About mmelbourne

mmelbourne · 02-29-2024

I have a situation where a SIP Trunk provider is stating they don't need any inbound ports open towards the SBC from their platform; all the communication is done via outbound connections from the SBC.I assume the SBC will make a SIP connection to th...

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 · 11-12-2022

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 · 02-16-2022

Thanks Scott. The reason for a mix is to facilitate a migration to an external DHCP server, but yes, after which it's not required.

mmelbourne · 07-12-2019

Thanks, I think was probably it, the connection tables were likely built (ICMP monitoring and UDP snmp/syslog traffic at the time of routing change).

mmelbourne · 07-12-2019

Different next-hops (different interfaces), and no PBR required, just want anything that's not in the 10.1.1.48/28 network to be routed out intf-1. This should be basic more-specific route wins.

Member Since	‎06-02-2002 08:50 AM
Date Last Visited	‎10-08-2024 03:50 AM
Posts	705
Total Helpful Votes Received	323

User Statistics

User Activity

SBC (CUBE) and Inbound Firewall Rules

Preventing ICMP Unreachable on ACL deny

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

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: WLC 8.5 and DHCP Proxy

Re: ASAs and more-specific static routes

Re: ASAs and more-specific static routes