Jerry Ye

Member Since: Aug 15, 2007

English
Jerry Ye commented on DCI and OTV in Other Data Center Subjects 2 years ago

Hi Boris,Bug, CSCtw82691 is already fixed in NX-OS 5.2(3a). I don't believe your issue is the same...

Jerry Ye commented on N55K - ISSU and Bridge Assurance in LAN, Switching and Routing 3 years ago

Due to vPC consistancy parameter mismatch:http://www.cisco.com/en/US/docs/switches/datacenter/...

Jerry Ye commented on N55K - ISSU and Bridge Assurance in LAN, Switching and Routing 3 years ago

Yes, it will affect the left side. If you use the command show vpc consistency-parameters...

Jerry Ye commented on N55K - ISSU and Bridge Assurance in LAN, Switching and Routing 3 years ago

Hi Qutub,The outage will last couple seconds and no way to avoid it. You can minimized it by...

Jerry Ye commented on N7K-VDC1K9 support question re: N7K-SUP2 in LAN, Switching and Routing 3 years ago

N7K-ADV1K9 is per chassis.Regards,jerry

Jerry Ye commented on N7K-VDC1K9 support question re: N7K-SUP2 in LAN, Switching and Routing 3 years ago

Do you have the Advanced Services Packages (N7K-ADV1K9)? This will give you 4+1 VDC day 1 (instead...

Jerry Ye commented on Fabric Path / Multidestination topology tree in Other Data Center Subjects 3 years ago

That is correct.Regards,jerry

Jerry Ye commented on DCNM & Nexus 7K VDC's in Other Data Center Subjects 3 years ago

According from my research, 1 license per chassis (not per VDC).HTH,jerry

Jerry Ye commented on DCNM & Nexus 7K VDC's in Other Data Center Subjects 3 years ago

Your license will not be able to manage VDCs on the N7K, you need LAN Enterprise which is not free:...

Jerry Ye commented on Fabric Path / Multidestination topology tree in Other Data Center Subjects 3 years ago

What traffic are you referring? Multidestination tree are used for multicast, broadcast and unknown...

Jerry Ye commented on SFP showing unknown on Nexus 7000! Plz help in LAN, Switching and Routing 3 years ago

Hi Leo,My customer called me every month for the same problem. =) Regards,jerry

Jerry Ye commented on VPC ISSUE in LAN, Switching and Routing 3 years ago

With the SVI we don't have a pure layer 2 environment. The SVI is rather equivalent to a layer 3...

Jerry Ye commented on SFP showing unknown on Nexus 7000! Plz help in LAN, Switching and Routing 3 years ago

Based from the following output:Ethernet6/31    sfp is present    type is 10Gbase-(unknown)     ...

Jerry Ye commented on OTV over 1500 MTU carrier DCI in Server Networking 3 years ago

Packets traverse the system as the following:Internal (physical, L2) -> Overlay (virtual) ->...

Jerry Ye commented on FEX Straight Thru to FEX vPC Migration is Disruptive? in Other Data Center Subjects 3 years ago

Your research is correct, It will be disruptive (~120-180 second) due to FEX reload.HTH,jerry

Jerry Ye commented on No "show ip cef" command in Nexus? in LAN, Switching and Routing 3 years ago

You need to find the route that you are looking for first, then attach to the module then use the...

Jerry Ye commented on Nexus 7000 process platform causes about 50% cpu load in LAN, Switching and Routing 3 years ago

Is that continueous spike or periodic spike? Periodic spike is normal, please see my previous post:...

Jerry Ye commented on OTV over 1500 MTU carrier DCI in Server Networking 3 years ago

You can lower your servers MTU to allow the additional OTV header. If you choose this route, 1400...

Jerry Ye commented on Disable openssl on Nexus 7010 in Server Networking 3 years ago

You can restrict access with ACL. Or turn off SSH completely. But you can't install any SSL version...

Jerry Ye commented on Nexus 7K vPC LACP vs Regular Port Channel in a VDC Design in LAN, Switching and Routing 3 years ago

"With the Mseries modules and LACP, vPC peer link supports 16 LACP port channel interfaces - 8...

Jerry Ye commented on Will a MTU mismatch in Nexus 7000 affect the performance ? in LAN, Switching and Routing 3 years ago

Yes, match your MTU end-to-end will resolve the performance issue.HTH,jerry

Jerry Ye commented on N5K vPC double failure behaviour in Server Networking 3 years ago

Hi Joan,If you read to again, it said it might work or might not work:"While not intuitive, if both...

Jerry Ye commented on Disruptive upgrade on Nexus 5K in Server Networking 3 years ago

Here is the reference link:http://www.cisco.com/en/US/prod/collateral/iosswrel/ps9494/ps9372/...

Jerry Ye commented on Disruptive upgrade on Nexus 5K in Server Networking 3 years ago

5.2(1)Nx(x) is the long term release. At some point, you might want to go with this release.HTH,...

Jerry Ye commented on Nexus-why we have to allow vPC vlans in vPC Peer link in LAN, Switching and Routing 3 years ago

If the VLAN is not allowed over the PL it is not considered a vPC VLAN.HTH,jerry

Jerry Ye commented on N5K vPC double failure behaviour in Server Networking 3 years ago

Taken the PL and PKL together will create a dual-active scenario and this is normal for traffic...

Jerry Ye commented on Multicasting on N5K & N7K in Server Networking 3 years ago

You can use any IP address, and I usually use an unused one to avoid confusion.You only need to...

Jerry Ye commented on Disruptive upgrade on Nexus 5K in Server Networking 3 years ago

WIthout FEX, it takes less than 300 seconds. With FEX, it will be take much longer. I usually will...

Jerry Ye commented on Nexus vPC domain generates a new vPC mac-address in LAN, Switching and Routing 3 years ago

It is generated from the vPC domain ID field.HTH,jerry

Jerry Ye commented on OTV carriage - IP Multicast WAN vs Point to Point WDM links in Server Networking 3 years ago

If ASR only support OTV multicast mode, then multicast is a requirement. I think...

Jerry Ye commented on OTV carriage - IP Multicast WAN vs Point to Point WDM links in Server Networking 3 years ago

You question can be summarized into your last point:Yes, you can use configure OTV over P2P link,...

Jerry Ye commented on Nexus 5500 VPC in Server Networking 3 years ago

It is a L2 switch without the L3 module. ECMP is L3.You can use 1 link for PL but it is not a best...

Jerry Ye commented on Nexus 5596UP Single Peer Link for vPC in Other Data Center Subjects 3 years ago

It will support static routes for inband management but it will not support L3 physical, so ECMP...

Jerry Ye commented on Nexus 5500 VPC in Server Networking 3 years ago

Please define "basic L3"???It supports static route for inband management but no inter-VLAN routing...

Jerry Ye commented on Nexus 5500 duplicate ICMP echo-replay in LAN, Switching and Routing 3 years ago

Who is your L3? Is that another Nexus? If yes, I am going to assume you have "peer-gateway", if yes...

Jerry Ye commented on Nexus 5500 VPC in Server Networking 3 years ago

Flooded unknown Unicast, STP BPDUs, Multicast, and data-traffic for  hosts that are single attached...

Jerry Ye commented on Port groups in NX7000 F2 48-port 1G/10G Ethernet module in regard to VDC? in Other Data Center Subjects 3 years ago

1) F2 has the same limitation. The port-group is grouped by the SoC. Meaning 1-4 is port-group 1, 5...

Jerry Ye commented on Nexus 5596UP Single Peer Link for vPC in Other Data Center Subjects 3 years ago

If peer-link failed, all vPC interfaces on the vPC secondary switch will be shutdown due the the...

Jerry Ye commented on Storage VDC in N7k in Other Data Center Subjects 3 years ago

1) N7K with F2 will only have FCoE supports with SUP2 (license requirement). If you have SUP1, your...

Jerry Ye commented on Nexus 7K with ASA5500 A/P and OSPF in Other Data Center Subjects 3 years ago

Peering with a vPC VLAN via any dynamic routing protocol is not supported.Please take a look at the...

Jerry Ye commented on vPC cluster problem to VSS cluster using Port-Channels in LAN, Switching and Routing 3 years ago

Spanning-tree port type nework will enable bridge assurance. It is bi-directional...

Jerry Ye commented on ISSU Upgrade on Nexus 5K in Other Data Center Subjects 3 years ago

Nothing change, same story. If L3 module exist, ISSU will not work. If you have L3 license...

Jerry Ye commented on ISSU Upgrade on Nexus 5K in Other Data Center Subjects 3 years ago

Yes, it will cause an outage. You need to correct the L3 licensing issue first. If the L3 module is...

Jerry Ye commented on Enhanced VPC doubt in Other Data Center Subjects 3 years ago

1) It is not EvPC in this set up. Just a regular vPC since the FEX is straight through.2) It is...

Jerry Ye commented on Double sided VPC/enhanced VPC and MST in Other Data Center Subjects 3 years ago

1) If you are using MST with single region, I don't see the point. It can be done with RPVST+...

Jerry Ye commented on Nexus 7K with ASA5500 A/P and OSPF in Other Data Center Subjects 3 years ago

Can you post the show ip ospf neighbor on your N5K and ASA environment?Regards,jerry

Jerry Ye commented on Nexus 7K with ASA5500 A/P and OSPF in Other Data Center Subjects 3 years ago

To answer your question why this setup is not working the following would happen:Link state routing...

Jerry Ye commented on N7K-F132XP-15 in Server Networking 3 years ago

No, L3 proxy means that L3 forwarding capacility will be shared between F series and M series. You...

Jerry Ye commented on Service-policy on Nexus 5K vlan interface in Other Data Center Subjects 3 years ago

This error said you need to adjust the hardware TCAM limits:http://www.cisco.com/en/US/docs/...

Jerry Ye commented on Nexus7k rebooted reason "Kernel Panic" in Server Networking 3 years ago

It would be anything. It might be a bug due to the fact that 5.1(2) is not a recommended version:...

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