Prashanth Krishnappa

Member Since: Dec 14, 2000

English
Prashanth Krishnappa commented on IBM V7000 with Nexus 5548UP and Nexus 4000 Design/implemetation guide in Storage Networking 3 years ago

ArnoldNexus 7000 does not support Native FC or FCIP. So you have native FC, you will need a storage...

Prashanth Krishnappa commented on Nexus 5596 VPC Non-ISSU Upgrade in Storage Networking 3 years ago

Hi MarcIts ok to NX-OS mismatch between the switches in the vPC domain. If your end systems are...

Prashanth Krishnappa commented on Nexus 5K <-> CheckPoint <-> 5K design question in Server Networking 3 years ago

Hi ThomasI do not understand your intended topology. Will you be connecting Active firewall to one...

Prashanth Krishnappa commented on Using SNMP to read flow control counters from Nexus 55xx in Server Networking 3 years ago

Hi EddyI just checked in a lab switch running latest 6.0(2)N1(1) and noticed that dot3PauseTable is...

Prashanth Krishnappa commented on Can the 5010 peer with 5548 for vpc ? in Server Networking 3 years ago

A Nexus 50x0 cannot be a vPC peer for Nexus 55xx due to different ways of VPC implementation...

Prashanth Krishnappa commented on Strange authentication event message on Nexus 5k in Server Networking 3 years ago

Check to see if there are a flood of failed logins into the switch. If there is such a condition...

Prashanth Krishnappa commented on Can not delete the ip igmp join-group command on NX2Ks. in Other Data Center Subjects 3 years ago

Hi SergioNew bugs take 48-72 hours to be visible on Cisco.comThanks-Prashanth

Prashanth Krishnappa commented on Can not delete the ip igmp join-group command on NX2Ks. in Other Data Center Subjects 3 years ago

Hello SergioI have filed a new bug CSCuc58233 for thisThanks-Prashanth

Prashanth Krishnappa commented on Can not delete the ip igmp join-group command on NX2Ks. in Other Data Center Subjects 3 years ago

Hello SergioFEX ports are meant to be L2 ports only and hence you should not be allowed to...

Prashanth Krishnappa commented on nexus 5548 vrf management in Server Networking 3 years ago

You cannot use an SVI in the mgmt vrf. However, you can use the mgmt0 interface for your vPC peer-...

Prashanth Krishnappa commented on Nexus 7K interface error disabled. Reason:DCX-No ACK in 100 PDUs in Server Networking 3 years ago

If your servers are not doing FCoE, they should not be sending out DCBX TLVs in LLDP frame. I have...

Prashanth Krishnappa commented on Nexus 7K interface error disabled. Reason:DCX-No ACK in 100 PDUs in Server Networking 3 years ago

What type of 10Gig adapter do you have on the server? I suspect its a FCoE capable CNA and could be...

Prashanth Krishnappa commented on Nexus 7000 NX-OS 6.1 Fex active active in Other Data Center Subjects 3 years ago

Dual homed FEX is not supported with Nexus 7000 at this time.

Prashanth Krishnappa commented on Nexus 5596 Ethernet Port Configuration in Server Networking 3 years ago

Hi MarkI suspect the interface in question is configured to be in a channel. Once an ethernet...

Prashanth Krishnappa commented on Ask the Expert: Troubleshooting Nexus 5000/2000 series switches in Other Data Center Subjects 3 years ago

Hi MarcThis event is closed but I will try to answer your question. You can make load-balancing...

Prashanth Krishnappa commented on Ask the Expert: Troubleshooting Nexus 5000/2000 series switches in Other Data Center Subjects 3 years ago

Hi SamuelThis event is closed. But I will try to answer it. I do see an option for use-acl in my...

Prashanth Krishnappa commented on Question on SPAN with Dual-Homed FEX in Other Data Center Subjects 3 years ago

Nexus 5020s will accept GLC-T but 1G ports are only supported in the first 16 ports of a 5020(and...

Prashanth Krishnappa commented on FI 6248 Nexus 5548 Port-channel problem in Storage Networking 3 years ago

Correct.. You should not see this problem once you install L3 module in the N5K-A and implement a...

Prashanth Krishnappa commented on FI 6248 Nexus 5548 Port-channel problem in Storage Networking 3 years ago

Do you use the 5548-L3 for any routing? Note that having asymetric routing in vPC pair of Nexus...

Prashanth Krishnappa commented on Fan warning on N5K after upgrading NX-OS from 5.0 to 5.1 or 5.2 in Server Networking 3 years ago

N55-PAC-750W-B power supply and N5548UP-FAN-B fan do work but you will have to replace the N5548UP-...

Prashanth Krishnappa commented on Assistance configuring FC Switching on Nexus 5548UP in Storage Networking 3 years ago

You will need to do "feature fcoe" for fc interfaces to show up

Prashanth Krishnappa commented on 3750 Username and Password Via SNMP in LAN, Switching and Routing 3 years ago

If you have read-write SNMP access to the switch, you can overwrite current running configuration...

Prashanth Krishnappa commented on HSRP not working on NEXUS 5548 in LAN, Switching and Routing 3 years ago

Worked offline with Christian.. He has L3 modules offline due to missing license and he will try...

Prashanth Krishnappa commented on Help ordering a Nexus 5548P without FC or FCoE in Storage Networking 3 years ago

You might want to go with the Unified port version(UP) instead of the P since it gives you an...

Prashanth Krishnappa commented on Nexus 5010 in Storage Networking 4 years ago

Yes.. You can do vPC without any license.If you are ordering new Nexus 5ks, you might want to look...

Prashanth Krishnappa commented on Unable to bring up link in Other Data Center Subjects 4 years ago

OK..  N7K-M132XP-12 is 10G only card

Prashanth Krishnappa commented on HSRP not working on NEXUS 5548 in LAN, Switching and Routing 4 years ago

Looks like HSRP multicast is not making it across. Does Po1 connect the two Nexus 5548s? Are you...

Prashanth Krishnappa commented on Unable to bring up link in Other Data Center Subjects 4 years ago

Looks like you have a 10G only capable interface. But you can do show interface ethernetx/y...

Prashanth Krishnappa commented on Load-balance on Nexus 2000 in Server Networking 4 years ago

The configuration applied on the Nexus 5k is applicable for the FEX as well.

Prashanth Krishnappa commented on SFP Fabric Extender Transceiver in Server Networking 4 years ago

The FET will work only between a Nexus 2000 and Nexus5k/7k. Hence you cannot use it to connect to a...

Prashanth Krishnappa commented on Nexus 5K adding vlans in Other Data Center Subjects 4 years ago

What Nexus OS are you running. If you are running 5.x you might want to think of using port-...

Prashanth Krishnappa commented on Nexus 5000 upgrade.. in Other Data Center Subjects 4 years ago

You can upgrade via telnet/ssh but if something goes wrong, you will be locked out and hence its...

Prashanth Krishnappa commented on Nexus 5596T part code in Other Data Center Subjects 4 years ago

The part number is N5K-C5596T-FA but it is not orderable yet.

Prashanth Krishnappa commented on Testing in Other Data Center Subjects 4 years ago

They cannot be stacked. vPC is the way to go with Nexus 5000 switches.

Prashanth Krishnappa commented on Tx pause frames on nexus 5548 in Server Networking 4 years ago

Flow control is enabled on by default on FEX and recommended to leave it on. I would not suspect...

Prashanth Krishnappa commented on Nexus 5548UP and LACP in Storage Networking 4 years ago

Inactive state usually indicates a missing VLAN in the VLAN database. Do you have VLAN 10 created...

Prashanth Krishnappa commented on Nexus 5K and ISSU in Other Data Center Subjects 4 years ago

The upgrade will be disruptive. However the upgrade process is still the same and you can use the "...

Prashanth Krishnappa commented on N5K-C5548UP-FA and N55-DL2 in Server Networking 4 years ago

Hello Hubert..You are correct.. N55-DL2 is default module unless you have a L3 moduleThanks-...

Prashanth Krishnappa commented on LUN masking and mapping in Nexus 5548up OS 5.1(3)N2(1) in Storage Networking 4 years ago

If you are looking for MDS like LUN zoning, Nexus 5000 does not support it. You will need to...

Prashanth Krishnappa commented on Is there any way to stop port from getting disabled because of “pauseRateLimitErrDisable”? in Storage Networking 4 years ago

Hello NiranjanI do not see an option just for pause-rate-limit. Can you try disabling it for all...

Prashanth Krishnappa commented on Nexus 5548: Tac-Pac asking for password in Server Networking 4 years ago

Hello DirkI see the problem in my lab switch as well and have filed a bug for it. The bug ID is...

Prashanth Krishnappa commented on Nexus 5000 vPC primary failover in Server Networking 4 years ago

Hello JessIf you have Layer 3 module in the Nexus 5548s, ISSU is not supported and hence upgrade...

Prashanth Krishnappa commented on transfer of storae licence Nexus 5500 in Storage Networking 4 years ago

You can rehost the license yourself on Cisco.com athttps://tools.cisco.com/SWIFT/LicensingUI/Home

Prashanth Krishnappa commented on Question about FCOE and IP, in Nexus 5596 in Other Data Center Subjects 4 years ago

Unified fabric is all about FC and classical ethernet/IP traffic on the same wire and it should...

Prashanth Krishnappa commented on Nexus 7000 FCoE between datacenters in Storage Networking 4 years ago

Curently 20KM is what has been tested and certified.

Prashanth Krishnappa commented on Nexus 7000 FCoE between datacenters in Storage Networking 4 years ago

I see Maximum lossless link distance 20KM

Prashanth Krishnappa commented on Nexus 7000 FCoE between datacenters in Storage Networking 4 years ago

http://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps9402/data_sheet_c78-605622.html...

Prashanth Krishnappa commented on Nexus 7000 FCoE between datacenters in Storage Networking 4 years ago

HelloCurrently max distance supported for lossless fabric is upto 20km with both F1/F2 cards.Thanks...

Prashanth Krishnappa commented on IBM V7000 with Nexus 5548UP and Nexus 4000 Design/implemetation guide in Storage Networking 4 years ago

In the Nexus 5000, you will be binding vFCs to the MAC addresses and you do not need NPIV for this.

Bio

Prashanth is an Escalation Engineer for Datacenter Switching at Cisco Systems, Inc RTP Technical Assistance Center(TAC). His current responsibilities include escalations in which he troubleshoots complex issues related to Cisco's Catalyst, Nexus and MDS product line; provide training, and author documentation. Prashanth joined Cisco Systems in 2000 as an engineer in the TAC. He received his Bachelor's degree in Electronics & Communication Engineering from Bangalore University, India and a Master's degree in Electrical Engineering from Wichita State University, Kansas. He is also a CCIE(#18057).










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