Questions tagged [port-channel]
For questions about port channels (or EtherChannels) on network devices, where it is a port link aggregation technology or port-channel architecture used primarily on Cisco switches. For instance, you have two switches connected to each other, but the link is utilized 100%. Therefore you want to upgrade the inter link.
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ASA5555-X vlans through port channel not working
I'm havin a problem with my ASA when trying to pass vlans through port channel to a switch. The goal being here that all vlans that we have would go through a single port channel (4 1Gb links for load ...
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1
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Cisco Nexus vPC Portchannel issues
I'm currently facing a network issue between Cisco Nexus 93108 (9.3.11) on an LACP port-channel configuration.
The replica below help us to reproduce the issue we had (using 4x Nexus 9000v qcow2 image ...
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Cisco port channel identification through SNMP
on a cisco switch is there any way to identify, through SNMP queries, which interfaces are involved and configured in a port channel?
I did some experiment with commons MIB, without result.
Any idea?
...
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4
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Are all router ports both input and output or are ports divided in those two categories?
I've read that router input ports accept incoming packets and that output ports transmit the packets on the link.
However, a link can be used for carrying packets in both ways and in a router there is ...
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1
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Port suspended (No LACP PDUs) nx 9k switch -> C220 m5 ucs
We are setting up 2 nx 9k switches with port channel (LACP) enabled so we can have multiple links for redundancy. The two links in questions is eth1/3 on both switches going to UCS MLOM ports.
We are ...
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1
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409
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Switch Port channel down but firewall did not log the port down event
Can some one help me here if I am missing anything to check.
Issue:
Our Palo Firewall got a vwire configured with interfaces eth1/5 & eth1/6.
eth1/5 is directly connected to eth1/2 of cisco switch ...
0
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1
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267
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test etherchannel load-balance command doesn't work
I am trying to learn the etherchannel environment but when I enter this command it gives an error.
Switch#test etherchannel load-balance interface po1 mac 00d0.ba86.1e19 00d0.ba86.1e1a
^
% ...
3
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1
answer
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BGP running on VLAN interface or loopback0?
The switches mention below are all Cisco.
I got sw01 and sw02 running BGP peering with multiple service provider for our internal infrastructure, between sw01 and sw02 have a port-channel group 100.
...
- 526
0
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2
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Port cost relation to data rate capacity
Why is it that the allocated port costs lower for links with higher data rate capacity? Since a highter data rate capacity lowers the frame transmission timing, shouldn't it be more costly?
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Is it possible to make a truly active\active L3 VRRP\HSRP configuration between two Nexus in a vPC
I'm an admin that is used to working with older Cisco gear, the Catalyst 6500 and the like. This is my first time diving into the world of nxOS. I'm trying to create a truly active\active ...
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4
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LACPDU packets to pass through unmanaged switch
I have two buildings connected through the CAT6 cable and both ends have cisco-sg350 (capable of etherchannel). Due to the limitations of the cable both the switches are connected through a unmanaged ...
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1
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Is it possible to limit the number of active links in a channel group?
I've got 2x3750 switches with 4 physical links in between. I've bundled all the physical links using PAgP, but I want ONLY 2 links to be active at any single time. How do I go about this?
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120
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vpc/mlag block half of uplink?
We want to configure 2 Arista switches by mlag and connect 1 port channeled switch to both of arista's. so in this case, if one of our arista fail the other one will respond.
now my question here is ...
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Two switches, one uplink - best way to link them?
Overview
I have two Arista 7050SX switches. They don't support stacking. But I essentially will be using them as a stacked pair none the less (just means managing two individual switches).
They're ...
- 103
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How TCP find the correct application?
I am learning how TCP and application communicate with each other. I am not sure if my understanding is correct, I will use below example to illustrate my understanding and want to ask some questions.
...
- 135
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2
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Should portfast be configured on the physical interfaces or on the logical port-channel, or both?
I'm using a Cisco 3750 switch and have two physical ports configured in a port channel that connects to a router. Should I configure spanning-tree portfast on the physical interfaces or on the port-...
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Port Channel Hybrid Port Issue
I have a Dell Sonicwall NSA 4600 running the latest firmware with an Interface that's configured to have a secondary redundant port. This interface also has a VLAN sub interface assigned to it.
On ...
- 213
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1
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Difference between port-channel lacp fallback individual VS. static?
What is the exact difference between:
port-channel lacp fallback individual
port-channel lacp fallback static
2
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1
answer
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Cisco nexus vpc spanning-tree port type trunk question
I have very strange scenario here which you can see in diagram.
SW1/2 is Cisco nexus 3064PQ switch configured in vPC and those switch connected to SW3/4 ( HP 6120XG ) switches on HP c7000 blade ...
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4
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1
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spanning-tree port type edge trunk on port-channel vs physical interface
If i configure spanning-tree port type edge trunk on physical interface instead of port-channel does that work?
Or i have to do spanning-tree port type edge trunk on port-channel ?
Example:
...
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1
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what is the difference between port-channel and etherchannel?
As the title said, I do not make the difference between port-channel and etherchannel. For me they both aggregate ports in an Ethernet networks using Cisco parlance.
What subtlety do I miss ?
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Will Nexus load-balance method "src-dst-port" help balance link usage between two servers on same subnet?
I'm sending data on multiple ports evenly, but only receiving data on two ports at my receiver. Both servers (on the same tcp subnet) are connected to pair of Nexus 7K switches (I believe they are ...
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2
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Multi Chassis Ether Channel Best Practice
in our topology we have our Data Server(Multi Virtual Servers) and Backup Server exist in two different buildings and the current connection between them as below:
Connection explanation:
*1st ...
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2
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Port channel to two different switches
We had a technician move one of two port channel links from an old switch to a new switch before telling anyone. This left the new and old switch both connected to different links of the same channel ...
- 325
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1
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Add links to a port channel group without downtime
There are two trunk links with the same configuration connecting two switches. Currently they are independent links and one is blocked with spanning-tree. I would like to convert these to a single ...
- 325
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1
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Nexus VPC Peer Link - does it carry unicast traffic?
Read from the doc that the VPC peer link only carry multicast/broadcast traffic under normal circumstances ->
The vPC peer link carries control traffic between two vPC switches and also multicast, ...
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Possible to do a port-channel and STP with three 10Gbps fibre interfaces?
I have two sites that I'm planning to interconnect via three circuits carrying layer 3.
They will be presented via fibre.
The bandwidth of the lines will be: 1Gbps, 1Gbps, and 2Gbps.
Each SFP will ...
- 135
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1
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do port-channel members card module must be same?
port-channel 1 is active.members of port-channel are TenGig 1/1 and TenGig 2/1.
must Card type and Model on module 1 and 2 be same?
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58
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Create a trunk to a device with two NICs but one MAC address
I have a Linux device with two NICs, but they seem to share one MAC address. I want to configure a redundant network connection to a switch stack. Whenever I restart the end device, it is shutting ...
- 125
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Why Ether-channel Index for Both Ports is same ?How Hash algorithm will work?
I have created a Ether-channel between Cisco 35060G and 2960G for practice purpose and to test Load balance .
Here is a output from
sh ether-channel detail
and it shows Index for both the ports ...
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5
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2
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853
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How does link aggregation work in reality?
I'm concerned that I'm misunderstanding how aggregators work in the scenario below:
I have a project where I need 40 Gbps links between switches. My plan was to have my three switches use all four of ...
- 165
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0
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When connecting via com port, it doesnt ask login and password [closed]
I have successfully connected to Alcatel OmniPCX device via Serial COM port with help of XShell program to config interface.
It says that it is connected. It doesn's ask for login and password.
But ...
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520
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Ping to radio links attached to port-channels interfaces
I have a L2 port-channel, up and running, between two Cisco switches 3560 and 3750E. Traffic is load-balanced fine by src-dest-ip, but I have one problem: I can't ping the radio links connected to ...
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Does link aggregation uses the full bandwidth?
If I setup a 2x 1Gig ports with link aggregation, will I get 2Gigs bandwidth or less? how less?
thank you
- 123
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3
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Triggered removal of members of a port-channel?
Is there a way to monitor conditions (as with ipsla etc) in a switch (or specific to a given port channel) and trigger the removal/shutdown of a member from within a port-channel? Example - after x% ...
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Would multiple connections to a network make the connection faster?
So, in theory, if I connected to a network using, say, 30 ethernet cables from the same PC, wouldn't the upload speeds go up exponentially, because it would split the data over all the ethernet ...
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Help optimize a LAG with LACP and two different algorithms on each side
We have a 4Gb (4x1G) LAG trunk with LACP between two cisco switches (c3850<--->c4948) and i am noticing that it is not doing proper load-balancing. I found SW1 using src-dst-ip algorithm and SW2 ...
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