Hello all, I am facing this issue in my client. In business hours, every 30 minutes, the CPU increases to 99%-100% due to ARP Input process. Initially, it was the ARP snoop process, but we disable "ip device tracking" functionality from all the i...
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Hi everyone, I hope someone can help me with this as it's driving me up the wall. I've attached config for a Cisco 800 ADSL router. From the router, I can ping out to Internet, but when I connect a laptop to the LAN, I can't get to internet even thou...
Hi all, we have a pair of Nexus 3172T forming a vPC. These are connected to our core switches (6509) via trunks, that for the time being allow only one vlan (137). The 6509 are the root bridges for all vlans, including x, but when I run "show spann...
Hello everybody, I'm a computer science student and today at school we were given a starting ip of 196.100.0.0 and had to set up 2 VLAN using a total of: 1 Router connected to 3 Switches that were connected to 6 PCs (2 for each Switch), so ever PC w...
DHCP was working both on the wired and AP sides. This is the only DHCP server on the local network. I am fairly sure it is an ACL issue but am lost as to what I did wrong. The following are the DHCP, Interface, and ACL sections of the configuratio...
My cat 3850 can enter rommon, but can't boot normally. It displays: Kernel Address : 0x6044e044Kernel Size : 0x402ecf/4206287Initramfs Address : 0x60850f14Initramfs Size : 0xdb8d7e/14388606Compression Format: .mzip Bootable image at @ ram:0x6044e04...
We have strange issue that we are unable to access the one server 10.10.3.236 Its in our LAN, and the same server we can access from remote VPN (GP & CISCO anycoonect, citrix). User (172.x.x.x/24) ---Catalyst SW(L2)---COR Nexus SW ( L3 Gateway fo...
My customer need 10 gb port for their old catalyst 6509E the have WS-SUP720-3B but any card in found is EOL o EOS from cisco, the new ones i couldn´t find anything about their compatibility with that old supervisor. Any advice. regards ...
Please find the attached file for packet capture at the time of issue Nexus (172.30.60.1 GW configured)---10 Gig ------(172.30.60.8 ist VADC hosted on Alteon physical box)---Intermittent packet loss No errors on 10 Gig packet capture at Nexus...
Hello, i have a port channel with 3 links. The configuration is: interface Port-channel2 switchport switchport trunk encapsulation dot1q switchport mode trunk end ! interface GigabitEthernet2/1 switchport trunk encapsulation dot1q switchport ...
Resolved! How to verify Auto QoS is working?
We implemented auto qos on our 2960's access ports and uplink ports to support Cisco Jabber. How can we verify that QoS is working? interface GigabitEthernet1/0/19 switchport access vlan 301 switchport mode access switchport voice vlan 64 power inl...
Can someone please explain the difference in behavior between SRR and WRR priority queues? I have read so much and I still don't understand. In both, SRR and WRR, is the priority queue serviced until empty (thus starving the other queues?) Or is it.....
can someone please help me with this issue. we have two vlans for voice and data. but we are planing to move to a new location don't have enough port access. so our plan is to use phone as a switch. i know cisco phones will identify different vlans c...
I have successfully deployed numerous uplink MACsec-encrypted links in a fashion similar to the following where both ends are layer 3, or both ends are layer 2 trunks. The platforms are Catalyst 6840Xs, 3850s and 3650s. interface GigabitEthernet...
I have 3 c2960X-48TS-L switches that I cannot get to boot with IOS version 15.2.2E6. The only IOS version I can get to run on them is 15.2.5bE. I also tried the recommended version, 15.2.2E7, but that does not work either. We have a customer that...
