LACP suspended between N7K and N2K
Hi
we have a creation trouble between N7K and N2K on port-channel, the port-channel is suspended because LACP receive PDUs
With FEX you use don't use the mode active.
Interface eth5/33
switchport mode fex-fabric
channel-group 70
The FEX uses a "Fabric" header on the link, and doesn't require LACP. You can use LACP on any host ports on the FEX, just not on the fabric links.
Similar Messages
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Duplex mismatch between N7k and 5508
Hi All,
I met a duplex mismatch issue in our new DC.
The port configuration on the N7k and controller is the same as in other DC
Only difference is version of the NxOS on the N7k.
On N7k 5.2(1) works
On N7k 5.2(7) i get below logs :
2013 Aug 21 22:23:24 xxx %CDP-4-DUPLEX_MISMATCH: Duplex mismatch discovered on Ethernet10/8, with LAGInterface0/3/1
2013 Aug 21 22:24:24 xxx last message repeated 8 times
2013 Aug 21 22:25:24 xxx last message repeated 8 times
2013 Aug 21 22:27:24 xxx last message repeated 16 times
2013 Aug 21 22:29:24 xxx last message repeated 16 times
Port configuration :
interface Ethernet10/8
description WLC 5508-1
switchport
switchport mode trunk
switchport trunk native vlan 50
switchport trunk allowed vlan 50,500,570
spanning-tree port type edge trunk
channel-group 1100
no shutdown
xxx# sh int e 10/8
Ethernet10/8 is up
Dedicated Interface
Belongs to Po1100
Hardware: 10/100/1000 Ethernet, address: 0006.f6b1.d2f7 (bia 0006.f6b1.d2f7)
Description:WLC 5508-1
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA
Port mode is trunk
full-duplex, 1000 Mb/s
Controller 5508 version 7.3.112.0
Controller ports :
Port Summary
STP Admin Physical Physical Link Link
Pr Type Stat Mode Mode Status Status Trap POE SFPType
1 Normal Forw Enable Auto 1000 Full Up Enable N/A 1000BaseTX
2 Normal Forw Enable Auto 1000 Full Up Enable N/A 1000BaseTX
3 Normal Forw Enable Auto 1000 Full Up Enable N/A 1000BaseTX
4 Normal Forw Enable Auto 1000 Full Up Enable N/A 1000BaseTX
How can i fix this issue ? Ports are set up and show the same - 1000 / Full
the messages are annoying as loggs are almost full of them.
Thank you in advanceHi Matthew,
The issue is related to bug -> "CDP duplex mismatch when using LAG on 5508 & 8510 WLC” (CSCuc94082)
The fastest way to solve (workaround) this is disable cdp on the controller by executing following command: config cdp advertise-v2 disable
Hope this helped you
Regards,
Radek -
Multicast clustering IBM servers with N7K and 2k
i have two severs IBM are working as a cluster and connected to Fiber fabric extender 2K using VPC as per attached diagram
two IBM server are woriking fine for network connectivity with N2k but the servers have a multicast named ( power HA 7.1) to work as acluster
but i tried to configue multicat in N7K and N2k to server working as acluster but the servers are not working
please advice me about the configuration in N7K and N2k to working IBM servers as a cluster .One option is the IGMP querier:
config t
ip igmp snooping
vlan 2
switch(config-vlan-config)# ip igmp snooping querier 10.0.10.253
(or a good source address of the interface)
The other option is run PIM on the VLAN interface:
feature pim
vlan 2
ip pim sparse-mode
Both has the same purpose: combined with IGMP snooping, the L3 interface will flood the VLAN with IGMP queries that traverse the inter-switch links. As a result, the inter-switch links will be included in the snooping port list. In turn,
packets destined to 228.5.10.5 will be sent out the inter-switch link and reach the other server.
Without the IGMP queries, 228.5.10.5 packets will not be sent from one switch to the other as it is not in the 224.0.0.0/24 range. -
LACP between SRW2048 and Cisco 3750
Hi,
I have been trying to set up a LACP link between my SRW2048 and Cisco 3750 using two gigabit ethernet links.
Whenever i plug one cable in the interface does not come back up.
I have already sucessfully been able to create a LACP link between the 3750 and a catalyst 2960 for two cables.
Both interfaces at both units are set up as trunks for Vlans 1 (default and untagged), 4, 99, 101, and 102, then the Port-channel / LAG set also as a trunk with the same vlans.
Does anyone have any ideas why the interface is not even initialising?
If i plug a SRW2048 LAG'd interface into a normal access (vlan1) port on the 3750 it works fine, and vice versa with the 3750 to the SRW2048.
Below is a extract of logs from both:
-- Log from SRW2048
1 2147483579 07-Oct-2008 16:12:24 Informational %LINK-I-Up: ch1
2 2147483580 07-Oct-2008 16:12:24 Informational %LINK-I-Up: Vlan 102
3 2147483581 07-Oct-2008 16:12:24 Informational %LINK-I-Up: Vlan 101
4 2147483582 07-Oct-2008 16:12:24 Informational %LINK-I-Up: Vlan 99
5 2147483583 07-Oct-2008 16:12:24 Informational %LINK-I-Up: Vlan 5
6 2147483584 07-Oct-2008 16:12:24 Informational %TRUNK-I-PORTADDED: Port g4 added to ch1
7 2147483585 07-Oct-2008 16:12:19 Informational %LINK-I-Up: g4
## Plugged back into standard vlan1 access port ##
## Plugged into LACP enabled port on 3750 ##
## Unlugged from standard vlan1 access port ##
8 2147483586 07-Oct-2008 16:11:10 Warning %LINK-W-Down: ch1
9 2147483587 07-Oct-2008 16:11:10 Warning %LINK-W-Down: g4
10 2147483588 07-Oct-2008 16:11:10 Warning %LINK-W-Down: Vlan 102
11 2147483589 07-Oct-2008 16:11:10 Warning %LINK-W-Down: Vlan 101
12 2147483590 07-Oct-2008 16:11:10 Warning %LINK-W-Down: Vlan 99
13 2147483591 07-Oct-2008 16:11:10 Warning %LINK-W-Down: Vlan 5
14 2147483592 07-Oct-2008 16:11:10 Warning %TRUNK-W-PORTREMOVED: Port g4 removed from ch1
-- Log from Catalyst 3750
mercury#terminal monitor
mercury#
Oct 7 15:10:44: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet 1/0/17, changed state to down
Oct 7 15:10:45: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/17, changed state to down
Oct 7 15:11:54: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/17, changed state to up
Oct 7 15:11:55: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet 1/0/17, changed state to up
mercury#The linksys documentation is a little thin on the ground all over.
However, if i have got this correct the Admin key needs to be the same for all interfaces in the same LAG for one switch i.e not the same for both ends of the cable?
As for the priority, i assumed this was to do with how the switch dealt with with interfaces were to be active if there were more in the group than could be allowed - to allow for backup links. Is this correct?
Thanks for your reply. -
Strange NX-OS behaviour (CDP between N7K VDCs)
Hello guys,
I wasn't quite sure where to start that topic, but decided to drop it here as I found this specific related to Nexus 7000.
Right, so the scenario is as follow:
[N7K-1-1]------[N7K-2-1]
| \ / |
| / \ |
| / \ |
[N7K-1-2]------[N7K-2-2]
These links are all physical, doubled, port-channel links, terminated on M2XL module.
Native vlan I've been using in Core is 3967, and it does traverse tagged (vlan dot1Q tag native in global config).
For some reason, I am unable to get two cdp neighborship between N7K-1-1 and N7K1-2 (which are both on same physical chassis but in different vDCs). Everything else works just fine (L2/L3). I have L3 OSPF adjacency working just fine there.
N7K1-1 can see N7K2-1 & 2 with absolutely the same configuration. The configuration I've got is as follow:
vlan dot1Q tag native
vlan 3967
name native_3967
interface port-channel3
description Po3-N7K-1-1-N7K-1-2-Po3
switchport
switchport mode trunk
switchport trunk native vlan 3967
switchport trunk allowed vlan 202,3967
logging event port link-status
logging event port trunk-status
#show port-channel summary interface po3 | egrep ^3
3 Po3(SU) Eth LACP Eth6/3(P) Eth6/4(P)
interface Ethernet6/3
description Po3-N7K-1-1-N7K-1-2-Eth6/3
switchport
switchport mode trunk
switchport trunk native vlan 3967
switchport trunk allowed vlan 202,3967
channel-group 3 mode active
no shutdown
The configuration is 1:1 on the otherside.
Now, the interesting part, absolutely the same configuration, applied on links to N7K1-1/1-2 - works just fine. CDP traverses and everything is good..I found, empirically, that if I add vlan 1 to the trunk - CDP pops-up...
What do I miss...?
Here are some more additional snippets, which might help:
Ethernet6/3 is up
CDP enabled on interface
Refresh time is 60 seconds
Hold time is 180 seconds
# show int eth 6/3 switchport
Name: Ethernet6/3
Switchport: Enabled
Switchport Monitor: Not enabled
Operational Mode: trunk
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 3967 (native_3967)
Trunking VLANs Allowed: 202,3967
FabricPath Topology List Allowed: 0
Administrative private-vlan primary host-association: none
Administrative private-vlan secondary host-association: none
Administrative private-vlan primary mapping: none
Administrative private-vlan secondary mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk private VLANs: none
Operational private-vlan: none
# show int po3 switchport
Name: port-channel3
Switchport: Enabled
Switchport Monitor: Not enabled
Operational Mode: trunk
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 3967 (native_3967)
Trunking VLANs Allowed: 202,3967
FabricPath Topology List Allowed: 0
Administrative private-vlan primary host-association: none
Administrative private-vlan secondary host-association: none
Administrative private-vlan primary mapping: none
Administrative private-vlan secondary mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk private VLANs: none
Operational private-vlan: none
# show cdp neighbors interface ethernet 6/3 - 4
Note: CDP Neighbor entry not found
# show cdp neighbors interface ethernet 6/1 - 2
Device-ID Local Intrfce Hldtme Capability Platform Port ID
N7K2-1 Eth6/1 139 R S I s N7K-C7009 Eth6/1
N7K2-1 Eth6/2 139 R S I s N7K-C7009 Eth6/2
interface Ethernet6/1
switchport
switchport mode trunk
switchport trunk native vlan 3967
switchport trunk allowed vlan 2-3967
channel-group 1 mode active
no shutdown
# show int eth 6/1 switchport
Name: Ethernet6/1
Switchport: Enabled
Switchport Monitor: Not enabled
Operational Mode: trunk
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 3967 (native_3967)
Trunking VLANs Allowed: 2-3967
FabricPath Topology List Allowed: 0
Administrative private-vlan primary host-association: none
Administrative private-vlan secondary host-association: none
Administrative private-vlan primary mapping: none
Administrative private-vlan secondary mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk private VLANs: none
Operational private-vlan: none
# show run int po1
interface port-channel1
description Po1-esmdrrv1-esmdrrv2-Po1
switchport
switchport mode trunk
switchport trunk native vlan 3967
switchport trunk allowed vlan 2-3967
logging event port link-status
logging event port trunk-statusI think you are running into this bug : CSCua71923
http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCua71923 -
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exporting
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2 /
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2 /
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What is the difference between M80 and N80ie?
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korngear wrote:
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\\en.wikipedia.org//
@Korngear
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