About mmelbourne

mmelbourne · 05-23-2023

By default, IOS-XR will send an ICMP unreachable message when a packet hits an ACL deny entry. Is there any way to disable this apart from the per-interface ("ipv4 unreachables disable") which has the potential to also break PMTUD.The issue is a peer...

mmelbourne · 03-03-2023

We have a NCS-5504 with NCSNC57-36H6D-S line card.We wish to use a 40G optic in one of the ports to provide 4x10G breakout.From the module notes:https://www.cisco.com/c/en/us/products/collateral/routers/network-convergence-system-5500-series/datashee...

mmelbourne · 11-25-2022

Hi,Is it possible to leverage EVPN Multisite where a vPC Border Gateway is connected to a "Classic" L2-segment only (i.e. no site-internal VTEPs)? I configured this and actually see Multisite in a non-operational state because of Fabric isolation (th...

mmelbourne · 11-12-2022

Hi,I have a situation where "ibgp policy out enforce-modifications" is enabled globally to allow the next-hop to be changed for for prefixes towards specific iBGP peers.However, a different neighbor-group is used for basic route-reflection which is c...

mmelbourne · 02-16-2022

Hi, I am running WLC 8.5.182.0, and for most small VLANs we are using the Internal DHCP Server which is adequate, but not ideal. For a larger VLAN, it appears to be possible to set "DHCP Proxy Mode" to 'Disable' on a per-interface (VLAN) basis, and t...

mmelbourne · 03-07-2023

Thanks for the pointers. I think the commands are very hardware-specific, even down to the specific ports.Looking at: https://www.cisco.com/c/en/us/td/docs/iosxr/ncs5500/hardware-install/b-ncs5500-hardware-installation-guide/b-ncs5500-hardware-instal...

mmelbourne · 03-06-2023

Thanks for the pointer. It's slightly confusing having a 57-series line card in a NCS5504 chassis. Which command is actually required? I am thinking it's the "hw-module port-range <>" as interfaces need to be renamed?Is there any specific documentati...

mmelbourne · 11-30-2022

I've build this using 9.3(8) in a virtual lab; the A-side of one vPC pair is attached the other site and the other site are configured similarly. IPs are:10.<site>.0.254 A-side RID (BGP)10.<site>.0.253 B-side RID (BGP)10.<site>.0.252 A-side PIP10.<si...

mmelbourne · 11-27-2022

What's interesting, is in the documentation:https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/93x/vxlan/configuration/guide/b-cisco-nexus-9000-series-nx-os-vxlan-configuration-guide-93x/b-cisco-nexus-9000-series-nx-os-vxlan-confi...

mmelbourne · 11-27-2022

Hi Sergiu,That is pretty much the design as it stands; migrating from a Legacy site to a Fabric-enabled site, and I agree that the documentation suggests EVPN Multi-Site should work in this way. Here, were are migrating away from the Legacy site, so ...

Member Since	‎06-02-2002 08:50 AM
Date Last Visited	‎05-30-2023 02:03 AM
Posts	704
Total Helpful Votes Received	323

User Statistics

User Activity

Preventing ICMP Unreachable on ACL deny

NCS-5504 with NCSNC57-36H6D-S and 4x10G Optics

EVPN Multisite and Classic Ethernet

IOS XR and next-hop-self with "ibgp policy out enforce-modifications"

WLC 8.5 and DHCP Proxy

Re: NCS-5504 with NCSNC57-36H6D-S and 4x10G Optics

Re: NCS-5504 with NCSNC57-36H6D-S and 4x10G Optics

Re: EVPN Multisite and Classic Ethernet

Re: EVPN Multisite and Classic Ethernet

Re: EVPN Multisite and Classic Ethernet