Cisco Switching/Routing :: 3548 XL - Cluster Switches Using CLI?
Nov 25, 2011
I am looking to cluster the aforementioned switches using the CLI. All the documentation that I have found all speak to performing the cluster configuration using CMS. I can only get to these switches via remote console so a GUI is out of the question for me. My ultimate goal is to configure these (2) switches for HSRP. Howver, everything that I found leads me to believe that I have to cluster in order to confiure the HSRP on these switches.
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May 13, 2012
Where I can find the visio icons for the cisco 3508, 3524 and 3548. They are NOT on the cisco visio icon download site.
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Oct 19, 2012
I have a small lab setup and I am trying to implement an IDS/IPS on the network. I have 3 VLANs setup (10, 20, and 30) with the switch and a router allowing for inter-vlan communication. Port FA 0/1 on the switch is setup as a trunk using 802.1Q connected to a single interface on the router.
I want to be able to monitor traffic on the trunk link on the switch and replicate that to the IDS/IPS host. Is there a way I can mirror traffic from FA 0/1 (the trunk link) to a regular access port on the switch which would connect to the IDS/IPS?
I have seen several articles on Cisco.com saying that you can have a source port as a multi-vlan link, but others say it is not possible. I did not have a chance to get into the lab to test this yet or else I would have.
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Jan 27, 2013
We have purchased two new Nexus 3548 switches. According to documenation the Nexus 3K does support vPC. When trying to enable the feature I get this:
nexus(config)# feature vpc
Error: vPC feature is not supported
nexus(config)#
We are running software version version 5.0(3)A1(1) and it looks like the latest version is 5.0(3)A1(2) so that's not much of a difference.Am I missing something here?
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Dec 18, 2011
I need a L3 conection between a VSS Cluster and 2 Nexus 7000. Is ECMP the best solution ?
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Nov 6, 2012
We have a vPC cluster of two Nexus 7009 that needs to be connected with a VSS cluster of two Catalyst 6509s. The VSS has been working fine for a while and the vPC cluster is new equipment.
Attached there is a detailed diagram of the connections; the VSS cluster connects the interfaces Ten1/2/8 and Ten 2/2/8 using the PortChannel 28 going to the the vPC cluster to the interfaces Eth 4/18 of each switch.
Both the vPC and the VSS are well configured; last night we tried to brought up the connection between the two clusters but only the first interface comes up within the etherchannel; the secondary one did not come up and shows (not receiving LACP packets).
We know Layer 1 is fine because if we remove the interface from the EtherChannel it does come up; but causes some STP loop and bring the network down; thus the solution is to form a EtherChannel.
At the VSS Clúster we see LACP packets being sent with sh lacp counters but we DO NOT see LACP packets being received in the interface of the secondary Nexus.
Right now, this is not possible to troubleshoot since it is a production enviroment; so I'm looking for problems with the configuration or recommendations to follow in order to apply them tomorrow night during a new maintenance window.
These are the configurations:
#######vPC cluster of Nexus 7009######
--N7K-1--
interface port-channel418
description Uplink 20 GE hacia VSS
switchport
switchport mode trunk(code)
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Feb 20, 2013
I have a 6500 serious switch that one port (portfast enabled) hold a server .This server has sort of a Cluster configured for high availability .
During primary server failure the failover server acquires the cluster IP address (ie virtual IP).
Cluster IP 192.168.10.1
Primary server =192.168.10.2 Failover server =192.168.10.3
when failover happen , i am unable to learn arp. need to reboot the server for arp . After reboot i am getting different mac address(secondary) with cluster IP.
query:-normal clustering how mac address generating(means logicaly any mac address will be created or LAN card mac address)? Is ther any issue with portfast configuration(with out portfast configuration TCN will generate and max age timeout decrease 15 second from 300second) ?
Note : we checked a scenario same ip address with two system(ipconflit) and removed arp learned system from network and same thing happen we need to clear the arp manually in L3switch
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Jun 21, 2012
I support an active VSS cluster using 2 x 6509E chassis with single Supervisor 3C modules in each chassis. I want to replace these with Supervisor 2T modules. All my service modules and line cards are supported with the Sup2Ts (I will also be implementing 6908 modules). Is there a document on the Cisco site for this? I haven't found one though I can find plenty that describe how to do a software upgrade.
(Note, I have a 3rd (non VSS) 6509E chassis that is also part of this core network and that will maintain VTP/V LAN's etc).
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Jul 14, 2011
We have two Web Servers and configured as Network Load Balancing in a cluster for failover.
WEB1 IP: 192.168.1.50
WEB2 IP: 192.168.1.51
Both configured with Cluster IP: 192.168.1.100 on Multicast mode.
TEST ON LAB USING ORDINARY 10/100 UNMANAGED SWITCH I can ping all the IP addresses on the LAN and when I http://192.168.1.110 on any PC on the LAN works no problem.
TEST ON PRODUCTION USING CISCO SG200 50/50 PORT SWITCH I can ping all the IP addresse on the LAN and when I http://192.168.1.110 on a different machine i did not work, but on the server itself will work as expected.
NOTE: Both tests are on LAN only.
I wonder if this is something to do with the switch because of Cluster IP MAC address. Do I need to configure something on the switch?
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Jan 16, 2011
have 2 routers connected in cluster ith serial dte link. screenis locked. I need to draw a topology of Internet cluster, but i don't know how to discover whats is in it, because i don't have set ip
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Nov 18, 2011
If I have two stackable switches one switch uplinks to one 6509 core switch and the other connection uplinks to another 6509 core switch, and also the other stackable switch does not connect to the core switches. Because I am using hsrp and also we are not using vss then one uplink to the core is not in used only ones is so then how does creating an etherchannel between does two uplinks to both core switches benefit me in anyway such as more bandwith and using both uplinks at the same time or I'm I wrong?
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Nov 14, 2011
If I have two stackable switches were only one stackable switch has two uplinks one uplink goes to one core 6509 switch and the other uplink goes to the other 6509 core switch can a Layer 3 etherchannel be used if each uplink go to a different core switch, by the way hsrp is running between both switches and also can you give an example how data will be routed from the stackable switch through the ethernetchannel to one of the core switch accross the WAN to another core switch?
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May 6, 2011
I am a student pursuing a CCNA certification currently. I recently came across a lot of 3548 xl switches. They power up fine, post with out problem and load flash. The problem I am running into is that the console is password protected. I have found the password recovery procedure for this switch, but it requires the use of the mode button. I have tried this process several times and the flash file is loaded with the startup config file. How do I perform a password recovery on a switch with a broken mode button?
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Dec 11, 2012
so I work with a debt consolidating company. We have about 300+ users, and som of the issues I get are network issues from random users. The issue is that there is a lost in connection and they are completely disconnected from the network. I look at the port number labeled at their cubicle and check the switch they are connected too and this is what I see on the switch. Which by the way is a dell PowerConnect 3548 switch.URL
After removing from those ports and placing the patch cable into another port it works normally. But after a few days this issue returns only to find it with a different user.
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Apr 16, 2002
I have a switched network of C2980 & C3548 switches with multiple VLANs. I would like to understand the difference between Multi- VLAN ports and trunk ports. What circumstances would dictate using one over the other? If I configure the router port as Multi- VLAN, does the router still require sub-interfaces?
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Mar 11, 2012
We have a pair of N7K distribution switches connected to a pair of N7K Aggregation switches.We run vPC on both pairs of n7k's.
-n7k-d1 has two interfaces in a Port-Channel connecting to n7k-a1 & n7k-a2. (PC1)
-n7k-d2 also has two interfaces in a Port-Channel connecting to n7k-a1 & n7k-a2. (PC2)
My problem is that Spanning-Tree is blocking PC2 and all traffic from n7k-d2 is traversing the Peer-Link before reaching the Aggregation layer. Is this the best design for connecting two pairs of n7k's with vPC or if a better design would be to connect all 4 links into the same Port-Channel and vPC?
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Sep 13, 2012
Why Cisco implements so much switching capacity in their switches Obviously,16 Gbps of permutation performance is too much for the 8,8 Gbits (24*200+2*2000) needed by ports so why they put so many bandwidth?
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Aug 5, 2012
I'm trying to configure intervlan routing between a cisco 2801 router and HP/Amer switches. Using int fa0/1 and subinterfaces I was sure I had it configured correctly, but I cannot ping the default gateways when I place a host in a particular vlan. Below is what I have configured.
HP switch - port 9 connects to fa0/1 on 2801
ip default-gateway 10.1.100.1
trunk 9 Trk1 trunk
trunk 10 Trk2 trunk - to another switch
[code].....
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Nov 21, 2012
I am using a 3750 as a default gateway for multiple Vlans on a few 2960 switches. The trunk lines are configured and working and I have assigned ip addresses to each of the Vlan interfaces on the 3750. My issue is that I can only ping the ip address on the Vlan interface of the 3750 if I have a working computer plugged directly into the Vlan on the 3750. I only have 3 vlans on the 3750 that have hosts directly connected (vlans 2, 10 and 40) the other vlans ( 20 and 70) don't have any clients plugged into them on the 3750 but the hosts reside on 2 different 2960s that connect via trunk ports. How do I keep the vlan interface on the 3750 switch pingable when I don't have hosts directly connected in that vlan on the 3750? (yes, I have enabled ip routing on the 3750)
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Oct 17, 2011
I have a simple design with 3750. I configured a route-map which define a next hop. I defined this route-map on a policy on a vlan interface.When I test some ping and a debug ip policy and it seems that my policy never match.Is there any mechanism that prevent the switch from using PBR? I think of CEF .
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Sep 5, 2012
I have a simple design with 3750.I configured a route-map which define a next hop.I defined this route-map on a policy on a vlan interface.When I test some ping and a debug ip policy and it seems that my policy never match.Is there any mechanism that prevent the switch from using PBR?
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Apr 11, 2012
Is L3 ip routing on by default in 3550s? If so is the "ip routing" command visible in the config file? If no - I assume that one would enable L3 routing with that config command.In general terms are there any IOS devices where ip routing is enabled and one would not see the "ip routing" command in config. I.E. if that command is not visible in the config could you assume there is no L3 capablity in that device?
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Aug 31, 2012
CiscoSwitch1(4506) has 3 VLANs(12,13,14) and Switch2(4948) has 3 different VLANs(22,23,24) and IP routing has been enabled in both switches with SVI interfaces for each vlan. intervlan routing is works fine.Now there is a requirement to connect these switches together. Vlan 12 on the Cisco switch 4506 has to be made available from vlan 22 from Switch2(4948). basically Vlan 12 is having a multicast source (225.0.0.0 & 226.0.0.0) which should be accessabile from vlan 22 of cisco switch 4948.I got 2 ideas
1) Create a trunk between these switches and configure L2 vlan(12) in cisco 4948...i know theoritically it should work but what my concern is Ip routing enabled in both switches will it create any issues? is it a gud solution to this requirement?
2) Create a separate IP network on the ports connecting to both switches and set up routes to the networks.ex- console(config)#ip route 192.168.10.10 255.255.255.0 192.168.20.1.
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Jan 21, 2013
I have a small campus network using 3750 stackable switches and a 3725 router (see diagram below). Currently the 3725 router is handling inter-vlan routing for the campus and it looks like it's not able to handle the amount of traffic we're pushing. The router CPU sometimes hits above 90% due traffic load. What I would like to accomplish is move L3 process over to the 3750 MDF stack and the IDF1 stack. I am thinking creating SVI's on both MDF stack and IDF1 stack, run HSRP between the two stacks and may be do load balance traffic between the two stack as well.
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Jun 18, 2012
I have two C2960 switches which have the management VLAN for other switches. These two switches are connected with each other via portchannel. Now the mgmt0 of few switches is connected to switch 1 and few other connect to switch 2.I have also connected the mgmt0 of switch 1 to an access port of switch 2 and vice versa.However in this set-up I am unable to reach switch1 via the mgmt0 IP address. However I can reach the mgmt0 Ip address of switch 2.I can also reach switch 1 and 2 via their int vlan IP.Has some one else experienced this and is their any specific reason why mgmt 0 IP address of switch 1 is not reachable.I have tried doing similar set-up on C3750, but have acheived same result i.e. I am unable to reach mgmt0 of switch 1.
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Nov 30, 2011
We are seeing the cpu on 2 of our C500 switches running at 99% with the following process causing the issue,.
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Apr 25, 2013
I have a server windows 2008 that I would like to have a nic teaming configuration, the server has two nics, each nic is connected to a different switch. One is connected to cisco 2960 and the other is connected to cisco 2950. I have read here in forums about nic teaming but using the same switch. I have not found using different switch. Is this possible?
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May 15, 2013
I would like to know how to stack 2 switch cisco 3550 that IOS C3550-ipservicesk9-mz.122-44.SE6
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Mar 12, 2013
We have 3 layer LAN architecture, layer 1 of 6500(IP routing), layer 2 of 4500(L2 switch only), layer 3 of 2960(L2 Switch)In a Single (2960 and 4500) Switch Port Avaya IP phone and PC are connected.Now, the requirement is that, Qos need to be configured for Voice traffic and Data traffic should be in default class of service.We plan to use COS value in Switch 4500 and 2960. We made a sample configuration as below
### For 4500 Switch
class-map match-all VOIP-Access-2MB
match cos 3 5
class-map match-all VOIP-Uplink-20MB
match cos 3 5
[code].....
check these configurations are correct as per standard and if there is any other method of configuration?What need to be configured in L3 Switch(6500)??In 2960, it doesn't support ingress QoS, what impact it will make when compare to 4500? do users experiance any difference?
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Jun 11, 2008
I have one 3550 switch and i upgraded from 12.1 to 12.2(44)SE . But "tclsh" command is not enabled on this version. As per Cisco, 12.2(25)S is enough to enable TCL interpreter.
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Feb 15, 2011
I've upgraded a 6509 switches wich are running in VSS, from IOS 12.2 (33)SHI1 to 12.2 (33)SHI5. After that I'm facing the folowing log messages periodically. [code] I know that this is a diagnostic result from TestUnusedPortLoopback feature. But this interface is disabled (shutdown).
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Jan 8, 2012
I want to setup HSRP between three 6509 switches with a single virtual ip for all the three switches.
know if its possible and share any site or config.
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Jun 11, 2013
We have an issue where switches are failing weekly in a switch closet. In the past month we have gone through several 3750G switches and a couple 4510s. The power supplies have eventually made a popping noise and had to be replaced. on the 4510s we've tried two chassis and gone through several power supplies.The switches have been behind UPS systems so should be receiving conditioned power.Could load from the PoE devices really be causing this? I wouldn't think it's power since they are behind a UPS.
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