LAN, Switching and Routing

The Cisco LAN, Routing and Switching Technical Support Forum gives you access to participate in tech discussions and go through documents on Cisco LAN Switch, LAN Router, VLAN, Cisco Catalyst, Catalyst 6500, Catalyst 3550, Jabber Client, Nexus 7000, and other related issues. You can browse through latest tech topics popular among the community.

 

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hi, assume there is a multicast sender, and this traffic is supposed to be received to 10 receivers only in order to prevent un-authorized IPs fro...
47 min 9 sec ago
Hi all, Does any one know where i can find the lastest ios that cisco as published for catalyst 2948G . Thanks Patcbr600
1 hour 8 min ago
I have a current situation where I need to add a subnet. I have created a secondary IP (192.168.101.253). Hosts on the primary (192.168.1.0) can se...
1 hour 9 min ago
Hello Is ospfv3   ipv4  address family available on the Nexus 9k - I can configure it on a Cisco ASR but the command in not available on the Nexus...
3 hours 10 min ago
Hi all ,  I just configured the the ICMP-Jitter in my Cisco switch .. My problem i can't set the size of packet .. So is there any way to add size...
5 hours 26 min ago
         
IP SLA 325 3 0 0 0
Routers 2 0 0 0 0
Switches 6724 569 6 1 0
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discussion netflow v9 packet.
Last Reply 9 years 7 months ago.
136 0 0 0 m.matteson
discussion what is exactly the receive/trasmit ring?
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176 0 0 0 jorgeangelalvar...
discussion 2940's go offline after multicast session
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122 0 0 0 jlhainy
discussion TAGGING DSL LINE
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106 0 0 0 carl_townshend
discussion question about tuning hsrp and spanning-tree
Last Reply 9 years 7 months ago.
195 0 0 0 jenseike
discussion Per Packet Load balancing with Sup720s
Last Reply 9 years 7 months ago.
107 0 0 0 rfox1
discussion PBX Mgmt Application Uses TCP Port 60000
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379 0 0 0 hopital_montfort
discussion Cisco Secure ACS and ISDN Router
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128 0 0 0 kingging
discussion interm. port hang up's on Cat 4948
Last Reply 9 years 7 months ago.
121 0 0 0 ROLAND CUNZ
discussion Mail Flow Issue - SMTP Traffic through IPSec Tunnel
Last Reply 9 years 7 months ago.
146 0 0 0 [email protected]
discussion 3m stacking cable not working on 3750's
Last Reply 9 years 7 months ago.
453 0 0 0 pstuder
discussion NTP > 2.5Ms dispersal. 4506, 31% CPU load average.
Last Reply 9 years 7 months ago.
228 0 0 0 [email protected]..
discussion broadvasts
Last Reply 9 years 7 months ago.
115 0 0 0 carl_townshend
discussion MPLS VRF
Last Reply 9 years 7 months ago.
133 0 0 0 carl_townshend
discussion PIX, ARP and Microsoft NLB cluster
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217 0 0 0 CyberDjinn
discussion Advanced EIGRP redistribution and filtering
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136 0 0 0 cachaves
discussion setting up windows authentication group
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144 0 0 0 carl_townshend
discussion VLANs or not with 2950ST-8 LRE - IOS 121-22
Last Reply 9 years 7 months ago.
108 0 0 0 seclabs06
discussion Problem while capturing Data in SNORT
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134 0 0 0 pillairamesh
discussion Layer 2 vlan bleeding
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230 0 0 0 jkrawczyk
discussion cisco works 2000 for linux
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discussion 6506/VPN routing problem
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133 0 0 0 GRANT GATHAGAN
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discussion Catalyst Express 500 DHCP
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discussion Metroethernet QoS..
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137 0 0 0 hyukin.kwon
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CEF
Last Reply 6 years 11 months ago.
1167
0.0
0 ITA Terms
Catalyst 4948
Last Reply 6 years 9 months ago.
1653
0.0
0 Ashley Price
Cisco_Catalyst_6506-E_Switch
Last Reply 6 years 9 months ago.
1898
0.0
0 Ashley Price
Cisco_Catalyst_6509-E_Switch
Last Reply 6 years 9 months ago.
2560
0.0
0 Ashley Price
SFP
Last Reply 6 years 11 months ago.
4185
0.0
0 ITA Terms
Add port To Vlan
Last Reply 6 years 11 months ago.
91145
5.0
0 ITA Terms
GARP
Last Reply 6 years 9 months ago.
7638
0.0
0 ITA Terms
GMRP
Last Reply 5 years 3 months ago.
4852
0.0
0 ITA Terms
How to Configure Private Hosts in a Cisco Catalyst 6500 switch
Last Reply 6 years 10 months ago.
2173
0.0
0 SunilKhanna
MAC Addresses used by the Cisco 3750
Last Reply 6 years 11 months ago.
1718
0.0
0 Oliver Gorwits
Module status shows unsupported module when installed in slot 10 of the Catalyst 4510R Switch chassis with Supervisor V
Last Reply 6 years 11 months ago.
1115
0.0
0 SunilKhanna
The power management and environmental monitoring features on the Cisco Catalyst 4000/4500 switches
Last Reply 6 years 10 months ago.
262
0.0
0 TCC_2
The %SIBYTE-CFC3-6-SB_RMON_OVRFL: RMON register 20 overflow on mac 1 error message receieved in Catalyst 6500 series switches that runs Cisco IOS system software
Last Reply 6 years 10 months ago.
1817
0.0
0 TCC_2
An active Supervisor Engine 720 crashes after a redundant supervisor is inserted in Catalyst 6500 and Catalyst 7600 series switches
Last Reply 6 years 10 months ago.
876
0.0
0 TCC_2
The "%C6KENV-SP-4-FANPSINCOMPAT: Fan tray and power supply 1 are incompatible error message appears in Catalyst 6500 series switches that runs the Cisco IOS system
Last Reply 6 years 10 months ago.
2060
0.0
0 TCC_2
Ports go into err-disable with the %PHY-4-SFP_NOT_SUPPORTED: error message when connecting Catalyst 3560 and Catalyst 3750 Switches using an SFP Interconnect Cable
Last Reply 6 years 10 months ago.
2925
0.0
0 TCC_2
How to remove or erase unused port channel configs in the Catalyst 6500 that runs the CatOS system software
Last Reply 6 years 10 months ago.
1573
0.0
0 TCC_2
Static routes are not displayed in show ip route command in Catalyst 6500 series switches
Last Reply 6 years 10 months ago.
5632
5.0
0 TCC_2
How to configure SPAN and RSPAN on Cisco Catalyst 4500 switches that run Cisco IOS Software
Last Reply 6 years 10 months ago.
11923
0.0
0 TCC_2
User receives periodic %SPANTREE-3-PORTDEL_FAILNOTFOUND syslog messages
Last Reply 6 years 10 months ago.
661
0.0
0 TCC_2
The %SYS-4-P2_WARN: 1/Blocked queue (tx) on port error message is displayed on a Cisco Catalyst 4000 series switch running CatOS
Last Reply 6 years 10 months ago.
483
0.0
0 TCC_2
How to enable VLAN communication between switches in different VTP domains
Last Reply 6 years 10 months ago.
2068
5.0
0 TCC_2
How to enable/disable SPAN reflector feature in Catalyst 6500 series switches with the FWSM module
Last Reply 3 years 4 months ago.
4389
0.0
0 TCC_2
Ping issues between service modules and the rest of the network with cross-module etherchannel in Catalyst 6500 Series Switches with Supervisor 720 that runs native Cisco IOS
Last Reply 6 years 10 months ago.
465
0.0
0 TCC_2
A self-signed certificate is added to a Cisco Catalyst switch that is managed through HTTPS
Last Reply 6 years 10 months ago.
2224
0.0
0 TCC_2
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blog SWITCH configuration
Last Reply 3 weeks 2 days ago.
19
0.0
0 julius78_baclaan1
blog IPv6 for future CCNAs (+) – Final Part.
Last Reply 1 month 6 hours ago.
141
0.0
0 Gerald C. Paciello
blog Catalyst 3850 and 4500 compatibility with power supply Phase-phase in IT mode
Last Reply 1 month 1 day ago.
9
0.0
0
blog Catalyst 3850 and 4500 compatibility with power supply Phase-phase in IT mode
Last Reply 1 month 1 day ago.
4
0.0
0
blog Loading an IOS on a switch via Xmodem
Last Reply 1 month 4 days ago.
79449
5.0
18 Aninda Chatterjee
blog How would a multicast be delivered with incongruent IP/MAC addressing?
Last Reply 1 month 1 week ago.
240
5.0
4 Peter Paluch
blog IPv6 for future CCNAs – Part II
Last Reply 1 month 1 week ago.
235
5.0
0 Gerald C. Paciello
blog IPv6 for future CCNAs – Part I
Last Reply 1 month 1 week ago.
353
4.0
1 Gerald C. Paciello
blog Spanning Tree Protocol, from a feature CCNA´s Perspective, by Gerald C. Paciello
Last Reply 1 month 3 weeks ago.
924
5.0
0 Gerald C. Paciello
blog How do etherchannel HASH algorithm works and LOAD DISTRIBUTION happen?
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28680
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blog Collector Security
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27
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0 marobbs
blog Who Should Attend The Kickoff Meeting?
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58
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blog Network Optimization: The 90-Day Plan
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76
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0 marobbs
blog Prepare for the Collector
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61
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blog Expert Insights: Network Optimization
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61
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blog Network Compliance Analysis
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57
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0 marobbs
blog Three Tips for a Successful Review Period
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53
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0 marobbs
blog Nexus 7000 ACL logging (OAL)
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19886
5.0
8 Robert Taylor
blog Active /Active Internet Load balancing with High availability ( AS Prepend Path)
Last Reply 8 months 1 day ago.
270
5.0
0 Ganesh Hariharan
blog Output drops due to QoS on 2960/3560/3750 switches
Last Reply 10 months 4 weeks ago.
30034
5.0
1 Shashank Singh
blog License Activation on 4500
Last Reply 1 year 7 months ago.
1149
0.0
1 sheraz butt
blog Nexus 7000 and IOS OSPF Loop Prevention and Interoperability
Last Reply 1 year 7 months ago.
7969
5.0
7 Robert Taylor
blog How to build the topology of an OSPF area
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3373
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5 Aninda Chatterjee
blog Booting Cisco Router from a TFTP server
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24939
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blog Configuring a frame-relay switch
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8844
5.0
7 Aninda Chatterjee
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