Questions tagged [cisco-nexus]

For questions about the Cisco network product line, called Nexus. For instance, Cisco Nexus 3000, 4000, 5000, 6000, 7000 and 9000.

14 questions with no upvoted or accepted answers
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Cisco nexus 9396 rebooted with reason xbar_client

Today my one of cisco nexus 9396PX switch got rebooted and this is what i found, based on following logs what could be wrong? We don't have Cisco support for this switch, trying to see if i can get ...
3
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0answers
330 views

TCAM utilization on Nexus 9396 switches

I have Cisco Nexus 9396 switch which is running L3 mode and i have configured bunch of IPv4 access-list in Ingress for firewalling to block certain traffic. I am reading about TCAM and wanted to ...
3
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4answers
98 views

Cisco N9K - Down an interface in response to another interface going down?

I currently have my transit providers plugged directly into my router. I really like this arrangement because when the ISP goes down this typically downs the interfaces which results in BGP peering ...
2
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0answers
311 views

Cisco nexus spanning-tree logging to syslog

I am trying to send my spanning-tree events to remote syslog but somehow it doesn't work, This is what i have in my config. N3K# sh run | grep logg logging level spanning-tree 7 logging server 172.29....
1
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1answer
68 views

question about bypassing access switch

we have 2x Juniper QFX as access switch (In Virtual chassis mode) and we have 16x Rack, we have 1x 10Gbps sfp+ uplink to each juniper so each rack has 2x 10g towards 2x Juniper qfx access switch and ...
1
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0answers
32 views

VETH ports not working for cisco vIOS L2 devices (vios-l2 and nx-osv) using kvm/qmeu for virtualisation

Ok, so I've been toying with veth links for my Cisco routers and they have been working fine. However when you throw in a virtual switch like the Cisco nx-osv or vios l2 image, using veth interfaces ...
1
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0answers
226 views

802.1Q Tag mapping using Private VLANs on Cisco Nexus 3524

I'm struggeling with a VLAN mapping issue on a Nexus 3524 Switch. My setup: Downlink router<---Dot1Q 1901--->NX3524<---Dot1Q 493--->Uplink router I already figured out that basic 1:1 ...
1
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0answers
284 views

Nexus OS IP SLA Object tracking

I have not configured IP SLA object tracking on nexus OS before and its looks a bit confusing. Can someone help me interpret the following configuration? This example shows that object tracking is ...
1
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1answer
440 views

NXOS DHCP Relay - overwriting Option 54 (Server Identifier) differently in DHCPDISCOVER vs. DHCPREQUEST?

I'm trying to sort a DHCP relay problem in a VLXAN/EVPN environment (Cisco N9K, NXOS 9.3.2). We seem to be able to get DHCPDISCOVERs through to the server and DHCPOFFERS back from there. DHCPREQUESTs ...
1
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0answers
858 views

How to check vlan interface traffic on Cisco nexus 9k

I have Cisco N9K-C9396PX L3 switch which has VLAN interface configured for my LAN gateway and i want to monitor how much traffic vlanXXX handling, I have configured SNMP monitoring to pull interface ...
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0answers
763 views

Cisco Nexus 7k Mac move

I have been troubleshooting a mac move behaviour on my core network, which is made of 2 Nexus 7K with F3 series modules. They are inter-connected with a fabricpath mode port-channel. All the remote ...
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0answers
18 views

Upgrading Nexus 5548UP switches and physical reboot

We're planning to upgrade 5548UP to new version. Currently it's 6.0(2)N2(4). I know i need to to make three upgrade path steps to do it correctly: I see sometimes on upgrade process we're getting this ...
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0answers
54 views

Cisco CML 2.0 strange ASA trunking issue

I am seeing very strange issue and now i am losing my mind so thought ask you folk. I have following two components connected point to point on Cisco CML 2.0 [nxos-9000v]--------------------[ASAv] ...
0
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0answers
32 views

Data Center migration

We have two data centers in different locations and we want to transfer DC2 (secondary Data Center) from location Y to location X where X is DC1 (Primary) location. The connection between both data ...