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 team,IN our network we have to change the mtu size due to GRE overhead ( 12 bytes ). For that i have come with 2 commands Do i need to enter both commands or one if enough ? Current IP MTU(1500) = IP Header ( 20 ) + TCP header ( 20 ) + MSS ( 14...
So I have computer with an IP address of 10.92.110.5, this computer sits on VLAN 110. I added this VLAN in all the switches, from default gateway switch to the switch closest to the computer (110.5) itself. I have ADMIN 1(192.168.2.5) which is consid...
Resolved! Sticky secure mac feature
Hi everyone, I've seen the different features that the switch uses to learn mac addresses. Specifically, it dynamically learns them and when a device is disconnected from that port it is lost after a certain time. If instead I configure sticky secure...
Resolved! Cisco C9300-24P WAN Link Throughput
Hi, Please assist, how much WAN Throughput does Cisco C9300-24P support if we terminate a 1G ISP link on the L3 Switch, having Network Advantage License on it? IOS running: Gibraltar-16.12.3 Regards,Aditya Deshmukh
We want to test two different ISP. I have two firewalls each with a different network (of course), but only one layer 3 switch. Is it possible to make one interface on the switch go to one firewall and another interface on the same switch to go to th...
Good day all, Just thought I post this discussion to help somebody that may run into this issue in future. This is how I resolved this problem, may or may not apply to all but worth a shot. I have a Cisco 2951 ISR running Zone Based Firewall. I...
I have a 3550 that is running layer 3, and acting as the endpoint of several incoming IP blocks, as well as the default gateway for the internal networks to get out. The remote ISP has assigned a /30 to use on the interface, and they route the block...
I apologize in advance as I am not the most familiar with networking and may be rough with some terms.Recently, I acquired a SG300-28 for lab use and is in L3 mode primarily handling inter-VLAN routing across 9 VLANs, most traffic being on 3 of those...
Hi all!!!I have a core of 8 x 3750-X stack running IOS 12.2(55)SE4 and was wondering if I can do a straight upgrade to IOS 15.2 or there is a need for a hop upgrade? A quick answer would be greatly appreciated! Thank you!
Hi all, out of the box was running 16.12.1c i pushed in the new image 16.12.2 (it was a single box and was not in stackwise vsl) and rebooted the box (changed the boot variable pointing to new image).Apr 29 22:46:02.495: %PMAN-3-RELOAD_SYSTEM: F0/0: ...
I am having issues across the estate where the Cisco C9300-48UXM switches esp in stacks will do a random reboot usually a few weeks apart but at any time and nothing shows in the logs showing exactly why. Apr 28 09:43:55 Cab-NLabsAC_2_RP_0 stack_mgr...
hi,Anybody who knows what´s this message means:%PMAN-3-PROCHOLDDOWN: Chassis 2 R0/0: pman: The process iomd has been helddown (rc 139)
Hello,I have a sup720 65k. Today we had a server which had a NIC failure, and so we used another spare nic from the same server to get it back online. The same IP details were configured on the new NIC. This took about 30 minutes.The problem was that...
I have a Nexus 92160YC switch on NX-OS version 9.3.1. It's configured to use a radius server (RHEL 7 server running freeradius) for 802.1x MAC Authentication Bypass (MAB). When it's initially setup it appears to work fine for devices that are auth...
Hi, currently doing a lab in PT. Getting the following error message: FIRST Router(config)#interface Fastethernet0/0Router(config-if)#ip add 172.16.0.1 255.255.240.0Router(config-if)#exitSECOUND Router(config)#interface Fastethernet0/0Router(config-i...
