diff --git a/perl-xCAT/xCAT/DHCP/BootPolicy.pm b/perl-xCAT/xCAT/DHCP/BootPolicy.pm
index 204322f31..bf47dbb4f 100644
--- a/perl-xCAT/xCAT/DHCP/BootPolicy.pm
+++ b/perl-xCAT/xCAT/DHCP/BootPolicy.pm
@@ -2,6 +2,7 @@ package xCAT::DHCP::BootPolicy;
 
 use strict;
 use warnings;
+use xCAT::HTTPUtils qw(httpport_suffix);
 
 sub kea_client_classes {
     my ( $class, %opts ) = @_;
@@ -166,7 +167,7 @@ sub kea_httpboot_network_classes {
     return [] unless $opts{net} && defined( $opts{prefix} ) && $opts{next_server};
 
     my $httpport   = $opts{httpport} || '80';
-    my $portsuffix = ( $httpport eq '80' ) ? '' : ":$httpport";
+    my $portsuffix = httpport_suffix($httpport);
     my $tftpdir    = $opts{tftpdir} || '/tftpboot';
     $tftpdir =~ s{/+$}{};
     my $http_tftp_root = '/tftpboot';
@@ -233,7 +234,7 @@ sub kea_onie_network_classes {
     return [] unless $opts{net} && defined( $opts{prefix} ) && $opts{next_server};
 
     my $httpport   = $opts{httpport} || '80';
-    my $portsuffix = ( $httpport eq '80' ) ? '' : ":$httpport";
+    my $portsuffix = httpport_suffix($httpport);
     my $name = "xcat-onie-$opts{net}_$opts{prefix}";
     $name =~ s{[^A-Za-z0-9_.-]}{_}gxms;
 
@@ -460,7 +461,7 @@ sub kea_xnba_node_classes {
 
         next unless $node->{next_server};
         my $httpport = $node->{httpport} || '80';
-        my $portsuffix = ( $httpport eq '80' ) ? '' : ":$httpport";
+        my $portsuffix = httpport_suffix($httpport);
         my $base_url = 'http://' . $node->{next_server} . $portsuffix . "/tftpboot/$loader->{scripts}/nodes/" . $node->{node};
 
         push @classes, {
@@ -713,7 +714,7 @@ sub kea_xnba_network_classes {
     my $loader = $class->x86_loader( method => 'ipxe' );
     my $uefi_x64_arch_match = uefi_x64_client_architecture_match_expr();
     my $httpport = $opts{httpport} || '80';
-    my $portsuffix = ( $httpport eq '80' ) ? '' : ":$httpport";
+    my $portsuffix = httpport_suffix($httpport);
     my $network_id = $opts{net} . '_' . $opts{prefix};
     my $safe_network = $network_id;
     $safe_network =~ s/[^A-Za-z0-9_.-]/_/g;
diff --git a/perl-xCAT/xCAT/HTTPUtils.pm b/perl-xCAT/xCAT/HTTPUtils.pm
new file mode 100644
index 000000000..ef8d32355
--- /dev/null
+++ b/perl-xCAT/xCAT/HTTPUtils.pm
@@ -0,0 +1,16 @@
+# IBM(c) 2026 EPL license http://www.eclipse.org/legal/epl-v10.html
+package xCAT::HTTPUtils;
+
+use strict;
+use warnings;
+use Exporter qw(import);
+
+our @EXPORT_OK = qw(httpport_suffix);
+
+# Callers choose the default port before formatting it.
+sub httpport_suffix {
+    my $port = shift // '';
+    return $port eq '80' ? '' : ":$port";
+}
+
+1;
diff --git a/xCAT-server/lib/perl/xCAT/Template.pm b/xCAT-server/lib/perl/xCAT/Template.pm
index 681f8b298..a0aef54fa 100644
--- a/xCAT-server/lib/perl/xCAT/Template.pm
+++ b/xCAT-server/lib/perl/xCAT/Template.pm
@@ -13,6 +13,7 @@ use File::Path;
 use Sys::Syslog;
 use xCAT::ADUtils;    #to allow setting of one-time machine passwords
 use xCAT::Utils;
+use xCAT::HTTPUtils ();
 use xCAT::TableUtils;
 use xCAT::NetworkUtils;
 use xCAT::PasswordUtils;
@@ -50,8 +51,7 @@ my %tab_replacement = (
 sub httpport_suffix {
     my $httpport = shift;
     $httpport = "80" unless defined $httpport and length $httpport;
-    return "" if $httpport eq "80";
-    return ":$httpport";
+    return xCAT::HTTPUtils::httpport_suffix($httpport);
 }
 
 sub subvars {
diff --git a/xCAT-server/lib/xcat/plugins/dhcp.pm b/xCAT-server/lib/xcat/plugins/dhcp.pm
index 367b6bb21..5ab5d04a4 100644
--- a/xCAT-server/lib/xcat/plugins/dhcp.pm
+++ b/xCAT-server/lib/xcat/plugins/dhcp.pm
@@ -31,6 +31,7 @@ my $candoipv6 = eval {
 use Sys::Syslog;
 use IPC::Open2;
 use xCAT::Utils;
+use xCAT::HTTPUtils qw(httpport_suffix);
 use xCAT::SvrUtils;
 use xCAT::DHCP::BootPolicy;
 use xCAT::DHCP::Backend;
@@ -1092,7 +1093,7 @@ sub addnode
      if ($hports[0]){
          $httpport=$hports[0];
      }
-    my $portsuffix = ( $httpport eq "80" ) ? "" : ":$httpport";
+    my $portsuffix = httpport_suffix($httpport);
 
     if ($chainents and $chainents->{$node}) {
         $chainent = $chainents->{$node}->[0];
@@ -2927,7 +2928,7 @@ sub kea_build_dhcp4_intent
     if ($hports[0]) {
         $httpport = $hports[0];
     }
-    my $portsuffix = ( $httpport eq "80" ) ? "" : ":$httpport";
+    my $portsuffix = httpport_suffix($httpport);
 
     my $nettab = xCAT::Table->new("networks");
     return { error => "Unable to open networks table, please run makenetworks" } unless $nettab;
@@ -3515,7 +3516,7 @@ sub kea_command_path
 sub kea_subnet4_intent
 {
     my ( $nettab, $net, $mask, $interface, $remote, $id, $httpport ) = @_;
-    my $portsuffix = ( $httpport eq "80" ) ? "" : ":$httpport";
+    my $portsuffix = httpport_suffix($httpport);
 
     my @myipd = xCAT::NetworkUtils->my_ip_facing($net);
     my $myip;
@@ -3636,7 +3637,7 @@ sub kea_subnet4_intent
 sub kea_opal_client_class
 {
     my ( $net, $prefix, $tftp, $httpport ) = @_;
-    my $portsuffix = ( $httpport eq "80" ) ? "" : ":$httpport";
+    my $portsuffix = httpport_suffix($httpport);
 
     return unless $net && defined($prefix) && $tftp;
 
@@ -4381,7 +4382,7 @@ sub kea_boot_for_node
     if ($hports[0]) {
         $httpport = $hports[0];
     }
-    my $portsuffix = ( $httpport eq "80" ) ? "" : ":$httpport";
+    my $portsuffix = httpport_suffix($httpport);
 
     my %boot = ( 'option-data' => [] );
     my $netboot = $nrent ? $nrent->{netboot} : undef;
@@ -4429,7 +4430,7 @@ sub kea_boot_for_node
 sub kea_onie_url_for_node
 {
     my ( $node, $ntent, $nxtsrv, $httpport ) = @_;
-    my $portsuffix = ( $httpport eq "80" ) ? "" : ":$httpport";
+    my $portsuffix = httpport_suffix($httpport);
 
     return unless $nxtsrv;
     my $provmethod = $ntent ? $ntent->{provmethod} : undef;
@@ -4830,7 +4831,7 @@ sub addnet
      if ($hports[0]){
          $httpport=$hports[0];
      }
-    my $portsuffix = ( $httpport eq "80" ) ? "" : ":$httpport";
+    my $portsuffix = httpport_suffix($httpport);
     my $firstoctet = $net;
     $firstoctet =~ s/^(\d+)\..*/$1/;
     if ($net eq "169.254.0.0" or ($firstoctet >= 224 and $firstoctet <= 239)) {
diff --git a/xCAT-server/lib/xcat/plugins/mknb.pm b/xCAT-server/lib/xcat/plugins/mknb.pm
index 38b75d1f2..d10e4a711 100644
--- a/xCAT-server/lib/xcat/plugins/mknb.pm
+++ b/xCAT-server/lib/xcat/plugins/mknb.pm
@@ -3,6 +3,7 @@ use strict;
 use Digest::SHA ();
 use File::Temp qw(tempdir tempfile);
 use xCAT::Utils;
+use xCAT::HTTPUtils qw(httpport_suffix);
 use xCAT::TableUtils;
 use xCAT::NodeRange;
 use File::Path;
@@ -434,7 +435,7 @@ sub process_request {
     if ($hports[0]){
         $httpport=$hports[0];
     }
-    my $portsuffix = ( $httpport eq "80" ) ? "" : ":$httpport";
+    my $portsuffix = httpport_suffix($httpport);
 
     @entries = xCAT::TableUtils->get_site_attribute("dhcpinterfaces");
     $t_entry = $entries[0];
@@ -1075,7 +1076,7 @@ sub _write_grub2_discovery_config {
     # loads it over HTTP like netboot=grub2-http; the TFTP entry is for a management
     # node that does not serve the TFTP root over HTTP.
     my $httpport = $args{httpport} || '80';
-    my $httproot = 'http,' . $args{xcatd_address} . ($httpport eq '80' ? '' : ":$httpport");
+    my $httproot = 'http,' . $args{xcatd_address} . httpport_suffix($httpport);
     my $http_tftp_root = '/tftpboot';
     my $tftproot = 'tftp,' . $args{xcatd_address};
     my $content = "# xCAT Genesis discovery for network $hexnet - generated by mknb, do not edit\n";
diff --git a/xCAT-server/lib/xcat/plugins/xnba.pm b/xCAT-server/lib/xcat/plugins/xnba.pm
index 96e4ac21a..86371ed74 100644
--- a/xCAT-server/lib/xcat/plugins/xnba.pm
+++ b/xCAT-server/lib/xcat/plugins/xnba.pm
@@ -9,6 +9,7 @@ use xCAT::Scope;
 use xCAT::MsgUtils;
 use Getopt::Long;
 use xCAT::Utils;
+use xCAT::HTTPUtils qw(httpport_suffix);
 require xCAT::BootUtils;
 use xCAT::TableUtils;
 use xCAT::ServiceNodeUtils;
@@ -164,7 +165,7 @@ sub setstate {
      if ($hports[0]){
          $httpport=$hports[0];
      }
-    my $portsuffix = ( $httpport eq "80" ) ? "" : ":$httpport";
+    my $portsuffix = httpport_suffix($httpport);
 
     # get kernel and initrd from boottarget table
     my $bttab;