diff --git a/.jenkins.d/01-deps.sh b/.jenkins.d/01-deps.sh
index db2d808..d3709b5 100755
--- a/.jenkins.d/01-deps.sh
+++ b/.jenkins.d/01-deps.sh
@@ -7,19 +7,48 @@
 set -x
 
 if has OSX $NODE_LABELS; then
+    FORMULAE=(boost pkg-config libxml2)
+    if [[ -n $USE_OPENSSL_1_1 ]]; then
+        FORMULAE+=(openssl@1.1)
+    else
+        FORMULAE+=(openssl)
+    fi
+
     brew update
-    brew upgrade
-    brew install boost pkg-config cryptopp openssl
-    brew install libxml2
-    brew link --force libxml2
+    if [[ -n $TRAVIS ]]; then
+        # Travis images come with a large number of brew packages
+        # pre-installed, don't waste time upgrading all of them
+        for FORMULA in "${FORMULAE[@]}"; do
+            brew outdated $FORMULA || brew upgrade $FORMULA
+        done
+    else
+        brew upgrade
+    fi
+    brew install "${FORMULAE[@]}"
     brew cleanup
 fi
 
 if has Ubuntu $NODE_LABELS; then
     sudo apt-get -qq update
-    sudo apt-get -qq install build-essential pkg-config libboost-all-dev \
-                             libcrypto++-dev libsqlite3-dev libssl-dev
-    sudo apt-get install -qq -y python-setuptools python-dev python-pygraphviz python-kiwi
-    # sudo apt-get install -qq -y python-pygoocanvas python-gnome2
-    # sudo apt-get install -qq -y python-rsvg ipython
+    sudo apt-get -qy install build-essential pkg-config libboost-all-dev \
+                             libsqlite3-dev libssl-dev
+
+    if [[ $JOB_NAME == *"code-coverage" ]]; then
+        sudo apt-get -qy install gcovr lcov libgd-perl
+    fi
+fi
+
+if has Ubuntu-16.04 $NODE_LABELS; then
+    sudo apt-get -qy install python-setuptools python-dev python-pygraphviz castxml \
+                             python-kiwi python-gnome2 ipython libcairo2-dev python3-gi \
+                             libgirepository1.0-dev python-gi python-gi-cairo \
+                             gir1.2-gtk-3.0 gir1.2-goocanvas-2.0 python-pip
+    sudo pip install pygraphviz pycairo PyGObject pygccxml
+elif has Ubuntu $NODE_LABELS; then
+    sudo apt-get -qy install build-essential libsqlite3-dev libboost-all-dev libssl-dev \
+                             git python3-setuptools castxml \
+                             gir1.2-goocanvas-2.0 gir1.2-gtk-3.0 libgirepository1.0-dev \
+                             python3-dev python3-gi python3-gi-cairo \
+                             python3-pip python3-pygraphviz python3-pygccxml
+    sudo pip3 install kiwi
 fi
diff --git a/.jenkins.d/10-build.sh b/.jenkins.d/10-build.sh
index f0fb72e..58599ea 100755
--- a/.jenkins.d/10-build.sh
+++ b/.jenkins.d/10-build.sh
@@ -1,10 +1,11 @@
 #!/usr/bin/env bash
-set -x
 set -e
 
 JDIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
 source "$JDIR"/util.sh
 
+set -x
+
 pushd ns-3 >/dev/null
 
 git submodule update --init
@@ -13,15 +14,18 @@
 sudo rm -Rf build/ .waf-1* .waf3-1*
 find . -name '*.pyc' | sudo xargs rm -f
 
-# Configure/build in debug mode
 if has OSX $NODE_LABELS; then
     export PKG_CONFIG_PATH="$PKG_CONFIG_PATH:/usr/local/opt/libxml2/lib/pkgconfig"
+    if [[ -n $USE_OPENSSL_1_1 ]]; then
+        OPENSSL="--with-openssl=/usr/local/opt/openssl@1.1"
+    fi
 fi
-./waf -j${WAF_JOBS:-1} configure -d debug --enable-examples --enable-tests $EXTRA_FLAGS
+
+./waf -j${WAF_JOBS:-1} configure -d debug --enable-examples --enable-tests $OPENSSL
 ./waf -j${WAF_JOBS:-1} build
 
 # Install
-sudo ./waf -j${WAF_JOBS:-1} install
+sudo_preserve_env PATH -- ./waf -j${WAF_JOBS:-1} install
 
 if has Linux $NODE_LABELS; then
     sudo ldconfig
diff --git a/.jenkins.d/20-tests.sh b/.jenkins.d/20-tests.sh
index bf14236..bf0bfee 100755
--- a/.jenkins.d/20-tests.sh
+++ b/.jenkins.d/20-tests.sh
@@ -1,40 +1,19 @@
 #!/usr/bin/env bash
-set -x
+set -e
 
 JDIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
 source "$JDIR"/util.sh
 
-set -e
+set -x
 
 pushd ns-3 >/dev/null
 
-BOOST_VERSION=$(python -c "import sys; sys.path.append('build/c4che'); import _cache; v = _cache.BOOST_VERSION.split('_'); print int(v[0]) * 100000 + int(v[1]) * 100;")
-
-ut_log_args() {
-    if (( BOOST_VERSION >= 106200 )); then
-        echo --logger=HRF,test_suite,stdout:XML,all,build/xunit-${1:-report}.xml
-    else
-        if [[ -n $XUNIT ]]; then
-            echo --log_level=all $( (( BOOST_VERSION >= 106000 )) && echo -- ) \
-                 --log_format2=XML --log_sink2=build/xunit-${1:-report}.xml
-        else
-            echo --log_level=test_suite
-        fi
-    fi
-}
-
-ASAN_OPTIONS="color=always"
-ASAN_OPTIONS+=":detect_leaks=false"
-ASAN_OPTIONS+=":detect_stack_use_after_return=true"
-ASAN_OPTIONS+=":check_initialization_order=true"
-ASAN_OPTIONS+=":strict_init_order=true"
-ASAN_OPTIONS+=":detect_invalid_pointer_pairs=1"
-ASAN_OPTIONS+=":detect_container_overflow=false"
-ASAN_OPTIONS+=":strict_string_checks=true"
-ASAN_OPTIONS+=":strip_path_prefix=${PWD}/"
-export ASAN_OPTIONS
+export BOOST_TEST_BUILD_INFO=1
+export BOOST_TEST_COLOR_OUTPUT=1
+export BOOST_TEST_DETECT_MEMORY_LEAK=0
+export BOOST_TEST_LOGGER=HRF,test_suite,stdout:XML,all,build/xunit-log.xml
 
 # Run unit tests
-./waf --run "ndnSIM-unit-tests $(ut_log_args)"
+./waf --run "ndnSIM-unit-tests"
 
 popd >/dev/null
diff --git a/.jenkins.d/README.md b/.jenkins.d/README.md
new file mode 100644
index 0000000..7c78349
--- /dev/null
+++ b/.jenkins.d/README.md
@@ -0,0 +1,33 @@
+CONTINUOUS INTEGRATION SCRIPTS
+==============================
+
+Environment Variables Used in Build Scripts
+-------------------------------------------
+
+- `NODE_LABELS`: the variable defines a list of OS properties.  The set values are used by the
+  build scripts to select proper behavior for different OS.
+
+  The list should include at least `[OS_TYPE]`, `[DISTRO_TYPE]`, and `[DISTRO_VERSION]`.
+
+  Possible values for Linux:
+
+  * `[OS_TYPE]`: `Linux`
+  * `[DISTRO_TYPE]`: `Ubuntu`
+  * `[DISTRO_VERSION]`: `Ubuntu-16.04`, `Ubuntu-18.04`
+
+  Possible values for macOS:
+
+  * `[OS_TYPE]`: `OSX`
+  * `[DISTRO_TYPE]`: `OSX` (can be absent)
+  * `[DISTRO_VERSION]`: `OSX-10.12`, `OSX-10.13`, `OSX-10.14`
+
+- `JOB_NAME`: optional variable to define type of the job.  Depending on the defined job type,
+  the build scripts can perform different tasks.
+
+  Possible values:
+
+  * empty: default build process
+  * `code-coverage` (Ubuntu Linux is assumed): debug build with tests and code coverage analysis
+  * `limited-build`: only a single debug build with tests
+
+- `WAF_JOBS`: number of parallel build jobs used by waf, defaults to 1.
diff --git a/.jenkins.d/util.sh b/.jenkins.d/util.sh
index a89bc27..8ddc4ba 100755
--- a/.jenkins.d/util.sh
+++ b/.jenkins.d/util.sh
@@ -16,3 +16,22 @@
     set ${saved_xtrace}
     return ${ret}
 }
+
+sudo_preserve_env() {
+    local saved_xtrace
+    [[ $- == *x* ]] && saved_xtrace=-x || saved_xtrace=+x
+    set +x
+
+    local vars=()
+    while [[ $# -gt 0 ]]; do
+        local arg=$1
+        shift
+        case ${arg} in
+            --) break ;;
+            *)  vars+=("${arg}=${!arg}") ;;
+        esac
+    done
+
+    set ${saved_xtrace}
+    sudo env "${vars[@]}" "$@"
+}
diff --git a/.travis.yml b/.travis.yml
index 08e40e9..a49b5e8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,24 +1,89 @@
-sudo: required
-language: generic
+version: ~> 1.0
+language: cpp
+os: linux
+dist: bionic
+arch: amd64
+
 env:
-  global:
-    - WAF_JOBS=2
-matrix:
+  - COMPILER=g++-7
+  - COMPILER=g++-9
+  - COMPILER=clang++-6.0
+  - COMPILER=clang++-9
+
+jobs:
   include:
-    - os: linux
-      dist: xenial
-      env:
-        - CXX=g++
-        - NODE_LABELS="Linux Ubuntu Ubuntu-16.04"
+    # Linux
+    - env: COMPILER=g++-8
+    - env: COMPILER=clang++-5.0
+    - env: COMPILER=clang++-7
+    - env: COMPILER=clang++-8
+    - env: COMPILER=clang++-10
+    - env: COMPILER=clang++-11
+
+    # macOS
     - os: osx
-      osx_image: xcode10.1
-      env:
-        - CXX=clang++
-        - xcode10.1
-        - NODE_LABELS="OSX OSX_VERSION=10.13"
-notifications:
-  email:
-    on_success: always
-    on_failure: always
+      osx_image: xcode11.4
+      env: # default compiler
+
+  allow_failures:
+    - env: COMPILER=clang++-11
+
+  fast_finish: true
+
+before_install:
+  - |
+    : Adding apt repositories
+    case ${COMPILER} in
+      g++-9)
+        # https://launchpad.net/~ubuntu-toolchain-r/+archive/ubuntu/test/+packages
+        travis_retry sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
+        travis_retry sudo apt-get -qq update
+        ;;
+      clang++-1?)
+        # https://apt.llvm.org/
+        LLVM_REPO=${COMPILER/clang++/llvm-toolchain-${TRAVIS_DIST}}
+        travis_retry wget -nv -O - "https://apt.llvm.org/llvm-snapshot.gpg.key" | sudo apt-key add -
+        travis_retry sudo add-apt-repository -y "deb http://apt.llvm.org/${TRAVIS_DIST}/ ${LLVM_REPO%-11} main"
+        travis_retry sudo apt-get -qq update
+        ;;
+    esac
+
+install:
+  - |
+    : Installing C++ compiler
+    if [[ -n ${COMPILER} ]]; then
+      travis_retry sudo apt-get -qy install ${COMPILER/clang++/clang}
+    fi
+
+before_script:
+  - |
+    : Setting environment variables
+    if [[ -n ${COMPILER} ]]; then
+      export CXX=${COMPILER}
+    fi
+    case ${TRAVIS_OS_NAME} in
+      linux)  export NODE_LABELS="Linux Ubuntu Ubuntu-18.04" ;;
+      osx)    export NODE_LABELS="OSX OSX-$(sw_vers -productVersion | cut -d . -f -2)" ;;
+    esac
+    export JOB_NAME=limited-build
+    export WAF_JOBS=2
+  - |
+    : Enabling workarounds
+    case "${TRAVIS_CPU_ARCH},${COMPILER}" in
+      arm64,g++*)
+        # Avoid exceeding the per-job time limit
+        export DISABLE_HEADERS_CHECK=yes
+        ;;
+      ppc64le,g++-7)
+        # AddressSanitizer does not seem to be working
+        export DISABLE_ASAN=yes
+        ;;
+      *,clang++-8)
+        # https://bugs.llvm.org/show_bug.cgi?id=40808
+        export DISABLE_ASAN=yes
+        ;;
+    esac
+  - ${CXX:-c++} --version
+
 script:
   - ./.jenkins
diff --git a/VERSION b/VERSION
deleted file mode 100644
index 227cea2..0000000
--- a/VERSION
+++ /dev/null
@@ -1 +0,0 @@
-2.0.0
diff --git a/docs/source/RELEASE_NOTES.rst b/docs/source/RELEASE_NOTES.rst
index 4e2187d..bd0b38e 100644
--- a/docs/source/RELEASE_NOTES.rst
+++ b/docs/source/RELEASE_NOTES.rst
@@ -5,6 +5,32 @@
 
 All of the ndnSIM documentation is accessible from the `ndnSIM website <https://ndnsim.net>`__.
 
+Release 2.8
+-----------
+
+- The submodules of NFD and ndn-cxx have been upgraded to version 0.7.0.
+
+  `NFD 0.7.0 release notes <https://named-data.net/doc/NFD/0.7.0/RELEASE_NOTES.html>`__
+
+  `ndn-cxx 0.7.0 release notes <https://named-data.net/doc/ndn-cxx/0.7.0/RELEASE_NOTES.html>`__
+
+    .. note::
+       In order to retrieve the marked versions of ndn-cxx and NFD, use
+       ``--recursive`` option to the git clone command or run ``git
+       submodule update --init`` after clone, pull, or merge.
+
+- With the underlying NFD/ndn-cxx upgrade, ndnSIM now operates with NDN Packet format version 0.3.
+
+- Base NS-3 was rebased to version 3.30.1
+
+- Add Loop-Free In-port Dependent (LFID) route calculation that provides a set of
+  loop-free paths (:issue:`4985`)
+
+- Fix wrong behaviour of default Size in ConsumerWindow
+
+- **Remove** legacy content store implementation. Use content store replacement/placement
+  policies implemented using NFD routines.
+
 Release 2.7
 -----------
 
diff --git a/docs/source/_templates/indexcontent.html b/docs/source/_templates/indexcontent.html
index 71289dd..c5810a1 100644
--- a/docs/source/_templates/indexcontent.html
+++ b/docs/source/_templates/indexcontent.html
@@ -59,8 +59,9 @@
       <td width="50%" valign="top">
         <h2>ndnSIM Versions</h2>
         <div class="tile">
-          <p class="biglink"><a class="biglink" href="#">ndnSIM 2.7</a><br/>
-            <span class="linkdescr">latest version</span></p>
+          <p class="biglink"><a class="biglink" href="#">ndnSIM 2.8</a><br/>
+              <span class="linkdescr">the latest version</span></p>
+          <p class="biglink"><a class="biglink" href="https://ndnsim.net/2.7/">ndnSIM 2.7</a><br/>
           <p class="biglink"><a class="biglink" href="https://ndnsim.net/2.6/">ndnSIM 2.6</a><br/>
           <p class="biglink"><a class="biglink" href="https://ndnsim.net/2.5/">ndnSIM 2.5</a><br/>
           <p class="biglink"><a class="biglink" href="https://ndnsim.net/2.4/">ndnSIM 2.4</a><br/>
diff --git a/docs/source/getting-started.rst b/docs/source/getting-started.rst
index 1749051..b1a42ff 100644
--- a/docs/source/getting-started.rst
+++ b/docs/source/getting-started.rst
@@ -9,9 +9,9 @@
 
 ndnSIM 2.x has been successfully compiled and used on following platforms:
 
+- Ubuntu Linux 20.04
 - Ubuntu Linux 18.04
-- Ubuntu Linux 16.04
-- macOS 10.13
+- macOS 10.15
 - macOS 10.14
 
 .. _requirements:
@@ -21,7 +21,7 @@
 
 **1. Core dependencies**
 
--  ``python`` >= 2.7
+-  ``python`` >= 3.5
 -  ``libsqlite3``
 -  ``pkg-config``
 -  ``openssl``
@@ -50,12 +50,18 @@
 
 - Linux
 
-  * Ubuntu Linux
+  * Ubuntu Linux 18.04
 
    .. code-block:: bash
 
        sudo apt install build-essential libsqlite3-dev libboost-all-dev libssl-dev git python-setuptools castxml
 
+  * Ubuntu Linux 20.04
+
+   .. code-block:: bash
+
+       sudo apt install build-essential libsqlite3-dev libboost-all-dev libssl-dev git python3-setuptools castxml
+
   * Fedora Linux
 
    .. code-block:: bash
@@ -87,13 +93,18 @@
 
 - Linux
 
-  * Ubuntu Linux
+  * Ubuntu Linux 18.04
 
     .. code-block:: bash
 
         sudo apt install python-dev python-pygraphviz python-kiwi python-gnome2 ipython libcairo2-dev python3-gi libgirepository1.0-dev python-gi python-gi-cairo gir1.2-gtk-3.0 gir1.2-goocanvas-2.0 python-pip
         sudo pip install pygraphviz pycairo PyGObject pygccxml
 
+  * Ubuntu Linux 20.04
+
+        sudo apt install gir1.2-goocanvas-2.0 gir1.2-gtk-3.0 libgirepository1.0-dev python3-dev python3-gi python3-gi-cairo python3-pip python3-pygraphviz python3-pygccxml
+        sudo pip3 install kiwi
+
 .. _visualizer: https://www.nsnam.org/wiki/PyViz
 
 Downloading ndnSIM source
@@ -148,16 +159,6 @@
    ./waf configure --enable-examples
    ./waf
 
-On macOS (with MacPorts), you may need to modify the configure command to use MacPorts
-version of python:
-
-.. code-block:: bash
-
-   cd <ns-3-folder>
-   ./waf configure --with-python=/opt/local/bin/python2.7 --enable-examples
-   # or run ``sudo port select python python27``
-   ./waf
-
 .. note::
    On macOS configuration stage may get :ref:`stuck at detecting gtk module <Problems with
    the gtk python module on macOS>`.  Make sure you have `XQuartz