verWS-C6509-E Software, Version NmpSW: 8.4(5)Copyright (c...

Having a problem with internal users accessing an external web address

Kind of have a two fold question, we recently upgraded from an RVS4000 router which didn't have this issue.current setup,a server 2008 r2 domain, AD/DNS, exchange 2010, two sites connected with an IPSec point to point VPN with two 1941w series cisco ...

Switching

Forum Posts

Resolved! Cisco Catalyst 4503 ->Cisco 3560 L3 -> Cisco 2960 L2 -> Cisco SMB Switch

two cards HWIC-4ESW on C3845

Ports going up and down (Normal?)

ES20+ QinQ

Resolved! DNS query fails behind DHCP/NAT-Router (ISR 861)

moving folders

Resolved! Questions on Native Vlan

Resolved! Protocol Not In This Image

Missing Logs - 1841 Router

Resolved! Force routing using a secondary IP as its source

Resolved! Switch IOS version and hardware version compatibility

Resolved! 3750 stack switches ios upgrade

High CPU due to SSH process on 3750 switch

DHCP-Snooping command on catos

Having a problem with internal users accessing an external web address

Cisco + Splunk: It's a new day for your data.

Speed & Tech: Unveiling the Cisco-McLaren F1 Partnership

Congratulations to all the August-October 2023 winners!

A new chapter of the Spotlight Award begins!

Announcing Resources That Guide You to Success

9300s to nexus for top of rack

Monitoring network traffic from a multicast IP address

QinQ Default Tuneling STAG Ethertype WS-C3560CX & C9300

LOAD BALANCE IN port channel NEXUS SAME IN TWO DEVICE

Cisco IE-3300-8U2X-E

Cisco 9200L IOS Software

PVLAN over Trunk Ports

webui is text only on c3560

Root in RSTP changes after closing the file