Switching

Does switch has its own mac address. which command can be used to see it ?

I have a L3 Switch 3850 with 12 vlans namely vlan1, vlan2...vlan11, vlan12. I want unrestricted access among first 10 vlans (vlan1 to vlan10). I will not define any ACL for these vlans. Vlan 11 and vlan12 should communicate with each other but these ...

I have an IE-3000-4TC with an IEM-3000-8SM= expansion module. The IEM-3000-8SM= has 8 x100Mb SFP ports. Only SFP port 1-4 recognizes SFP modules: *Mar 1 23:10:07.524 UTC: %PHY-5-TRANSCEIVERINSERTED: Slot=1 Port=9: Transceiver has been inserted   When...

Dear all, I have a Cisco 2951 ISR, and for the last month it has been self restarting once or twice per day, I can see that there is an "address error at PC 0x404EBD8, address 0xBADDAE4D" when I issue "show version" command. Can you please explain wh...

Hi,Yesterday, a USER MACHINE running windows xp flooded our LAN network. The log in our Core Switches/Routers shows a lot of logs regarding PIM-5-DRCHG:001087: Feb 11 03:32:27.746 EST: %PIM-5-DRCHG: DR change from neighbor X.X.X.Zto X.X.X.W on interf...

Hello I have Cisco 4321 router. But I can't enable MPLS due to the license issue. Please share with me, which license i need for enable MPLS features in CISCO 4321 router. And how much VRF I can create in CISCO 4321 router.  

Hi All,   I would like to check if my cisco 2960-24TTL switch can install firmware version 15.2(4)E6 or 15.2(6)E1? https://www.cisco.com/c/en/us/support/switches/catalyst-2960-24tt-l-switch/model.html#~tab-downloads   Will there be any issue if i use...

What type of license, apart from the Base I need in a 3595, if I am going to use it as a logs server?

Hello Guys,   What will happen if we connect single cable on two different port (port 1 and port 2) of same switch.   1st condition 1-> both port are in same vlan 10 and PVST is working. 2->both port are in different vlan (10 & 20) and pvst is workin...

Hello,I have a big doubt. Can I connect a LAN switch (i.e. 2960, 3560 or 3750) to a couple of Nexus 2000 FEX (i.e 2232P or 2248TP) and have a Port-Channel or vPC with STP active and several VLANs through this Port-Channel? Or Can I only connect serve...

So im fairly new to multicast routing and my first exposure is trying to get it to work on quiet a large network. If i can get it to work across one link i cab reoeat for everything else though. A snapshot of what im working with looks like this: MUL...