Cisco Switching/Routing :: 3020 / HP NIC Teaming And Not Receiving Echo Reply
Dec 4, 2011
I am working with a strange problem at the minute with HP's NIC Teaming with Transmision Load Balancing.We have a HP blade system the Server is connected to 2 cisco 3020's and then those 2 switches are connected to a 3750 Stack consisting of 2 Members.
Theres an LACP ether channel consisting of 4 Gigabit Ethernet Ports to each 3020 from the 3750 Stack.They both have exactly the same configuration and all ports are up and the channel looks healthy.
When setting the Preference order on the server if I set the NIC connected to the 1st Cisco 3020 as primary i.e. Tx/Rx then everything is fine.If I set the NIC Connected to the 2nd Cisco 3020 as primary then all seems fine i.e. I can ping it, it can access services outside its own vlan and the internet. It cannot however ping anything connected to the same subnet and VLAN on the 3750 Stack.
Doing a packet capture on a server connected to the VLAN on the 3750 stack I can see the Echo Requests coming in and the server sending an echo Reply but the echo reply never gets back to the server with the teamed NICs.
I did a Layer 2 traceroute and all looked fine, all the MAC Tables were good.I thought maybe it was a layer 2 loop causing the problems but I have checked and re-checked STP and can't find any problems. STP has picked up one intentional loop and blocked it.
I've raised a ticket with HP to see if they can point me in the right direction but I don't think it is a problem with there Drivers. It definately seems like a networking problem.
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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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Feb 10, 2013
We have 12 Catalyst Blade Switches 3020 for HP running IOS Version 12.2(55)SE. In the configuration of these switches I see the statement shown below.
no spanning-tree vlan 34,45-55,70,600,643,840,843-850
The 12 blade switches are configured as VTP clients and running VTP V2. I did not configure the statement shown above. It appered by itself. And even if I delete it, it will reapper. (The blade switches are interconnected to two 6509s. The two 6509s are the STP root and VTP bridges. I configure Vlans and STP on the 6509s).
why the statement above appers on the blade switches 3020s?
I mean I use other Cisco switches such as 3750s and 3560s and I have never seen the statement above appear by itself.
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Sep 24, 2012
Having a design where an IBM bladecenter has two Nexus 4001i switches and each switch is connected to a Nexus 5k vPC pair, is it possible to configure active-active nic teaming on the hosts (blades) considering that the Nexus 4k switches are unaware of each other and blade has one connection to each 4k over either emulex or qlogic 10G CNA?
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Sep 25, 2012
I am looking for some troubleshooting for some Cisco blade switches that are running high CPU. I have two 3020 blade switches in an HP chassis that each have two 1G links port channeled a pair of Nexus 5548s. Spanning tree has been constantly running about 35% of CPU for the last couple of weeks causing management SVI latency and CLI lag. The Port channel is the root port and the switches have no other connections.
Here are the things I have tried in troubleshooting the issue.
-Remove links from port channel so that one is forwarding and one is blocking -Removed the blocking link so that the switch only has one uplink. -Converted from pvst to rstp -Entered no spanning tree vlan <all vlans> so when you do show spanning tree there are no instances of spanning tree-Connected the single uplink to a different switch
Nothing has changed the continuous high spanning tree utilization of about 35%.
The 3020 switches server interfaces are configured as trunks for ESX running on the blades. It seems the only possible loop that could be causing this issue is on the ESX virtual switches, but I am not sure how that is possible. I say this because I have another pair of 3120s that have the exact same problem! However they were working fine (CPU normal) until the enclosure was populated and began switching traffic. After they began carrying a medium/heavy network switching load, the 3120s are running at a constant 56% spanning tree CPU utilization!
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Oct 11, 2012
Need clarification on the VPC with 5k and 2248 Fabric Extenders. My question is can each fabric extender uplink to two different 5ks, and at the same time, have servers connected to two both fabric extenders with a VPC.So basically, the server NIC will team with two different fabric extenders, and each fabric extender will connect to two different 5k's.
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Nov 24, 2012
I am experiencing inconsistent echo-replay from devices connected via VPC to Nexus 5500s while pinging from the Nexus exec prompt.
In some cases I receive normal response when pinging from one Nexus, but no response when pinging from the other switch. In other instance I receive normal response to one Nexus, and duplicate replays to the other. It looks like a VPC related bug. NXOS is 5.1.3.N2.1
5501# ping 10.12.12.232
PING 10.12.12.232 (10.12.12.232): 56 data bytes
64 bytes from 10.12.12.232: icmp_seq=0 ttl=253 time=8.585 ms
64 bytes from 10.12.12.232: icmp_seq=0 ttl=254 time=9.227 ms (DUP!)
64 bytes from 10.12.12.232: icmp_seq=1 ttl=253 time=1.011 ms
64 bytes from 10.12.12.232: icmp_seq=2 ttl=253 time=8.097 ms
64 bytes from 10.12.12.232: icmp_seq=2 ttl=254 time=9.429 ms (DUP!)
64 bytes from 10.12.12.232: icmp_seq=3 ttl=253 time=18.195 ms
64 bytes from 10.12.12.232: icmp_seq=4 ttl=253 time=8.807 ms(code)
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Feb 13, 2012
Need to clarify if ip sla icmp echo operation is supported in catalyst 3kx switches (ip services)? on the configuration guide, commands are available, but on the feature navigator, i can't find the feature, only ip sla video operation. i don't have a device to test on here.
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Nov 24, 2011
Our switch model is "Cisco Catalyst Blade Switch 3020 for HP" We are building HA (High Availability) Databases infrastructure.Currently, there are two nodes(hosts- servers) and two above switch for HA.
Oracle said we need to turn off the IGMP Snooping in order to use the multicasting for their interconnect communication.So my question is:
Q1> Is there any way to use Multicasting without turning off IGMP Snooping on Switch side?
Q2> If 'yes', how can we configure the switch for Multicasting ?
Oracle uses 230.0.1.0 & 224.0.0.251 IPs with 42000 range port for Multicasting communication.
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Aug 6, 2012
I try to connect a cisco blade switch 3020 to Nexus 2232 with etherchannel, but when I connect the second link a obtain flapping on vlans. [code] why the vlans are flapping ? it's something wrong on the config ? [code]
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Mar 15, 2013
I have an ASR 1002x connected to a 6513. Connection is from ASR Gig Copper SFP to 6513 Copper 10/100/1000 port. The ASR is recevinig Runt and input errors. I have removed the negotiation auto command on both boxes and hard coded the speed etc and still errors occur. I have also added the negotiation auto to both devices and also removed it with out hard coding the speed at and same results. Everytime I have seen these errors is has been to collision caused by a duplex mismatch.
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Jun 27, 2010
A specific switch port which happens to be part of a 2 switch 3750 Switch Stack is seeing multiple CDP packets from 3 extra switch port interfaces that are not directly connected. Noteworthy is that the far end devices have the correct CDP entries and I physically confirmed at least two of those connections that lead to the switch "upstream to the culprit switch". Tricky part is that its production so room for maneuvering is limited. At some point I disabled all Ports save for the real uplink and the problem momentarily disappeared. Re-enable the interfaces problem resurfaces. Is there an explanation, technique to eliminate the culprit with minimal disruption?
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Dec 6, 2011
We are receiving a large amount of output drops on 4 interfaces that connect to microwave wireless.This is playing up with our Management system. Saw a bug report but that was for 3750, not the IOS version but was a similar issue. [code] The output errors tend to happen at the same time. All ports are trunks however there are other trunks on the switch that are not having these issues. [code]
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Jan 26, 2012
I have a windows 7 laptop and i have bridged my wireless with my ethernet port on it, i have directly connected my ubuntu server to my windows 7 laptop via crossover, and ubuntu says its connected, but it will not recieve internet. I can get 2 windows pc's to bridge successfully, but not a linux machine. Is there some configuration im missing or something that i missed? the goal is to get internet for my ubuntu server.
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Mar 27, 2011
how to configure LAN teaming in Cisco ACS 1121. My requirement is to have virtual IP in the server with two physical IPs in the available 2 interface in the server.
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Nov 4, 2012
I have one Dell Optiplex 390 (windows 7 64 bit), which is having one PCI slot and 3 PCIe slots.The built in NIC cards doesn't support network teaming. I require 2 team in my system. Do you know any PCIe card with network teaming facility?
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Jan 22, 2012
Have a very peculiar issue with IP SLA. Firstly, the architecture.
1) There are two sites - A & B. Both have their own internet connection.
2) Sites A & B are connected via MPLS.
3) Both sites have the below topology.
3750 CORE --> FIREWALL -->ROUTER ---> INTERNET
4) 3750 has a Default route pointing to firewall .
5) MPLS router is connected to 3750. A default information is originated via BGP to MPLS at each location. So that default route is learnt as a backup path from any location if it has to lose its local internet.
6) IP SLA has been configured at each location to track the default route using icmp-echo to hit a public IP (i.e 4.2.2.2 as an example).
Issue?ICMP probes from Site-A via its local internet fails abruptly. I can reach the public IP mentioned above from my firewall pretty fine, but not from my 3750. Whenever i remove the tracking from the static default route & push in the plain default route without tracking, it works fine. Again, if i add the tracking back, it will work fine for an hour or so & then fails back again. To my bad, Site-B had recently gone offline due to some natural calamity. So, there is no other path for internet.
My config looks pretty simple
track 10 ip sla 1 reachability
!
ip sla 1
icmp-echo 4.2.2.2 source-ip 10.1.254.1
frequency 180
ip sla schedule 1 life forever start-time now
ip sla enable reaction-alerts
!
ip route 0.0.0.0 0.0.0.0 10.1.254.1 track 10
I am running IOS version 12.2(53)SE2 (IPservices images).
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May 7, 2013
Does the new UCS hardware change anything ?Can we bundle 2 NICs somehow to get interface redundancy ?If still not possible to configure that in ACS 5 itself:Can it enentually be done on the "hardware" level within the appliance firmware (UCS BIOS) ?(RHEL would provide NIC bonding,,, unfortunately its not accessable from ACS5 CLI)
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Jan 11, 2011
I have windows servers connected on cisco switch 4500 series. Issue is when server NIC configure with Teaming, some times servers gets not reachable, and after restarting the servers it gets reachable. Is 4500 series switch support the teaming software?
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Sep 13, 2011
Client: CISCO VPN Client
VPN server: Cisco Concentrator 3020 OS v 4.7
I want to get away from configuring split tunneling for security reasons. With Split tunneling and I am able to specify to which subnets the clients have access to. I do it defining "Network Lists"
When I modify the group and select "tunnel everything" under "client config" tab, the users then can access all subnets in the LAN. When I select this option the "Split tunneling network list" is grayed out
End goal is to make all traffic go thru the tunnel but be able to resctrict access to speficic subnets.
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Nov 25, 2012
I want to mark traffic on Cisco 3020 switch entering to interface gigabitEthernet 0/1 ingress direction with DSCP values. interface gigabitEthernet 0/1 is in access mode and in vlan 10.
This is my config:
access-list 1 permit host 10.10.1.1
class-map match-all ipclass1
match access-group 1
[Code].....
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Apr 16, 2013
I have ASA 5510 with soft version 8.4(5) installed. There are two interfaces:
IP 1.1.1.1/24 - inside
IP 2.2.2.1/24 - outside
I have configured PAT, so network 1.1.1.0/24 gets NATted to 2.2.2.2 address. Everything works fine, except I can't reach 2.2.2.2 via ICMP from the internet.
X.X.X.X 2.2.2.2 Deny inbound icmp src OUTSIDE:X.X.X.X dst OUTSIDE:2.2.2.2 (type 8, code 0)
But I have configured an access list allowing ICMP from any to any: access-list outside_access_in extended permit icmp any any
Thus address 2.2.2.1, which is binded to outside interface itself, is perfectly reachable via ICMP.
I've got two questions:
1) Is there a way to fix it? It will be handy for diagnostic purposes.
2) is it possible to configure the secondary IP address on the interface on ASA? I've read, that there are some complications.
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Jan 14, 2013
I'm having problem getting ICMP echo monitoring on outside interface to work. I've set: icmp permit host monitoring_station_adress outside but I still get:
%ASA-3-313001: Denied ICMP type=8, code=0 from monitoring_station_adress on interface outside. I'm trying to directly monitor ip on ASAs interface outside.
I have access-group tied to "in" direction on interface outside. Do I still have to put "permit icmp" rules despite the fact that icmp permit outside command is set?
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Nov 27, 2011
We have a Power Edge T310, sporting two Broadcom 5716C LOM's. We also have a Power Connect 5524 switch. Good opportunity to team the two network connections using 'Link Aggregation (802.3ad)'. Downloaded the most recent management software off the Broad com site. Installed BACS 3 on the Power Edge, running Windows SBS 2011, which has Windows Server 2008 r2 x64 as it's base.
Started BACS and tried to configure teaming. But there's no teaming-section in BACS. I removed, restarted the server and re-installed the Broad com software, but still no teaming section? How do I solve this?
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Jun 6, 2011
I have a router HUAWEI echo lifeH9520b Broadband wireless how do I find WPA security pass phrase?
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Nov 24, 2011
Our switch model is "Cisco Catalyst Blade Switch 3020 for HP"We are building HA (High Availability) Databases infrastructure.Currently, there are two nodes(hosts- servers) and two above switch for HA.Oracle said we need to turn off the IGMP Snooping in order to use the multicasting for their interconnect communication.So my question is: Is there any way to use Multicasting without turning off IGMP Snooping on Switch side?If 'yes', how can we configure the switch for Multicasting ?Oracle uses 230.0.1.0 & 224.0.0.251 IPs with 42000 range port for Multicasting communication.
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Dec 3, 2012
I am having problems with these types of 3G cards(EHWIC-3G-HSPA+7) from Cisco.We are using them on ships where we have a SAT connection and the 3G connection. Fail over between the two connections are handled by an IP SLA echo and a track on the cellular interface, towards an public IP where we have configured a static route to via the Cellular interface.
Once configured the connection comes up fine, the VPN tunnels comes up and all is good.But after some time the connection dies, the track goes down because no data goes through.a sh cell 0/0/0 all however say that the profile is active.
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Dec 13, 2011
In order to meet our requirements we had to configure PAT for TCP 80 on 2 external IP addresses to one internal IP in DMZ. TCP port 80 is being translated for both external IP addresses and it works as expected. However, since we have migrated to ASA both external IP addresses don't respond to ICMP echo requests generating following error:
%ASA-3-106014: Deny inbound icmp src outside:<Source IP> dst outside:<Destination IP> (type 8, code 0)
Previously we have been using Cisco router to achieve the same objective and it worked well.I have noticed that when I add "same-security-traffic permit intra-interface" to a configuration the message mentioned above stops appearing in a logs.
As far as I can tell ASA sends packet back through outside interface, despite the fact that appliance advertises its mac address in response to arp request for the same external IP address.Is there any way to make ASA realise that it should respond to ICMP echo requests on external IP addresses that have forwarding setup?
I do realise that ICMP would work in 1-to-1 NAT scenario, but we can't apply 1-to-1 NAT for 2 external IP addresses to point to one internal IP address.
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Apr 7, 2013
Region : Others
Model : TL-MR3020
Hardware Version : V1
Firmware Version : 3.14.2 Build 120817 Rel.55520n
ISP : LMT
Recently got a new USB dongle - Huawei e392. Initially it worked fine, had no problems, but then suddenly it stopped connecting. I tried everything, forcing 3g, forcing 4g, re-upgrading firmware and uploading a .bin file, nothing works.
It just tries to connect, gets disconnected, and unplugs the USB modem, then does it over and over again.
Here's the log.
1st day 00:00:21 DHCP NOTICE DHCPS:Recv REQUEST from 00:25:22:CE:0D:73
1st day 00:00:23 DHCP NOTICE DHCPS:Send ACK to 192.168.1.100
1st day 00:00:27 DHCP NOTICE DHCPS:Recv INFORM from 00:25:22:CE:0D:73
1st day 00:01:10 3G/4G NOTICE handle_card start
1st day 00:01:10 3G/4G INFO LTE MODEM = 0, status = 1, targetVendorID = 0x0, targetProductID = 0x0
[Code] .......
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Feb 7, 2013
How do I disable ICMP echo on ea4500 - I don't see anywhere either in Connect or directly on the router web interface that allows this.
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Nov 24, 2011
IGMP Snooping configuration for Multicasting on Cisco Catalyst 3020 Our switch model is "Cisco Catalyst Blade Switch 3020 for HP" We are building HA (High Availability) Databases infrastructure.Currently, there are two nodes(hosts- servers) and two above switch for HA.Oracle said we need to turn off the IGMP Snooping in order to use the multicasting for their interconnect communication. Is there any way to use Multicasting without turning off IGMP Snooping on Switch side?, If 'yes', how can we configure the switch for Multicasting ?
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Nov 24, 2011
IGMP Snooping configuration for Multicasting on Cisco Catalyst 3020
Our switch model is "Cisco Catalyst Blade Switch 3020 for HP" We are building HA (High Availability) Databases infrastructure. Currently, there are two nodes(hosts- servers) and two above switch for HA.
Oracle said we need to turn off the IGMP Snooping in order to use the multicasting for their interconnect communication. So my question is:
Q1> Is there any way to use Multicasting without turning off IGMP Snooping on Switch side?
Q2> If 'yes', how can we configure the switch for Multicasting ?
Oracle uses 230.0.1.0 & 224.0.0.251 IPs with 42000 range port for Multicasting communication.
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Apr 9, 2012
Currently we have a CISCO 3020 VPN Concentrator to terminate Lan-to-Lan tunnels and have our mobile workers connect via CISCO VPN client (300 users-employees and contractors-). Since this device is coming to an EOL this year we purchased a CISCO 5520 (below are the current licenses on it)
The licensing seems rather complicated, therefore this is my question:
- What VPN solution do you recommend for our users and contractors? it is my understanding the CISCO VPN client does not work with ASA 5500 series devices
- Is there a license needed to deploy VPN solutions for our remote users(employees/contractors)?
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