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Questions tagged [cisco-catalyst]

A brand of network switches by Cisco Systems.

113 questions
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How do I find out which physical port my ethersvi MAC address corresponds to on a Cisco switch?

I'm doing a layer2 network map (my first) and this is the first virtual mac I've encountered. From the mac address table of switch1, I have VLAN 1 6416.8d98.52c0 DYNAMIC Te0/1 and on the other, which I'll call switch0, when I am looking…
gozu
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LACP Trunk from Cisco to Fortinet

I am setting up a 2 ethernet trunk between a Cisco switch and Fortinet 100E firewall. So far the below is working (i can ping from Cisco 192.168.1.2 and get replies from the Fortinet 192.168.1.1): interface Port-channel1 switchport trunk native…
morleyc
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Cisco router and switch configuration

I want to configure a Cisco 2600 series router to be DHCP server. To the ethernet port i want to connect a Cisco Catalyst 2900XL 24 ports switch, in this switch i want to connect a computer in port X2, the 2600 series router should be in port X1 and…
M. Smith
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2 answers

Trying to use Azure AD as LDAP server with Cisco Catalyst IP Base

We setup a WiFi system in our school and currently we are using single password to let teachers login into campus WiFi. Next Semester we want to let kids login into WiFi for in class activities. We provide them with office 365 accounts(Free version…
user899893
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cisco 5548 - version 5.2 equivalent command to "service unsupported-transceiver"

In my new cisco switch version, kickstart: version 5.2(1)N1(7) system: version 5.2(1)N1(7) In this latest IOS , it doesnt have service command. Could any one help , the equivalent command for "service unsupported-transceiver" Thanks,
user1812956
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Cisco 3850 flooding all ports because CAM table not populated?

Encountering a strange issue with a Cisco 3850 that is in use as a core switch. It is flooding all ports on the switch with traffic. After investigating more, it appears that the CAM table is not updating, and is empty aside from the built in…
James
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IGMP Snooping limitations and when do you start to use PIM?

At a head end I've just inherited, all our multicast streams run on cisco switches with IGMP snooping enabled. Because all these streams are to be kept local and isolated we've never really looked into implementing routing protocols. However, I want…
rantsh
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What drawbacks does VTP pruning pose?

I'm currently learning a bit about Cisco switch configuration and VLAN configuration, specifically VTP. Reading on Cisco's site, the feature of VLAN pruning appears to not be used on a switch/VTP domain/VLAN by default. From what they give: All…
nanofarad
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Does Cisco IOS XRv support logging of TCP connection (e.g. built and/or teardown)?

I have a demo of Cisco IOS XRv and I would like to setup logging for connections. E.g. for ASA "show logging" shows log messages for every TCP connection built or teardown: Jun 11 12:29:31 10.10.10.254 %ASA-6-302013: Built outbound TCP connection…
Andrey Sapegin
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Spanning-tree setup with incompatible switches

I have a set of eight HP ProCurve 2910al-48G Ethernet switches at my datacenter that are set up in a star topology with no physical loops. I want to partially mesh the switches for redundancy and manage the loops with a spanning-tree…
wfaulk
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Linux Centos6 adapter bonding - Cisco 2960S EtherChannel LACP

I want to connect a CentOS 6.4 Linux Box with two NICs to a Cisco 2960S using LACP 802.3ad port aggregation. This mainly for redundancy reasons (and hopefully more bandwith). We don't use VLAN tagging. With the config listed below the link…
StackUnderflow
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How do I draw a layer 2 (link layer) network map containing Cisco and *NIX boxes?

I've been tasked with drawing a layer 2 network map of our very small datacenter network. There is one 1841 cisco router, two 3560 cisco catalyst switches and 4 solaris sunfire T-1000 boxes. I have logged in to the cisco boxes and downloaded the…
gozu
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Why is my Nexus 5548UP not adding ARP entries for the trunk to a 2960S?

I have a Nexus 5548UP trunked to a Catalyst 2960S. I have verified that spanning tree is working. I explicitly made the 2960S the root bridge for all VLANs as a temporary measure since it is trunked to an ASA for inter-VLAN routing (router…
Alain O'Dea
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Multiple catalyst switches

We're about to do a major office move, which will involve re-cabling everything in our premises. We're in two floors of a single office building, with 2-4 comms cabinets on each floor; each of these cabinets contains a Catalyst 3560; currently…
RainyRat
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Cisco Bridge and MAC address blocking

I have two locations connected with two Cisco 861 routers. They are connected using a bridge. The subnet is the same 192.168.100.x.The routers are on E-line connection from provider. Location A is the main (has the internet connection and the main…
HK78
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