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Forum Posts
I have read in CISCO CCNP book that when a switch first turns on, it put all it's ports into Blocking state for 20 sec in which it will only hear the BPDUs from other switches. But if all the switches are turned on simultaneously, how will they get ...
Hi, We are having a 6509 switch.Which got crashed 2 days ago resulting in the power down of 2 modules while the sup card was running fine.Finally whole chassis got rebooted and all line cards came up after that.We have tried runnign complete diagnosi...
v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-s...
Resolved! LAG and trunks
I've recently began building a couple of switches up to replace some Dell switches that have been in my environment and been fairly troublesome. I wish I had the funds to really build a good L2 network, but I don't, so the layer 2 of my network is g...
Resolved! L3 switch configured as router
Hi all,I really appreciate this forum :-) And I would like to share my question regarding L3 switch routing function.I have exactly this situation (please see picture) There are 5 L3 switches 3750-X series. Every switch is in different subnet. Let's ...
Resolved! Cisco Stack with 3548 and 3524 XL
Hello,I have just got 2 of these switches, plugged the gigastack modules in to each switch and then plugged in the gigastack cable between the switches in point-to-point mode.Do I have todo anything else with the switches to configure in a stack or i...
Resolved! What is the ethertype for STP?
Hi,I don't see the ethertype for STP in the file:standards.ieee.org/regauth/ethertype/eth.txtWould it be similar to the protocol identifier in 802.1D, that is 00-00?Thanks for your opinion,best regards,Michelot
Dear All ,Im running OSPF between two of my router and there is two links between this routers (say R1 and R2) .R1 (Area 0------------------R2(Area 1...NSSA)Now my OSPF relationship is flapping . I already put the below settings on both side of my in...
Resolved! source-sensitive routing -PBR
Hello All,I have three subnets 192.168.1.x/24, 192.168.2.x/24 and 192.168.3.x/24 they are on 4507 with HSRP configurationnow i want for one subnet 192.168.1.x/24 default route should be towards 10.15.0.10 and for rest of two newtworks 10.15.0.11acces...
Hi,I am trying to figure out a way to assign DHCP addresses to a vlan without an ip address using IP helper.The goal of this is to only allow bootpc packets from vlan X to reach the internal DHCP server while all other traffic is treated normally.Vla...
Resolved! Dual SUP 720 in one Chassis
HI,i have now two Sup 720 installed in one Chassis configured to work as HA mode.each SUP 720 has two 10G uplinks.the Question isCan I use the 4 10 G Uplinks in both Supervisors at the same time??if so which mode of configuration can i use?thanksAhme...
Hi,I have doubt about vss configuration ................. If i want to configure the VSS , i need to follow the below procedure .... 1) first i need to configure the vss domain with switch virtual domain < domain number > with switch ID and with " ...
hello'this is a small office with 15 computers. there is no domain users login to pcs. no servers. DNS and mail servers are hosted outside. 1, usrs access internet via CISCO WI-FI ADSL gateway . ISP provide dynamic IPS no static IPS.REQUIREMENTS1. S...
Hi Everyone,I am facing an issue with RSPAN configuration where source and RSPAN destination vlan get blocked due to spanning-tree Port VLAN ID Mismatch error on uplink switch.Network diagram 3750E (IOS 12.2-55) 3750 (IOS 12.2-55)-----...
Hello everybody,I've got a SLM 2008 smart switch. I've set the following options to switch port 1 which has the role of being a trunk port.1) Enable Tx force untag: disabled2) Ingress filter: disabled3) Acceptable frame type: tagged only4) PVID: 1All...
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