Update: I have brain stormed with my co-worker who only does a little bit if Cisco configurations but whose specialty is NetApp storage and servers. We are going to try and take 2 of the four links out of the port channel on both ends and place them into a new channel on the new 3850. This way the NetApp and switch will negotiate with the same unit. Debugging of the negotiation between the device produced some very cryptic information which lead us to a conclusion that maybe the devices are smart enough on the negotiating to know that the one link we are trying to move actually knows that it is not the same and therefore waiting to aggregate. I will post if this works. I hope that makes sense.
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Thank you for your response gpauwen. Yes, you are correct and I learned that the hard way several years ago when I struggled over and over with making port-channels work. Then I spoke with a Cisco TAC person one day and they told me exactly that and explained the best way to do it. I have not had a problem since (several years).
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Good Day everyone,
I am fairly good at configuring Cisco but this I cannot get working.
I have a working port channel on a 3750x 3 switch stack running version 15.0(2)SE2 with a 4 port port-channel, simple trunk configuration and LACP. It is connected to a NetApp storage unit and been working great for a number of years.
interface Port-channel25 description <= PortChannel2 PD2240A => switchport trunk encapsulation dot1q switchport trunk allowed vlan 17,21,300,302,303,2010 switchport mode trunk switchport nonegotiate
I am trying to replace the 3750x stack with 3850 3 switch stack running version 152-3.E3 with a 4 port port-channel, also simple trunk configured with LACP.
We are trying to move over one cable at a time so as not to have to take down the storage or network and after moving the first cable the port states that it is "waiting to be aggregated" and the port-channel has a SU status (up).
PD-3850-MDF-ServerRm1#sh run int po 26 Building configuration...
Current configuration : 133 bytes ! interface Port-channel26 switchport trunk allowed vlan 17,21,300,302,303,2010 switchport mode trunk switchport nonegotiate end
PD-3850-MDF-ServerRm1#sh etherch summ Flags: D - down P - bundled in port-channel I - stand-alone s - suspended H - Hot-standby (LACP only) R - Layer3 S - Layer2 U - in use f - failed to allocate aggregator
M - not in use, minimum links not met u - unsuitable for bundling w - waiting to be aggregated d - default port
A - formed by Auto LAG
Number of channel-groups in use: 4 Number of aggregators: 4
Group Port-channel Protocol Ports ------+-------------+-----------+----------------------------------------------- 26 Po26(SU) LACP Gi1/0/36(w) Gi1/0/38(D) Gi2/0/35(D) Gi2/0/37(D)
I have defaulted the interfaces, deleted the port-channels, etc twice and it just will not come up. I have also configured port speed, duplex, flow control with no success. I have even show run "all" for the interfaces and port channels and found no differences like encapsulation type, flow control, etc . Any thoughts?
I have scoured this forum and the Internet for solutions with out any resolution. Any thoughts are appreciated.
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I need an "action" statement that will send a UDP broadcast to port 1001 with a message of "restart". I have the rest of the EEM script created fine. I cannot seem to figure out how to do this. I have a BGP route that changes every once in a while and when it does the application seems to stop functioning correctly. A restart of the application fixes the issue. The vendor says that if I can send the UDP broadcast then he can program it to see the broadcast and restart iteself. I have created an EEM script that sees the syslog "%BGP-5-ADJCHANGE:" and currently sends an email. BUt we have to manually restart the app. If this is not possible within EEM could it be done with a TCL script and the EEM call the TCL script? I appreciate any words of wisdom. Thank you in advance.
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