VIOS⚓︎

export EXTENDED_HISTORY=ON
export EDITOR=/usr/bin/vi
export HOST="$(/usr/bin/uname -n)"
export ENTSTAT_MODE=closed.error

alias aix="ioscli oem_setup_env"
alias history='fc -t'

if [ "$(whoami)" != "root" ]; then
  export PS1="[$(whoami)@${HOST}]$ "
else
  export PS1="[$(whoami)@${HOST}]# "
fi

set -o vi

#!/bin/ksh
#
# Name:
#       sea_portinfo.sh
#
# Description:
#       Tries to determine the physical switch name and port number by sniffing
#       CDP packets. Only works on Cisco switches and only if the port is configured to 
#       publish CDP packets.
#
# Usage:
#       Optional:
#                 -c : CSV output format.
#
# Requirements:
#       timeout - Comes as part of the coreutils RPM which can be installed with yum.
#
# Note:
#       This script isn't perfect. Sometimes the packet captured isn't always
#       the CDP one, so you may need to run it multiple times to get the switch details when
#       the real adapter is a link aggregation of multiple physical ports.

hostname=$(hostname -s | tr '[:upper:]' '[:lower:]')

# Arguments
while getopts "c" OPTION; do
    case ${OPTION} in
        c) CSVOUT="yes"
           ;;
        *) CSVOUT="no"
           ;;
    esac
done

if [[ ${CSVOUT} = "no" ]]; then
    printf '\n%s\n' "Sniffing Shared Ethernet Adapters (SEA) for switch details"
    printf '%s\n' "This may take up to 90 seconds per SEA..."
fi
# Iterate through all SEA's
for sea in $(lsdev -F 'name description' | awk '/Shared Ethernet Adapter/{ print $1 }'); do
    # Get SEA real adapter
    real_adapter=$(lsattr -E -a real_adapter -F value -l "${sea}")

    # If the real adapter is an EtherChannel, get a count of the number of aggregated interfaces
    if [ "$(lsdev -l "${real_adapter}" -F 'description')" = "EtherChannel / IEEE 802.3ad Link Aggregation" ]; then
        ent_count=$(lsattr -E -a adapter_names -F value -l "${real_adapter}" | awk -F ',' '{ print NF }')
    else
        ent_count=1
    fi

    # Bring SEA's en adapter up (if not already)
    sea_en_state=$(lsattr -E -a state -F value -l en"${sea#ent}")
    if [ "${sea_en_state}" != "up" ]; then
      chdev -a state=up -l en"${sea#ent}" > /dev/null 2>&1
    fi

    # Capture CDP packets from the SEA interface. If tcpdump is still running after 90 seconds, 
    # we may have hit a switch that either isn't Cisco, or the port doesn't have CDP enabled
    unset switchinfo
    set -A switchinfo $(/home/padmin/scripts/bin/timeout 90s tcpdump -i en"${sea#ent}" -s 1500 -c "${ent_count}" -v 'ether[20:2] = 0x2000' 2>&1 | grep -E '(Device-ID|Port-ID)' | awk -F ':' 'v && NR==n{ gsub(/ /, "", v); gsub(/ /, "", $3); print v","$3}/Device-ID/{ v=$3; n=NR+1 }')
    switchinfo=${switchinfo:-"NONE"}

    # If the SEA interface was down when we first checked, lets put it back in that state
    if [ "${sea_en_state}" = "down" ]; then
        chdev -a state=down -l en"${sea#ent}" > /dev/null 2>&1
        ifconfig en"${sea#ent}" down detach
    fi

    # Print values
    if [[ ${CSVOUT} = "yes" ]]; then
        if [ "${switchinfo}" = "NONE" ]; then
            printf '%s\n' "${hostname},Switch not Cisco, CDP not enabled, or CDP packet not seen in timeout duration."
        else
            printf '%s\n' "hostname,sea,real_adapter,switchname,switchport"
            count=0
            while [[ ${count} < ${#switchinfo[*]} ]]; do
                switchname=$(echo "${switchinfo[$count]}" | awk -F ',' '{gsub("\047", "", $1); print $1}')    # \047 is octal for a single quote
                switchport=$(echo "${switchinfo[$count]}" | awk -F ',' '{gsub("\047", "", $2); print $2}')    # \047 is octal for a single quote
                printf "%s\n" "${hostname},${sea},${real_adapter},${switchname},${switchport}"
                (( count+=1 ))
            done
        fi
    else
        if [ "${switchinfo}" = "NONE" ]; then
            printf '\n%s\n' "+-----------------------------------+"
            printf '%s\n' "SEA: ${sea}\n"
            printf '%s\n' "    -> Backing adapter: ${real_adapter}"
            printf '%s\n' "+-----------------------------------+"
            printf '%s\n' "Unable to determine switch details."
            printf '%s\n' "  Switch not Cisco, CDP not enabled, or CDP packet not seen in timeout duration."
        else
            count=0
            printf '\n%s\n' "+-----------------------------------+"
            printf '%s\n' "SEA: ${sea}"
            printf '%s\n' "    -> Backing adapter: ${real_adapter}"
            printf '%s\n' "+-----------------------------------+"
            printf '%-40s %s\n' "Switch" "Port"
            printf '%-40s %s\n' "------" "----"
            while [[ ${count} < ${#switchinfo[*]} ]]; do
                switchname=$(echo "${switchinfo[$count]}" | awk -F ',' '{gsub("\047", "", $1); print $1}')    # \047 is octal for a single quote
                switchport=$(echo "${switchinfo[$count]}" | awk -F ',' '{gsub("\047", "", $2); print $2}')    # \047 is octal for a single quote
                printf "%-40s %s\n" "${switchname}" "${switchport}"
                (( count+=1 ))
            done
        fi
    fi
done