Re: Nexus 5548 HSRP

pratik_193 · ‎09-20-2012

HI All,

We have got 2 5548 & had asked our support partners to configure the switches in Active/Active mode, when in am checking the HSRP details now, it is showing as Active on 1 5548 & Standby on the other. Is there some config mistake?

I want the config to work in ACTIVE/ACTIVE mode.

pasting the config output:-

Nexus 5548 1 :-

Interface Grp Prio P State Active addr Standby addr Group addr

Vlan10 10 254 Active local 172.29.8.4 172.29.8.2 (conf)

Vlan20 20 254 Active local 172.29.9.3 172.29.9.1 (conf)

Vlan30 30 254 Active local 172.29.12.3 172.29.12.1 (conf)

Vlan40 40 254 Active local 172.29.13.3 172.29.13.1 (conf)

Vlan50 50 254 Active local 172.29.13.131 172.29.13.129 (conf)

Vlan60 60 254 Active local 172.29.14.3 172.29.14.1 (conf)

Vlan70 70 254 Active local 172.29.10.3 172.29.10.1 (conf)

Vlan80 80 254 Active local 172.29.14.131 172.29.14.129 (conf)

Vlan90 90 254 Active local 172.29.15.131 172.29.15.129 (conf)

Vlan100 100 254 Active local 172.29.15.3 172.29.15.1 (conf)

Vlan110 110 254 Active local 172.29.15.195 172.29.15.193 (conf)

Vlan120 120 254 Standby 172.29.15.203 local 172.29.15.201 (conf)

Vlan130 130 254 Active local unknown 172.29.15.209 (conf)

Vlan140 140 254 Active local 172.29.92.3 172.29.92.1 (conf)

Vlan160 160 254 Active local 172.29.11.3 172.29.11.1 (conf)

Vlan170 170 254 Active local 172.29.9.131 172.29.9.129 (conf)

Vlan180 180 254 Active local 172.29.77.3 172.29.77.1 (conf)

Vlan190 190 254 Active local 172.29.78.3 172.29.78.1 (conf)

Vlan200 200 254 Active local 172.29.78.67 172.29.78.65 (conf)

Vlan210 210 254 Active local 172.29.82.3 172.29.82.1 (conf)

Vlan220 220 254 Active local 172.29.83.3 172.29.83.1 (conf)

Nexus 5548 2 :-

Interface Grp Prio P State Active addr Standby addr Group addr

Vlan10 10 244 Standby 172.29.8.3 local 172.29.8.2 (conf)

Vlan20 20 244 Standby 172.29.9.2 local 172.29.9.1 (conf)

Vlan30 30 244 Standby 172.29.12.2 local 172.29.12.1 (conf)

Vlan40 40 244 Standby 172.29.13.2 local 172.29.13.1 (conf)

Vlan50 50 244 Standby 172.29.13.130 local 172.29.13.129 (conf)

Vlan60 60 244 Standby 172.29.14.2 local 172.29.14.1 (conf)

Vlan70 70 244 Standby 172.29.10.2 local 172.29.10.1 (conf)

Vlan80 80 244 Standby 172.29.14.130 local 172.29.14.129 (conf)

Vlan90 90 244 Standby 172.29.15.130 local 172.29.15.129 (conf)

Vlan100 100 244 Standby 172.29.15.2 local 172.29.15.1 (conf)

Vlan110 110 244 Standby 172.29.15.194 local 172.29.15.193 (conf)

Vlan120 120 254 Active local 172.29.15.202 172.29.15.201 (conf)

Vlan130 30 244 Active local unknown 172.29.15.209 (conf)

Vlan140 140 244 Standby 172.29.92.2 local 172.29.92.1 (conf)

Vlan160 160 244 Standby 172.29.11.2 local 172.29.11.1 (conf)

Vlan170 170 244 Standby 172.29.9.130 local 172.29.9.129 (conf)

Vlan180 180 244 Standby 172.29.77.2 local 172.29.77.1 (conf)

Vlan190 190 244 Standby 172.29.78.2 local 172.29.78.1 (conf)

Vlan200 200 244 Standby 172.29.78.66 local 172.29.78.65 (conf)

Vlan210 210 244 Standby 172.29.82.2 local 172.29.82.1 (conf)

Vlan220 220 244 Standby 172.29.83.2 local 172.29.83.1 (conf)

rsimoni · ‎09-20-2012

Hi Pratik,

HSRP is a FHRP (First Hop Redundancy Protocol) and therefore it works in active/standby fashion.

So what you see is expected.

Check also http://en.wikipedia.org/wiki/First_Hop_Redundancy_Protocols

What you might want to know is that if your N5k's are configured with VPC's (with HSRP on) from a forwarding perspective both the active and standby switch will forward frames destined to the VIP - meaning that in fact HRSP with VPC works in active/active mode.

Riccardo

sbhadrav@cisco.com · ‎03-22-2018

The only restriction is that Dynamic Routing between External L3 Devices and vPC Peers over vPC or vPC VLANs is not supported.

further information in the Cisco Live virtual "BRKDCT-2951 - Deploying Nexus 7000 in Data Center Networks" presentation.