Hello, Cisco Community!I’m really happy to share that I’ll be hosting the Cisco Community Lab Series, a brand-new hands-on learning journey designed to help you build practical networking skills step by step.Every Thursday at 8 PM EST, I’ll post a ne...
Forum Posts
Hi All,I have a lab topology like this but loop avoidance seems not to work and the traffic is duplicated on N9K-2 when the peer gateway is enabled. Interconnections.- Server1 connects to Router 1.- Routers use a subinterface to connect to N3Ks.- N3K...
Resolved! Extended Access list in VLAN issue
Hi there,My device is CBS350-24FP-4G.My topology:VLAN 101 Application 172.30.101.0/24VLAN 102 Staffs 172.30.102/24VLAN 103 Bastion 172.30.103.0/24I'm trying to create an extended ACL to allow a specific IP in VLAN 103 able to SSH to all IP in VLAN 10...
Hi, here is topology :switches-----[A_switchl3]svi90-----[B_switchl3]vlan90---endpoints at specific time we see a lot of arp broadcast requests from svi90 mac address for hosts in that vlan 90 which drops our endpoints work.I assume that arp was...
We have a network installed in two locations, which has a 24 port Cisco switch with redundant connections to the customer’s network. The 24 port switch has two ports connecting to the customer, each port connects to a 16 port Managed switch with STP...
Hello Everyone,We are running two DHCP servers on our 9300 switch. Configured as follows:!!!ip dhcp database nvram:dhcp.txtno ip dhcp use vrf connectedip dhcp excluded-address 192.168.5.1 192.168.5.99ip dhcp excluded-address 10.4.10.1 10.4.10.99!ip d...
Hi everyone, Need urgent help on this please. Had issues booting up the 9800-40 WLC, so entered the rommon mode using the Break sequence and changed the config register using :rommon > confreg 0x2142and then reset. The WLC is still having issues with...
Why does a 2960 switch drop packets from a layer 3 switch, with the message "switch does not have the Vlan indicated on the IEEE 802.1q frame tag. It drops the frame" in packet tracer, all vlans and inter vlan routing was configured?
Hello, While connecting to my RV340 I store that my 40 site-to-site VPN tunnels with my clients were marked as "DOWN" while everything is working normally. Two days ago everything was ok. In view of our infrastructure, the router cannot be updated or...
Can I add an additional switch to a 9200l switch stack live? Meaning are the stackwise cables hot pluggable?
Hi all,I've got the following problem and can't find a precise answer anywhere.Need to build a 4 device stack with 2x 9300-48UXM, 1x 9300-48UN and 1x 9300-24UXB. The 48 Port devices work like a charm and are stacked as switch member 1-3. Stack member...
Resolved! Issue with Packet Tracer Routes
This must be a super basic question, but if I have two routers configured with the below addresses, how can I get them to see each other?R1 - Gi0/0/0 - 192.168.1.1/24 > R2 - Gi0/0/0 - 192.168.2.1/24I'm currently using Packet Tracer and I can't add st...
Hi there, I have the following problem.The switch is CBS350-24T-4X - CBS350. There are several trunk ports with other cisco switches (SF-300 series). There all works OK. Tagging, untagging and so on.The problem comes with connection with one unmanage...
I want to see what SFPs I'll need to connect the cisco C1000 16port (poe) and the c1000 48port (poe). Thank you,
Hi Al,I am having an issue with a Cisco 3850 Catalyst switch, issue as below: - Current config register is 0x142 and have configured the config register to 0x102 but even after reload the new config register does not come in place. - Have reloaded th...
Hi, I wanted to know what exactly is bug scrub. What exactly is done in this and what is the use of this process. What is the person doing when he is performing a bug scrub. Can anyone explain to me briefly.
