Hi all, I have a stack with two WS-C3650-48TD and IPBase license. I have enabled ipv4 routing with a few SVIs (VLAN interfaces for a few low traffic customers) and I'm running OSPF. Yesterday, a DDOS attack was *routed* through the WS-C3650. At the...
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Forum Posts
Hello guys, 'I new here in the Forum and would like to post my first question: Where I work, my client has 3 switches model 3750x-48PS connected via cable stack. The problem is in the switch 3 of the stack the two doors giga3/0/21 and giga3/0/24,...
hello guys, yes, me again :D CISCO Catalyst 2960 switch. I' running the following commands: S1(config)#int fa 0/24 S1(config-if)#swit S1(config-if)#switchport mo S1(config-if)#switchport mode ac S1(config-if)#switchport mode access S1(config-if)...
HI Team , Good day !!!! May I know how to modify speed and duplex under a working trunk interface : I am using the image of : c2960-lanbasek9-mz.122-55.SE9/c2960-lanbasek9-mz.122-55.SE9.bin ( model : WS-C2960-24TT-L ). I have tried to modify the s...
Hello There! We are thinking on upgrading out core switches to Cisco-Meraki switches. I'm not 100% sure yet. As of everything is life, there are advantages and disadvantages. I would like to know if you guys could tell the most relevant Cons and Pr...
Hello Everyone,I am working on one design and need support for connectivity between two core switches and router. As shown in the attached diagram, it has two 4506E core switches and 2921 router which is connected to the internet. I need idea how the...
I know this is a basic question but we have a Nexus 7K switch running version 6 software and for this example two switches connected via trunk links to the N7K. VLAN 10 is configured on the N7K and the trunks to the two other switches are configured ...
We have a pair of 6509 switches in our data centre and I have recently noticed a routing issue with one of the switches. We set up a new VLAN in our data centre dedicated for data replication between our primary and secondary data centres. What we no...
Resolved! TACACS
There is command to test TACACS on the CLI in Cisco switches and router - Does anyone know the command?
Resolved! Using /31 subnet mask - Can I use .0?
We are redoing our distribution switches and now's a good time to re-IP them using a /31 subnet mask. Can I use the .0 address? Seems like I should be able to.
Hi all, I need some help and clarification about upgrading license from evaluation to Advamced Enterprise Service on Cisco ISR 3925. The thing i have done is for testingt some feature i have activated the Evaluation license by enabling datak9 feature...
Hi oracles,I have a really simple problem, which I can't find the right solution for.I have two Nexus 3064 that I use for iSCSI SAN access. My SAN provider wants me to enable bi-directional flow-control due to a performance issue.But I can't figure o...
Hi, I have two C9332PQ switches with initial configuration and we need config the breakout mode at some interfaces. When we write the interface breakout module 1 command in global config mode the switch show the next error: ERROR: Module is not onl...
Hi all. we have a core switch and there are two server directily connected to it but we notice to download a file from one server to other take 1minutes for 800M. they are on same vlan. full duplex and on auto speed. but on an other core and differe...
Hi guys so I'm creating my own network within Packet Tracer 6.3. While the hosts can ping others on the same 2960 switch and VLAN, they cant ping a host on another switch in the same VLAN. Eg. Josh PC on S1 (192.168.10.10) cannot ping Doge PC on S2 (...
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